Ivan Lerner

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491 reputation

117

bio	website	facebook.com/ivan.lerner.1
	location	Sao Paulo, Brazil
	age	20
visits	member for	8 months
	seen	1 hour ago
stats	profile views	28

Physics student at the University of Sao Paulo

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8 Answers

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29	Too old to start math
2	Weird integration.
1	Laurent expansion of $\frac{e^{iz}}{z\,(z^2+1)^2}$ at $z=i$.
1	Why $\sigma_{\bar{x}}=\frac{\sigma}{\sqrt{n}}$
0	Evaluate $ \ \frac{1}{2 \pi i} \oint_{\|z\|=3} \frac{f' (z)}{f(z)}\,dz ,~~\mbox{ where }~ f(z) = \frac{z^2 (z-i )^3 e^z}{3 (z+2 )^4 (3z - 18 )^5} . \ $

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491 Reputation

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6 Questions

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2	How can I prove that the Gibbs phenomenon overshoot for a Fourier Series is approximately 9%?
2	What is being researched on the frontiers of math and what are the expected applications for it?
2	Properties of a complex exponential function. [closed]
1	Residues and Laurent expansion
1	Morera's theorem

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19 Tags

2 integration	0 soft-question × 2
1 complex-analysis × 5	0 intuition
1 statistics	0 advice
1 sequences-and-series	0 learning
0 calculus × 2	0 residue-calculus

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9 Accounts

$Mathematics Stack Exchange$	Mathematics	491 rep	117
	Ask Ubuntu	128 rep	15
	Unix & Linux	109 rep	3
	Stack Overflow	101 rep	1
$TeX - LaTeX Stack Exchange$	TeX - LaTeX	101 rep	2

17 Badges

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Editor	Tag Editor
Custodian × 2	Critic
Citizen Patrol	Organizer
Vox Populi	Nice Answer

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165 Votes Cast

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