User Adrián Barquero - Mathematics Stack Exchange

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	location	College Station, TX
	age	27
visits	member for	2 years, 9 months
	seen	5 mins ago
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	6,712 reputation	bio	website		visits	member for	2 years, 9 months
21342 badges		location	College Station, TX		seen	5 mins ago

137

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Why can you turn clothing right-side-out?

general-topology algebraic-topology

1d ago Double AA 126

166

266

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115

answers

13

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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

138

189

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21

answers

17

kviews

How to study math to really understand it and have a healthy lifestyle with free time?

soft-question advice

dec 31 at 5:24 Grigor 1

85

156

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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

81

131

votes

9

answers

8

kviews

What's an intuitive way to think about the determinant?

linear-algebra intuition determinant

may 13 at 7:14 MJD 20.8k

77

115

votes

28

answers

8

kviews

A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language

soft-question big-list examples-counterexamples

aug 6 at 1:40 John 1

48

80

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91

answers

8

kviews

Which one result in maths has surprised you the most?

big-list

mar 8 at 20:38 Arthur Fischer 21.3k

40

67

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5

answers

3

kviews

In (relatively) simple words: What is an inverse limit?

category-theory intuition universal-algebra

mar 29 at 8:55 Pieter Cuijpers 31

40

64

votes

6

answers

4

kviews

How can you prove that a function has no closed form integral?

calculus real-analysis integration differential-algebra

sep 19 at 17:52 Nils Matthes 1,082

28

64

votes

9

answers

3

kviews

Why is Euler's Gamma function the “best” extension of the factorial function to the reals?

real-analysis education gamma-function special-functions

sep 25 at 21:06 Gottfried Helms 7,197

26

62

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7

answers

5

kviews

Tablet for reading textbooks and writing math by hand?

soft-question math-software learning hardware

mar 28 at 16:04 hhh 1,502

31

61

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8

answers

3

kviews

Importance of Representation Theory

representation-theory physics

feb 23 '11 at 22:14 Community♦ 1

64

60

votes

6

answers

1

kviews

Best Sets of Lecture Notes and Articles

big-list self-learning learning

may 9 at 21:19 Andrew 1,643

35

57

votes

1

answer

4

kviews

What's the significance of Tate's thesis?

algebraic-number-theory

feb 19 '12 at 3:02 Matt E 57.8k

39

56

votes

8

answers

2

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Self-Contained Proof that $\sum\limits_{n=1}^{\infty} \frac1{n^p}$ Converges for $p > 1$

calculus real-analysis sequences-and-series

sep 24 at 6:50 chatur 117

18

52

votes

4

answers

2

kviews

Does $R[x] \cong S[x]$ imply $R \cong S$?

abstract-algebra commutative-algebra

sep 20 '11 at 2:56 Leon Lampret 2,625

34

46

votes

12

answers

3

kviews

Intuitive explanation of Cauchy's Integral Formula in Complex Analysis

intuition complex-analysis

apr 14 '11 at 5:18 Community♦ 1

24

38

votes

5

answers

1

kviews

How does one give a mathematical talk?

commutative-algebra soft-question advice

dec 18 at 12:33 Nicolas Essis-Breton 1,362

13

37

votes

3

answers

1

kviews

How come the number $N!$ can terminate in exactly $1,2,3,4,$ or $6$ zeroes but never $5$ zeroes?

elementary-number-theory factorial

may 5 '12 at 17:07 Aryabhata 47.5k

34

36

votes

14

answers

5

kviews

Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$?

analysis complex-analysis

mar 12 at 13:08 xpaul 1,016

33

36

votes

19

answers

3

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Mathematical subjects you wish you learned earlier

soft-question learning

feb 13 at 23:19 andyvn22 101

12

34

votes

3

answers

395

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The resemblance between Mordell's theorem and Dirichlet's unit theorem

number-theory algebraic-number-theory elliptic-curves arithmetic-geometry

mar 5 at 12:58 QiL'8 15.3k

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33

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4

answers

3

kviews

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

5

33

votes

4

answers

1

kviews

Nice expression for minimum of three variables?

functions

dec 8 '11 at 23:12 Srivatsan 15.6k

21

32

votes

4

answers

1

kviews

How is $\mathbb{C}$ different than $\mathbb{R}^2$?

complex-analysis

nov 29 '11 at 18:10 Steven Stadnicki 14.2k

13

31

votes

4

answers

2

kviews

Are all algebraic integers with absolute value 1 roots of unity?

algebraic-number-theory

aug 9 at 12:32 Community♦ 1

13

31

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4

answers

1

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Golden Number Theory

number-theory commutative-algebra algebraic-number-theory

sep 18 at 17:45 Neves 1,120

4

29

votes

2

answers

698

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Any positive integer solutions to $x^6+y^{10}=z^{15}$?

elementary-number-theory diophantine-equations

mar 30 '11 at 15:43 Peter Mortensen 154

37

29

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6

answers

3

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How Do You Go About Learning Mathematics?

soft-question self-learning

nov 13 '11 at 15:43 Quixotic 7,930

5

28

votes

3

answers

2

kviews

Why is the Möbius strip not orientable?

geometry general-topology differential-geometry algebraic-topology

dec 28 '10 at 23:09 Ryan Budney 13.3k

Adrián Barquero

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