Showing newest posts with label tutorial. Show older posts
Showing newest posts with label tutorial. Show older posts

25 June 2010 | Post a Comment

Elegant Desktop ToDo List

A lot of people have been asking me about the Desktop ToDo list that appears in my last screencast. So, here's the scoop on this simple and elegant ToDo list system, which can be easily synchronized across multiple (Mac) computers.




Here's what you need to set this stuff up.

Mac OS X. I don't know of any good windows analogues for Quicksilver and Geektool. Let us know if you do!

Geektool. This beautiful little app is available for free from Tynsoe.org. For more on what it can do, try this tutorial. For our purposes, here's how to display a TXT file on your Desktop:
  • Create a new Shell geeklet in the Geektool preference pane
  • Enter the command: cat PathToYourList/YourList.txt
  • To synchronize multiple computers, make sure the file is in a Dropbox folder.
Quicksilver. This is why I own a mac. It's free from Blacktree.com. If you're new to it, try this beginner's guide. To set up the 'Append' and 'Completed' functions seen in the screencast:
  • On the Quicksilver > Plugins page, add the 'Text Manipulation Actions' plugin. Then make sure 'Append' box is checked on the Preferences > Actions page.
  • Now you can append text to any .TXT file -- but only files with that extension.
  • Download the Completed script.
  • Open it with ScriptEditor and set the path to your Completed.txt file.
  • Add the Completed.scpt script to the folder YourUsername/Library/Application Support/Quicksilver/Actions. Create this folder if it doesn't exist yet.
And that's it! As always, be sure to leave your thoughts, ideas or improvements in the comments below.


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08 March 2010 | Post a Comment

Keep your caffeine tank at its optimum level

Keeping your caffeine tank full is an essential part of history, philosophy and physics. Follow this easy chart to keep your caffeine intake at its optimum level. (Data from Wisebread.com.)


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10 February 2010 | Post a Comment

Get Started Reading Recent Classics on the Philosophy of Physics

Which philosophy of physics books are relatively recent (say, post-1980), but still clear classics that every graduate student in the field should at least paw through? Here's a preliminary list, ordered alphabetically.
  • Albert, David: QM & Experience
  • Albert, David: Time & Chance
  • Barrett, Jeff: QM of minds & worlds
  • Bell, John: Speakable & Unspeakable in QM
  • Bub, Jeff: Interpreting the Quantum World
  • Cartwright, Nancy: How the Laws of Physics Lie
  • Earman, John: Bangs, Crunches, Whimpers & Shrieks
  • Earman, John: Primer on Determinism
  • Earman, John: World Enough & Spacetime
  • Fine, Arthur: The Shaky Game
  • Friedman, Michael: Foundations of Spacetime Theories
  • Hughes, RIG: Structure & Interpretation of QM
  • Maudlin, Tim: Metaphysics Within Physics
  • Maudlin, Tim: Quantum Non-locality & Relativity
  • Penrose, Roger: The Emperor's New Mind
  • Price, Hugh: Time's Arrow & Archimedes' Point*
  • Redhead, Michael: Incompleteness, Non-locality & Realism
  • Redhead, Michael: From Physics to Metaphysics
  • Sklar, Lawrence: Philosophy of Physics*
  • Sklar, Lawrence: Physics & Chance*
  • Teller, Paul: Interpretive Introduction to QFT
  • van Fraassen, Bas: QM An Empiricist View
Also, some classic unpublished texts:
Also, quickly becoming classics:
  • Brown, Harvey: Physical Relativity
  • Healey, Richard: Gauging What's Real
  • Lange, Marc: Introduction to the Philosophy of Physics
  • Monographs contained in the Handbook of Philosophy of Physics, Earman & Butterfield (eds)
One important book on the list, John Earman's (1986) Primer on Determinism, has unfortunately reached "rare" status, and is fairly difficult get ahold of for less than $200. Nevertheless, let it be known that an electronic copy of this book does is circulating on the inter-tubes. If you look around a bit, you'll likely be able to find and download a copy for free. Just throwing that out there.

See also my advice about reading on the cheap, and about learning GR online. This list was inspired by a recent post over at It's Only a Theory -- further suggestions are more than welcome. Happy reading!

(*) Added Feb. 11 - Thanks commenters!

    31 December 2009 | Post a Comment

    Get Started Handling Academic Citations Like a Pro

    Using a Mac to do your academic work? Here's a brief tutorial on how to optimize your day-to-day dealings with academic citations, by integrating Bibdesk, Textmate, Quicksilver and Scholar. Below, you'll find instructions on how to set up all these neat little tricks.


    Quicksilver Web Search. After you download Quicksilver (free) and open the preferences window, go to Plug-ins > All Plug-ins, and check the box next to "Web Search Module." Restart Quicksilver. Go to Catalog, click the "+" at the bottom-left, and select "Web Search List." A new pane should appear (if not, click the little i), in which you can add any number of web-search shortcuts by clicking the other "+" appearing above "Source Options" on the new pane. Just go to any search box (such as Google Scholar) and search for "***", and copy resulting page's URL. Paste it in the web-search shortcut you just created in Quicksilver under "URL." Under "Name," write something useful like "GoogleScholar." Finally, rescan your catalog by clicking the circular-arrow in the bottom right. That's it! To search for stuff, just invoke Quicksilver, hit "." (period) to enter text, hit Tab, start typing "Find with", hit Tab again, and start typing "GoogleScholar."

    Even more useful -- if you want to use a secure remote access service (like VPN) to search for articles from home, just log into VPN before going searching for "***" in Google Scholar. When you first search for something, you'll have to enter your username and password. But in every search after that, you'll have your regular access to secure articles.

    Bibtex Records on Google Scholar. You won't see these unless you actually set them up. Log into your Google account, go to Google Scholar, and click the "Scholar Preferences" link next to the search box. Click the dial that says, "Show links to import citations" and select "BibTex" from the drop-down menu. Now you'll see that useful BibTex link below all your search results.

    Bibdesk. You can download this beautiful little app for free from Sourceforge. If you copy a bibtex citation record to the clipboard, you can add it automatically to Bibdesk by typing Command-Option-L.

    Textmate Drop-down Menu. Make sure you've installed Textmate (trial available from Macromates) and Bidesk. To set up that neat little drop-down menu in Textmate, first download and unzip the "Completion.zip" package (available here or here). Second, double-click each of the .tmComand files. Next, copy the binary file "BibDeskTMCompletions" somewhere convenient, like a folder called "bin" in your home directory. Finally, open Textmate and go to Bundles > Bundle Editor > Show Bundle Editor. Click the newly-added bundle, "Build Cite With BibDesk." Find the line that begins "CMD = '"$HOME"...," and set it to the path of your binary file. If you chose the "bin" folder in your home directory, just change this line to the following:

    CMD = '"$HOME"/bin/BibDeskTMCompletions

    Do the same thing in the bundle, "Bibdesk DO Completion." While still in this second bundle, set a useful Activation key, such as the Tab-Trigger "cite". Close the editor and restart Textmate. Now, to make the drop-down menu work, you just need to open a Latex document with a bibliography set at the end -- for example, mine reads \bibliography{~/Documents/MasterBibliography.bib}. Now, whenever you type "cite" followed by the Tab key, you'll get a drop-down menu displaying all the references in you .bib-file.



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    30 June 2009 | Post a Comment

    Get Started Teaching Philosophy

    Ok, you're teaching philosophy. You know what you want to teach. But how do you achieve your goals? The simple answer, I think, is through strategy. Practically, teaching philosophy is just like making widgets or waging war: it can be analyzed and optimized. Moreover, teaching philosophy can benefit from the basic principles of good strateg.

    So, I adapted a few principles from Sun Tzu's Art of War and B. H. Liddell Hart's book on military Strategy to the classroom. I generally just replaced "enemy" and "war" with "students" and "teaching" respectively. Don't get me wrong -- the students are obviously not the enemy -- but the resulting strategic principles have been astoundingly successful in the classroom.
    1. Know your students. This may be the most important, and the most often neglected. You can't make progress, or learn from your mistakes, if you don't know the precise effect of your actions. Plot grade distributions, track progress, get feedback -- do whatever it takes to provide yourself with a detailed record of your successes and your failures.
    2. Adjust your means to your ends. Teach ambitiously, but always face the facts. Students may unexpectedly turn out to lack an essential skill, and class time may be cut unexpectedly short. Always be flexible, and be willing to reset your teaching goals to accomodate your means.
    3. Keep your teaching goals at the forefront, even while being flexible. There are many ways to teach a subject, which should be explored. But getting side-tracked or stuck at a dead-end may hurt your chances of achieving this goal.
    4. Surprise your students. The psychological dislocation that surprise induces is absolutely invaluable to effective teaching. Surprise simultaneously garners attention, stimulates students to think, and improves long-term memory recall after class is over.
    5. Choose the path of least resistence -- as long as it still leads you to your goals. The clean and simple way to get a message across always trumps the sophisticated and complex one. (This maxim can be very difficult for philosophers.)
    6. Teach in a way that targets multiple objectives. If you fall short of achieving one, you may still achieve another, and thus still make progress towards your goals. Teach a difficult text that involves a few practical skills. Even if you don't nail the former, at least you'll still achieve the latter.
    7. Don't teach an unreceptive class "head on." On sunny Friday afternoons, there may be a barrier between you and the students. You can break this down, but not by plowing directly into the lesson plan. Circumnavigate: ask them to think through a puzzle, or discuss a funny question, or do anything that might make them more receptive. Once they're engaged, you can more effectively draw them into the lesson.
    8. Don't repeat a teaching tactic that has once failed. Give your tactic an all-out try -- but if it doesn't work, go back to the drawing board. It can be tempting to repeat what you just explained, but your students will benefit more from a new way of looking at the material.
    Enjoy!

    16 February 2009 | Post a Comment

    Get Started Playing Ehrenfeucht-Fraisse Games

    Ehrenfeucht-Fraisse games are a very useful method in logic, when you're trying to figure out if two models are elementarily (logically) equivalent or not. This may be of special interest to philosophers of science, since the 'empirical equivalence' of two models is much better characterized by elementary equivalence than it is by isomorphism.

    At any rate, I've written a friendly introduction to this method (PDF). Here's a little of what you'll find there.

    Ehrenfeucht-Fraisse games involve two players: a copier (who tries to copy the other player's moves), and a spoiler (who tries to spoil the other player's copying). I call the players, Erin and Fred:
    Erin (the spoiler) and Fred (the copier).

    All that Erin and Fred need to play a game is a pair of models (L-structures) M and N. The ordinals are nice, simple structures that can be used to illustrate how this works, so let's make M and N two ordinals -- say 7 and 8. We begin by setting the number of moves in the game -- say 3.

    Game play then consists of Erin first choosing an element of one ordinal, followed by Fred choosing an element of the other ordinal. The game is over when they've each chosen three elements. If the 3 elements from 7 are in the same order as the three elements of 8, the Fred (the copier) wins. If they're not, then Erin (the spoiler) wins. Below is an example game in which Fred has won.

    Erin always goes first. In this game, the choices from the left ordinal (7) match the order of the choices from the right ordinal (8), and so Fred wins.

    One of the most interesting applications of these games in model theory is established by a theorem due to Ehrenfeucht:
    Theorem: Two L-structures M and N are elementarily equivalent iff for every Ehrenfeucht-Fraisse game on M and N, Fred has a winning strategy.
    This fact has led to many interesting results, including a simple proof of which ordinals are elementarily equivalent. If this sounds interesting, it is! For more details, see my friendly introduction (PDF).

    Comments and suggestions are always appreciated. Enjoy!

    30 January 2009 | Post a Comment

    Get Started Reading Blogs on the Philosophy of Science

    Want to read some nice raw philosophy of science? Here are twelve options that I highly recommend.

    1. It's Only a Theory is a new blog on the philosophy of science, which appears very promising. Otávio Bueno (Miami), Gabriele Contessa (Carleton), Marc Lange (UNC), and Chris Pincock (Purdue) are currently running the show. Guest posts are being invited.

    2. Honest Toil is Chris's other very interesting blogue on the philosophy of mathematics.

    3. My Mind is Made Up is run by my fellow Pittsburgher Justin Sytsma. He produces some nice work on the philosophy of mind here on this generally amusing blog.

    4. Words and Other Things is run by another another fellow Pittsburgher, Shawn Standefer. WAOT has recently received a facelift, and is a great resource on logic, the philosophy of math, early analytic philosophy, and other philosophico-logical delights.

    5. Obscure and Confused Ideas contains Pitt-graduate Greg Frost-Arnold's thoughts on logic, early analytic philosophy, and the philosophy of science.

    6. The Statistical Mechanic (a.k.a. Wolfgang Beirl) has been producing some very interesting work lately on the philosophy of physics -- this blog really deserves to be more widely read.

    7. The Truth Makes Me Fret is another very interesting blog that covers topics in the philosophy of physics, but also a wide range of philosophy of science issues.

    8. Cosmic Variance is (Caltech physicist) Sean Carroll's frequent cyber-stomping ground. Apart from the general entertainment value of this blog, it is of special interest to for both its physical and its philosophical content.

    9. Backreaction is one of my very favorite blogs. Sabine Hossenfelder and Stefan Scherer (Perimeter Institute) provide a lot of great updates on physics, but also some excellent contributions to the philosophy of physics.

    10. A Mind for Madness ranges from very technical mathematical physics, to general philosophy of science, to music, and beyond.

    11. The Blog of Noah Greenstein produces a lot of very original philosophy, and takes its occasional jaunt into the philosophy of science.

    12. Philosopher's Anonymous. Ok, this isn't really philosophy of science. But it's hilarious. Especially if you are (or are on your way to becoming) a professional philosopher.
    That's all the philosophy of science blogs for today. Enjoy!

    31 December 2008 | Post a Comment

    Happy 2009! Five Tutorials for Philosophers of Physics

    We need more free resources and more helpful tips in the philosophy of physics. There are certainly some out there, but it would be great if they were easier to access and easier to find. While the soulphysics staff continues to work on this problem, here are five tutorials for philosophers of physics -- and anyone else who cares -- from the soulphysics archives.

    1. Get Started Using Automatic Symbol Insertion in MS Word. Reduce the stress this year. Here's an easy way to use mathematical symbols without having to deal with LaTeX.


    2. Get Started Improving Your Philsci Archive Experience. Broaden your horizons in the new year with everyone's favorite philosophy of science database. Here are some tricks to ease the experience.


    3. Get Started Reading Books and Articles on the Cheap. Trying to save money this year? Stop paying so much to read!


    4. Get Started Learning General Relativity Online. Free general relativity -- what more could you ask for in 2009?


    5. Get Started Improving Your Philosophical Apparel. Get a new look for the new year. Here are a few unique options for philosophers.


    Happy new year; we'll see you in 2009!

    11 July 2008 | Post a Comment

    Get Started Improving Your Philosophical Apparel

    It's easy enough to find science t-shirts and apparel out there. But how are you going to improve you philosophical style? Today, I'll suggest a few places where you can pick up some sweet philosophical duds.
    • Soul Physics on Zazzle. During times of structured procrastination, a few shirts were produced by yours truly.

    • The Philosophy Gift Shop. Here is where you go if you want a well-known quote by a dead philosopher on your t-shirt. Perhaps interesting for some, but there are more inspiring options.

    • SagaciTree. Slightly more interesting designs. But you can do better.

    • Philosophy at CafePress. There are some much more interesting designs here, both interesting and entertaining.

    • Zazzle.com is the most random, but in the end, this is where the best stuff is. If you're willing to sift around a bit, you can find some real gems. (I especially like this user's products.)


    That's all the philosophy shirts for today. Enjoy!

    23 June 2008 | Post a Comment

    Get Started Learning General Relativity Online

    General Relativity is the theory of gravitation introduced by Einstein in 1915, and developed throughout the 20th century. And you've decided you want to learn it. But why spend hundreds of dollars on textbooks? As I've shown before, it's easy to learn things on the cheap, without sacrificing quality!

    In this tutorial, I've compiled a list of introductory material on the physics and philosophy of general relativity, all of which is available for free online. If you know of any online resources that are not on this list, your comments are more than welcome!

    Contents:
    Non-mathematical introductions to general relativity.
    1. Einstein for Everyone, by John D. Norton. This is a complete introductory text. Many pictures and animations illustrating the central features of the theory. Emphasizes philosophical perspectives, where relevant. Available for free online.

    2. Introduction to General Relativity on Wikipedia. A quick overview of a few of the essential features of GR, on everyone's favorite non-scholarly resource.


    Mathematical introductions to general relativity.
    1. Oz and the Wizard, by John Baez. This is very entertaining introduction to general relativity in the form of a dialogue. It also contains a fantastic dictionary of common terms in GR.

    2. David Malament's lecture notes on GR (PDF) are also a pleasure to read. They are really a textbook introduction to GR, with an emphasis on mathematical and philosophical perspectives.

    3. Lecture notes on general relativity, by Sean M. Carroll. These are the course lectures for an MIT graduate course in general relativity, and have since been turned into a book. Also try the 24-page "no-nonsense" version of these notes (PDF).

    4. Introduction to Differential Geometry and General Relativity, by Stefan Waner. A beautifully arranged collection of lecture notes on differential geometry. Approach is highly mathematical, taking the reader from basic point-set topology all the way to Einstein's field equations.

    5. Tensors and Relativity, by Peter Dunsby. A first course in general relativity, beginning with special relativity. Includes an "assignments" section with hints. The layout is ugly and cumbersome, but the content is good.

    6. Introduction to General Relativity (PDF), by Gerald 't Hooft. These lecture notes have since been turned into a book with Wei Chen.

    7. Modern Relativity, by David Waite. A first course on general relativity, which assumes good familiarity with special relativity. Includes exercises.


    Philosophy of general relativity.

    1. Here are some graduate courses in the Philosophy of General Relativity (with tons of resources), taught by some of the leaders in the field: John Earman and John Norton, David Malament, Brad Skow, Jonathan Bain, and Craig Callendar

    2. John Norton's Introduction to the Philosophy of Space and Time gives Norton's characteristically clear (and opinionated) view of the field. Most of Norton's papers on the philosophy of general relativity are available here.

    3. David Malament's Classical General Relativity describes the mathematical structure of the theory, and introduces a few of the philosophical problems associated with it. Most of Malament's papers on the philosophy of general relativity are available here.

    4. The Philsci Archive's Relativity category contains most of the latest preprints in the philosophy of general relativity. (I have written some tips for using this resource.)

    5. John Earman v. Tim Maudlin: Two philosophy of physics giants discuss what general relativity teaches us about the nature of time. (Not really introductory, but too entertaining not to mention).

    Other general relativity resources.

    1. Black Holes, by Paul Townsend. From his Cambridge course on the black hole physics developed in the 60's and 70's.

    2. The Relativity Bookshelf at U. Toronto is brief but informative.

    3. Arxiv.org's general relativity category, on the other hand, is like drinking from a fire-hose. Hundreds of articles on general relativity appear every week.

    That's all the free general relativity for today. Enjoy!

    26 May 2008 | Post a Comment

    Get Started Reading Books and Articles on the Cheap

    'The Librarian'Tired of paying too much for textbooks, books, and articles? Tired of paying anything at all? With a little bit of effort, you can reduce the price of an otherwise expensive book to nothing -- or almost nothing.

    In this tutorial:Reading Legally & Honestly. Before you make that one-click purchase at Amazon.com, consider reading the same book for free, with these completely legal and honest tricks.

    1. Download Public Domain Books At books.googlecom. Before you actually purchase something by Kant, browse over 700 free books by Kant (in various languages and translations). Just make sure you select "Full View" in the dropdown menu, and Google returns only books that are old enough to have been released to the public domain. This trick is very effective, as long as the author you want is already dead.

    2. Download Free Articles from Preprint Servers. Read the almost-ready-for-print version, without paying for it! Physics and mathematics: arxiv.org. Philosophy of Science: philsci-archive.pitt.edu.

    3. Download Free Articles from the Author's Homepage. Did you know that Jeremy Butterfield has dozens of his most recent papers posted on his website? Or that John Norton has written a free introduction to Einstein's theories? You can always google an author that you're interested in. Or, cut to the chase and check out this meticulous list of philosophers with online papers, compiled by David Chalmers.

    4. Go to the Library. The what? Yes, the library. It's still the easiest way to get free books to read. Some libraries will even send books to you in the mail for free. Here's how to find a public library in your area. Or, visit your local University's library for an even grander selection.

    5. Buy very, very cheap books. Ok, so this one's almost free. There are hundreds of books selling at less than 1 cent on Amazon. They're not all worth a penny, but there are some real jewels among the noise, which you can get for only the price of shipping. To find them, try browsing by subject, and then selecting "Sort by Price: Low to High."

    Reading With Questionable Scruples. Disclaimer: these tricks are intended for legal use and for informational purposes only. Here are more ways to read on the cheap, which may require questionable scruples.

    1. Scan Books. With a little practice and a decent scanner, you can scan a 500-page textbook into PDF form in about 45 minutes. It's a good idea to work out a system in which you scan/flip/scan/flip... as quickly as possible.

      How do you get the book in the first place? Use any of the free methods mentioned above -- the library, for example. Don't have access to a scanner? Many university libraries and offices have public scanners. You can also buy a scanner for less than $20 on Amazon.

    2. Take Digital Photos of Books. If you don't have access to a scanner, you may have access to a digital camera. If you're creative, you can jimmy-rig a digital camera to work even more effectively than a scanner in copying books. They're also great for use in libraries, archives, and bookstores in which you aren't allowed to just take books off the premises.


    3. Expand "Limited Preview" Books on Google and Amazon. By entering clever search strings into the "Search this book" field on Amazon/Google, you can often read much more than the limited preview normally allows. If the next page is not available to read, but you can anticipate a keyword that will appear on that page, then searching for it will often make it available. This works best if you only want to read a single passage or a chapter, and have a little luck on your side.

    The Joy of Making Cheap Books. Still, there's nothing like having a real, live book in your hands to flip through. So it isn't ideal that many of these tricks will get you a PDF of a book or article, and not the book/article itself. But if you're willing to pay a little extra, this problem has a fairly easy fix: just print and bind books yourself.

    Many offices and universities will print will give you a free printing quota, or at least a great price on printing.

    You can also print at home. A ream of 500 sheets costs a few dollars, ink costs a few dollars per book, and spiral binding costs 4-5 dollars at FedEx or the UPS store. The total will be around $15 per book -- which is still much less than an original (even used!) textbook.

    Finally, if you're too lazy to do all this yourself, you can just have the whole job done at FedEx or the UPS Store. Tell them what you want printed, and ask for a spiral binding job. The price should still be less than $20 per textbook.

    Happy reading!

    16 May 2008 | Post a Comment

    Get Started Improving Your Philsci Archive Experience

    You may already know that Philsci Archive is the way to stay updated on new developments in the Philosophy of Science. Here are three easy tricks to make your experience more pleasant.

    1. Use Google to search philsci archive. Google is a far superior search engine. Why use anything else?
      Enter your search keywords into Google, followed by this string: site:philsci-archive.pitt.edu

      This will return a Google search for your keywords, restricted to Philsci archive. Trust me, this is a real pain-reliever: for example, searching for "van fraassen" returns baloney on Philsci archive's search engine, while Google returns hundreds of items. For more options, use Google's advanced search to find what you want.

    2. Browse by Category. Only look at the categories you're interested in.
      Go to Browse > Subject and select the category you're interested in.

      I recommend bookmarking several subjects for quick browsing. For example, here's Physics.

    3. Get updates in selected categories by email. Three easy steps:
      Step 1: register if you haven't done so already, and login to the registered users area.
      Step 2: Select "Change your subscription options" and click the "New Subscription" button.
      Step 3: Follow the instructions to design your email subscription.

      You can even select how often (or how rarely) you want to have an update sent to you.


    Enjoy!

    10 May 2008 | Post a Comment

    Get Started Using Automatic Symbol Insertion in MS Word

    So you write with mathematical symbols. You're not interested in learning LaTeX. But you're fed up with going to Insert > Symbol every three seconds in Microsoft Word. Here is an essential trick that will simplify your life.

    Begin by writing down all the mathematical symbols that you plan to use. Unfortunately, this will involve going to Insert > Symbol a bunch of times -- but just this once. For example, you might write down:

    δ ε π ƒ(x) x

    Now here's the trick.

    1. Select the first symbol on your list (in my case, δ).

    2. Go to Tools > AutoCorrect Options. In the "Replace" box, enter a code that you'll be able to remember represents your symbol. I usually prefix the name of the symbol with a front-slash; so in this example, I'll enter \delta into that box.

    3. The δ symbol itself should have already automatically appeared in the "With" box on the right.

    4. Make sure the "Formatted Text" dial is selected if you want to preserve the italics and other formatting you used.

    5. Click ok.

    That's it! Whenever you enter \delta into Microsoft word, it will automatically be replaced by δ. Now, just repeat this process for each of the symbols you wrote down, and you will have permanently entered these headache-relieving codes into Word's autocorrect database. So when I write down

    |\x - \pi| < \delta \rarrow |\fx - L| < \epsilon

    what appears is

    |x - π| < δ → |ƒ(x) - L| < ε

    The trick works for longer expressions too. For example, if I selected the expression above and go to Tools > Autocorrect Options, I can enter \LimitImp into the "Replace" box. Now, whenever I type

    \LimitImp

    what appears is
    |x - π| < δ → |ƒ(x) - L| < ε

    Happy calculating!