User amr - Mathematics Stack Exchange

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	375 reputation	bio	website		visits	member for	1 year, 7 months
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166

266

votes

115

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What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)

may 6 at 4:59 Jori Mäntysalo 31

181

161

votes

23

answers

10

kviews

Proofs that every mathematician should know?

soft-question big-list

mar 25 at 0:36 Glen O 3,127

85

156

votes

6

answers

4

kviews

“The Egg:” Bizarre behavior of the roots of a family of polynomials.

abstract-algebra complex-analysis algebraic-geometry numerical-methods recreational-mathematics

feb 27 at 20:28 Bruno 6,971

29

131

votes

19

answers

4

kviews

Why don't we define “imaginary” numbers for every “impossibility”?

soft-question

dec 21 at 3:57 bibo 1

91

131

votes

17

answers

8

kviews

Different methods to compute $\sum\limits_{n=1}^\infty \frac{1}{n^2}$

sequences-and-series complex-analysis fourier-analysis big-list faq

mar 8 at 13:57 xpaul 1

10

44

votes

3

answers

1

kviews

Why does the Mandelbrot set contain (slightly deformed) copies of itself?

fractals

may 4 '12 at 10:48 MathematicalOrchid 1,060

26

44

votes

6

answers

1

kviews

How Do You Actually Do Your Mathematics?

soft-question notation education

mar 5 '11 at 0:24 Billare 993

23

33

votes

4

answers

3

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Is there a quick proof as to why the vector space of $\mathbb{R}$ over $\mathbb{Q}$ is infinite-dimensional?

linear-algebra

sep 26 '11 at 20:12 Leon Lampret 2,625

10

30

votes

7

answers

570

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Appearance of Formal Derivative in Algebra

abstract-algebra algebraic-geometry polynomials soft-question

mar 8 at 8:27 dtldarek 8,259

8

22

votes

3

answers

415

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Is $\mathbb{R}^{\infty}$ homeomorphic to $\mathbb{R}^{\infty}\setminus\{0\}$?

general-topology functional-analysis

mar 6 at 19:03 Henno Brandsma 9,722

6

14

votes

6

answers

726

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Good introductory book on geometric algebra

geometry reference-request clifford-algebras geometric-algebras

mar 27 at 3:37 taruhan bola online 1

7

13

votes

2

answers

1

kviews

Elliptic Curves and Points at Infinity

algebraic-geometry elliptic-curves

may 20 '11 at 19:15 ogerard 823

7

10

votes

4

answers

956

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Is there no solution to the “hardest” puzzle?

logic induction puzzle

may 5 at 5:39 keegan 1

2

10

votes

1

answer

181

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How many integers between [3,000, 8,000] have digit sum 20?

combinatorics

mar 25 at 0:03 Adi Dani 5,952

2

8

votes

4

answers

405

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If a function can only be defined implicitly does it have to be multivalued?

algebra-precalculus functions definition

mar 4 at 21:53 Andres Caicedo 24.4k

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6

votes

3

answers

183

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Does the category framework permit new logics?

logic set-theory category-theory model-theory topos-theory

oct 27 at 18:50 Carl Mummert 25.6k

3

6

votes

3

answers

516

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A Concrete Approach to Category Theory

soft-question category-theory learning

sep 29 at 22:03 Adam Ray 45

2

3

votes

3

answers

315

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Is there a text that provides the proof of Fermat's Last Theorem?

number-theory reference-request math-history

may 2 at 18:57 P.Ranawala 1

1

2

votes

2

answers

84

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Primes and the Ramanujan sum.

number-theory

mar 24 at 20:40 lee12 11

1

2

votes

1

answer

70

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Some Chaotic Fun for the middle of the night. (basic)

homework differential-equations chaos-theory

mar 26 at 2:18 MITjanitor 1,577

1

vote

2

answers

162

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Compute $\sum_{k=1}^{n} \frac 1 {k(k + 1)} $

homework summation

feb 4 at 3:43 amWhy 54.5k

1

vote

2

answers

120

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Formula to reverse digits

elementary-number-theory irrational-numbers

mar 7 at 6:33 Fixed Point 2,012

2

0

votes

1

answer

107

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Cantor set on the circle

general-topology analysis

mar 16 at 1:49 David Moews 10.2k

1

0

votes

1

answer

91

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Product integral of $x$ between $1/a$ and $a$ “should” equal 1 but doesn't

real-analysis integration

aug 12 at 10:07 Did 102k

amr

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