User Joseph Quinsey - Mathematics Stack Exchange

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	location	Canada
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visits	member for	1 year, 6 months
	seen	yesterday
stats	profile views	118

	376 reputation	bio	website		visits	member for	1 year, 6 months
416 badges		location	Canada		seen	yesterday

77

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28

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8

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

aug 6 at 1:40 John 1

39

95

votes

15

answers

5

kviews

In the history of mathematics, has there ever been a mistake?

math-history fake-proofs

apr 28 at 18:46 Pete L. Clark 44.6k

86

81

votes

22

answers

5

kviews

List of Interesting Math Videos/ Documentaries

soft-question big-list

may 10 at 4:14 cyclochaotic 398

41

60

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6

answers

3

kviews

Prove elementarily that $\sqrt[n+1] {(n+1)!} - \sqrt[n] {n!}$ is strictly decreasing

sequences-and-series

apr 3 at 3:36 Mark Hurd 372

25

52

votes

9

answers

2

kviews

How do I sell out with abstract algebra?

abstract-algebra soft-question applications advice career-development

2d ago Mohan 2,724

16

37

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6

answers

7

kviews

Results that came out of nowhere.

soft-question math-history big-list

jan 30 at 13:20 artied 1

12

33

votes

4

answers

2

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Is there any branch of Mathematics which has no applications in any other field or in real world?

soft-question math-history

mar 16 at 22:42 Andres Caicedo 24.4k

15

32

votes

6

answers

1

kviews

Why is compactness in logic called compactness?

general-topology logic terminology compactness

jan 26 at 18:25 Holdsworth88 3,465

18

31

votes

5

answers

799

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Studying for the Putnam Exam

big-list contest-math self-learning learning

apr 4 at 7:50 zyx 10.9k

14

25

votes

3

answers

2

kviews

Why are vector spaces not isomorphic to their duals?

linear-algebra vector-spaces

aug 22 '11 at 18:20 Arturo Magidin 158k

19

24

votes

7

answers

1

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List of interesting math podcasts?

soft-question big-list online-resources

mar 29 at 16:13 Jorge Fernández 2,264

6

17

votes

1

answer

450

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A continued fraction involving prime numbers

prime-numbers limit continued-fractions

sep 16 '11 at 18:02 J. M. 38.9k

11

16

votes

5

answers

480

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relaxing maths papers

reference-request soft-question

nov 18 '11 at 19:45 Isura 11

3

16

votes

4

answers

513

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Common student mistakes/misconceptions in a first year calculus course

calculus teaching

dec 24 at 0:52 amWhy 54.6k

14

15

votes

2

answers

334

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History of Modern Mathematics Available on the Internet

reference-request math-history

jun 8 '12 at 18:07 Holdsworth88 3,465

5

15

votes

3

answers

250

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Improving one's calculation skills

calculus reference-request

feb 5 at 21:09 Alexander Shamov 1,421

2

15

votes

1

answer

245

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Does there exist a copy of Euclid's Elements with modern notation and no figures?

reference-request euclidean-geometry math-history

may 1 at 12:59 Community♦ 1

5

14

votes

4

answers

527

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Fun math for young, bored kids?

recreational-mathematics teaching motivation

oct 1 '11 at 22:51 Raphael 1,342

12

votes

4

answers

404

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Bag of tricks in Advanced Calculus/ Real Analysis/Complex Analysis

calculus real-analysis complex-analysis big-list

jan 11 at 4:10 KCd 5,920

2

11

votes

1

answer

91

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Introduction to the trace formula for people outside number theory

reference-request algebraic-geometry representation-theory algebraic-number-theory complex-geometry

may 13 at 3:57 Matt E 58k

4

10

votes

0

answers

165

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On the large cardinals foundations of categories

set-theory category-theory large-cardinals

may 16 at 11:59 Asaf Karagila 91k

3

8

votes

1

answer

228

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The physical meaning of the tensor product

linear-algebra abstract-algebra representation-theory tensor-products

feb 21 at 19:10 Haskell Curry 11.1k

1

5

votes

1

answer

124

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How to most efficently remedy mathematical deficencies

soft-question self-learning teaching learning

feb 18 at 0:59 awashburn 176

5

votes

6

answers

340

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List of problem books in undergraduate and graduate mathematics

reference-request big-list problem-solving exercises-and-solutions

feb 18 at 12:32 daniel 2,247

2

5

votes

2

answers

320

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Does every infinite $\Sigma^1_1$ set have an infinite $\Delta^1_1$ subset?

logic computability descriptive-set-theory

apr 14 '12 at 8:30 t.b. 43.1k

2

4

votes

1

answer

140

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A problem with limit

calculus limit

mar 22 at 17:59 David Moews 10.2k

1

3

votes

1

answer

39

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Find point $X$ such that line through plane $E$ and sphere $S$ meet at $(0,0,1)$ (stereographic projection)

homework linear-algebra differential-geometry

feb 23 at 21:31 adam W 3,180

1

3

votes

8

answers

212

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Scalar triple product - why equivalent to determinant?

linear-algebra

feb 26 at 4:17 Muphrid 3,394

2

3

votes

1

answer

92

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Is the expressive power of infinitary logic language $L(\infty,\infty)$ larger, the same or smaller than that of ZFC+large cardinal axioms?

logic set-theory cardinals large-cardinals higher-order-logic

apr 19 at 16:23 Jacob H 65

1

3

votes

1

answer

60

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Classification of models

homework model-theory

apr 22 at 17:41 Alex Kruckman 2,581

Joseph Quinsey

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