Talk:Methods of contour integration

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In my university's adv. calculus course number 4 was called "Pacman rule". Is it popular imformal name or just local name?

Hehe. Sounds like it's an informal (and local - I've never heard of it) name. Dysprosia 10:22, 3 September 2005 (UTC)

Contents

[edit] The first sentence is inaccurate

The first sentence says

"In complex analysis, contour integration is a method of evaluating certain integrals of real-valued functions along intervals on the real line that are not readily found by using only real variables."

This is an overly restrictive definition of what contour integration is, because it can be applied to complex-valued functions as well. I would suggest rewording this to

"In complex analysis, contour integration is a method of evaluating certain integrals along closed paths in the complex plane. This can be useful for evaluating integrals along the real line that are not readily found by using only real variables."

--Plasma g (talk) 16:49, 12 April 2008 (UTC)

[edit] there's a minor error

When it gives cos[theta]=(1/2)(z+1/z), it first states cos[theta] as (1/2)e^{i theta) +e^(-i theta). The 1/2 should multiply both exponents. Minor error, but worth fixing whenever anyone reads this that knows how to edit the math. And when you fix it, please delete my comment =)

Nelson

I thought I'd mention that this appears to have been fixed by now.

[edit] Vote for new external link

Here is my site with contour integration example problems. Someone please put this link in the external links section if you think it's helpful and relevant. Tbsmith

http://www.exampleproblems.com/wiki/index.php/Complex_Variables#Complex_Integrals

[edit] Bad wrapping of figures?

Some of the text in this page doesn't wrap properly around the figures in my browser (Firefox 1.0.4). Anyone else see this problem/know how to fix it?

Yeah I get the same problem.ACielecki 02:07, 12 April 2006 (UTC)

[edit] Added page linked to for "Estimation lemma", please check

I saw that there was no page for "Estimation lemma" which is linked to, so I created the page. It's the first one I've ever made so would appreciate help with it if you see room for improvement. For the example I used the same integral used in the example on this page, which I thought fit well.

Who creates the graphics? The "estimation lemma" could use an upper half-circle contour of radius 'a' and Γ near it to name the contour. --Menorman 07:25, 23 June 2006 (UTC)