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MathML

Posts with this logo use MathML. To see the equations, you either need Mozilla or a MathML plugin for IE/Win. You will also need to install some fonts. The posts were authored in itex (an extension of WebTeX) using the itexToMML Text Filter plugin for MovableType (the README file).

Calendar

March 2009's Entries

• Fun (With) Video
  • Mar 2, 2009
  • Fantastic fingering ferrofluids.

Random Past Entries

• Full Disclosure
  • Jan 5, 2007
  • A serious MovableType security vulnerability.
• Spin Chains
  • Sep 15, 2004
  • Catching up on integrable spin chains and anomalous dimensions in gauge theory.
• I Came, I Saw, I Validated
  • May 7, 2003
  • Evan’s little essay has exploded like a cluster bomb on the geeky end of the blogosphere. It, and the more…
• Superconnections for Dummies
  • May 12, 2008
  • A brief review of Quillen superconnections, and an introduction to the “Schreiber” superconnection.
• 5 Years
  • Oct 19, 2007
  • The honeymoon is definitely over.

MT How-To

1. Validating Comments
   • May 3, 2003
   • Run comments through the W3C Validator before posting. The first in a series of “How-To” articles on MovableType.
2. Bullet-Proofing II
   • May 11, 2003
   • More bullet-proofing tips to ensure your blog is valid XHTML
3. Text Filters for Comments
   • May 19, 2003
   • Allow a choice of Text Filters in your Comment-entry form.
4. Serve it Up!
   • May 26, 2003
   • Serving your blog as XHTML 1.1 with a MIME-type of application/xhtml+xml.
5. <abbr>, <acronym>, Accessibility & ...
   • Sep 10, 2003
   • A tutorial on marking up abbreviations and an MT plugin which makes the job easy.
6. Forcing Comment Previews
   • Jun 16, 2004
   • Introducing the MTHash plugin, and a reliable way to force Comment Previews.
7. Internationalization and Trackbacks
   • Feb 17, 2005
   • In which our hero gets fed up with gibberish Trackbacks and takes matters in his own hands.

Recent Comments

• Action-Angle Variables (24)
  • Matthew Kvalheim
    • Apr 14, 2018 20:23
    • Sorry — when I said “global”, what I really meant was globally on defined on a torus or on a ...
  • Jacques Distler
    • Apr 14, 2018 20:06
    • But then there is the question: why do the local 1-forms dφ id\varphi^i patch together to yield well-defined global 1-forms? ...
  • Matthew Kvalheim
    • Apr 14, 2018 18:57
    • Interesting. I didn’t know that result. Thanks for the reference. Using that result, given (K 1,…,K n)(K_1,\ldots,K_n), we can locally ...
  • Jacques Distler
    • Apr 14, 2018 12:12
    • It seems to me that your complaint, here, is purely a local one, and it is the thing that is ...
  • Matthew Kvalheim
    • Apr 14, 2018 03:28
    •       ω\omega is a fixed, known 2-form. I completely agree.       Given ω\omega and the K iK_i, this defines a ...

• MathML Update (1)
  • Random Bloke
    • Apr 7, 2018 00:38
    • PW has a new post and he mentions you and an interaction with you in the past. Can you comment ...

• Statistical Innumeracy (2)
  • Peter Theophilopoulos
    • May 20, 2017 13:31
    • The issue that many times an benign fibroid cyst leads to fears of the worst. My wife has had two ...
  • Jim Lifter
    • Jan 15, 2011 15:34
    • I couldn’t agree more. We make such irrational decisions when such great data is available. Your example about breast cancer ...

• Effective Field Theory of Inflation (5)
  • Jacques Distler
    • Apr 9, 2017 11:47
    • Would it be correct to say that I can write down such an effective field theory for any frw coupled ...
  • Nirmalya
    • Apr 4, 2017 03:05
    • Dear Jacques, Would it be correct to say that I can write down such an effective field theory for any ...
  • Jacques Distler
    • Jan 12, 2008 22:33
    • In a non-Lorentz-invariant effective theory, the power counting can be rather different from what you would find in a Lorentz-invariant ...
  • wandering.the.cosmos
    • Jan 12, 2008 22:17
    • Dear Jacques, I’m just a grad student here. This paper reminds me of a question I’ve been wondering about. In ...
  • Robert
    • Jan 9, 2008 05:00
    • Thats indeed a very nice and carefull paper. Thanks for the link.

• Responsibility (28)
  • Jacques Distler
    • Mar 18, 2017 10:37
    • The theorem about Fourier Transforms is correct (and, of course, has nothing to do with Relativity). Your leap from that ...
  • dx
    • Mar 18, 2017 08:34
    • Jaques, The crucial idea required to wed quantum mechanics and relativity is the idea of antiparticles, which arise naturally when ...
  • Vladimir Kalitvianski
    • Mar 17, 2017 12:10
    • As I got stuck at f i(k→)f^i(\vec{k}) and the continuity equation is postulated rather than derived from (1), I am ...
  • Vladimir Kalitvianski
    • Mar 16, 2017 08:21
    • For the sake of coherence with x ix^i, we should have written the function ff with the upper index (superscript), ...
  • Vladimir Kalitvianski
    • Mar 16, 2017 08:03
    • The function f i(k→)f_i(\vec{k}) can be any function since the commutator does not impose any restriction to it. Let us ...

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