Complex analysis

Residue at infinity

In complex analysis, a branch of mathematics, the residue at infinity is a residue of a holomorphic function on an annulus having an infinite external radius. The infinity is a point added to the local space in order to render it compact (in this case it is a one-point compactification). This space denoted is isomorphic to the Riemann sphere. One can use the residue at infinity to calculate some integrals. (Wikipedia).

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What is infinity ?

Definition of infinity In this video, I define the concept of infinity (as used in analysis), and explain what it means for sup(S) to be infinity. In particular, the least upper bound property becomes very elegant to write down. Check out my real numbers playlist: https://www.youtube.co

From playlist Real Numbers

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Infinity Minus Infinity

Indeterminate Forms In this video, I introduce the concept of indeterminate forms and explain why it is necessary to even have calculus. Then, I go over the main forms, all while emphasizing that in each of them, there is a tug-of-war situation going on. Enjoy! Check out my Calculus Play

From playlist Calculus

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Limits At Infinity

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From playlist Limits

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Infinity

This video provides a description of infinity with several examples. http://mathispower4u.com

From playlist Linear Inequalities in One Variable Solving Linear Inequalities

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6 Continuity

What happens to limits at infinity. We also look at one of the uses of limits: continuity.

From playlist Life Science Math: Limits in calculus

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Touching Infinity: It's Not Out of Reach

The conventional way to represent the Real Number system is to think of the numbers as corresponding to points along an infinite straight line. The problem is that in this representation there is no place for "infinity". Infinity is not a real number. This video shows an alternate visua

From playlist Lessons of Interest on Assorted Topics

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What is infinity?

What’s the biggest number you can think of? Well, what about one more than that number? We can’t really comprehend the idea of infinity, but it’s still a useful concept in science. Brian Greene explains more. Subscribe to our YouTube Channel for all the latest from World Science U. Visit

From playlist Science Unplugged: Physics

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Can You Define the Immeasurable?

What is infinity? Can you define something that, by definition, has no boundaries? A subject extensively studied by philosophers, mathematicians, and more recently, physicists and cosmologists, infinity still stands as an enigma of the intellectual world. We asked people from all walks of

From playlist Mathematics

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Infinity - Sixty Symbols

It's a concept which intrigues mathematicians, but scientists aren't so keen on it. More at http://www.sixtysymbols.com/

From playlist From Sixty Symbols

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Complex Analysis: Residue At Infinity

Today, we take a look an interesting concept called the residue at infinity.

From playlist Contour Integration

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Complex analysis: Residue calculus

This lecture is part of an online undergraduate course on complex analysis. We describe the residue calculus, and show how to use it to evaluate some integrals. For the other lectures in the course see https://www.youtube.com/playlist?list=PL8yHsr3EFj537_iYA5QrvwhvMlpkJ1yGN

From playlist Complex analysis

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Complex Analysis: The Basel Problem

Today, we solve the Basel Problem using complex analysis! Residues at higher order poles: https://www.youtube.com/watch?v=9hdZDHkKoAM This is a long video, so here are some timestamps for each section 1:14 Chapter 1 - Motivation 5:45 Chapter 2 - Finding f(z) 13:51 Chapter 3 - Sum of the

From playlist Contour Integration

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Ome-god! A stunning integral - Wacky Calc Wednesday

I love you, please subscribe: https://www.youtube.com/channel/UClMCwEEK5Xfm7OMGjW0FYzQ?view_as=subscriber Instagram: https://www.instagram.com/whatthehectogon/ Email: whatthehectagon@gmail.com I've been waiting to do this integral for so long! It's a truly magnificent result, and a gre

From playlist Wacky Calc Wednesdays

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Residues of Complex Functions -- Complex Analysis 21

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From playlist Complex Analysis

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Integrals of Rational Functions from -Infinity to Infinity

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From playlist Complex Analysis Made Simple

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Complex Analysis: Basel Problem Variation

Today, we use the residue theorem from complex analysis to evaluate a similar infinite sum to the Basel problem. Basel Problem using complex analysis: https://www.youtube.com/watch?v=5R0JFhFc7VI

From playlist Contour Integration

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Complex Analysis: Dogbone Contour Generalisation

Today, we come up with a very nice generalisation for an integral using the dogbone contour from complex analysis. Dogbone contour example: https://www.youtube.com/watch?v=UDIKojCQ94U&t=2s Residue at Infinity: https://www.youtube.com/watch?v=n3bD3MW6Hvk

From playlist Contour Integration

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Infinite Limits With Equal Exponents (Calculus)

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From playlist Calculus

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Complex Analysis: Dogbone Contour Example

Today, we go over the solution to an example of the dogbone contour. This example was taken from the following wikipedia page: https://en.wikipedia.org/wiki/Contour_integration Residues At Infinity: https://www.youtube.com/watch?v=n3bD3MW6Hvk Timestamps: 0:46 Step 1: The branch cuts 13:2

From playlist Contour Integration

Related pages

Riemann sphere | Compact space | Integral | Residue theorem | Annulus (mathematics) | Alexandroff extension | Complex analysis | Henri Cartan | Residue (complex analysis) | Algebraic variety | Isomorphism | Holomorphic function