User Nick Kidman - Mathematics Stack Exchange

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	2,602 reputation	bio	website		visits	member for	1 year, 6 months
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Can I use my powers for good?

soft-question career-development

apr 11 at 0:40 MGA 80

102

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votes

23

answers

7

kviews

Examples of apparent patterns that eventually fail

big-list examples-counterexamples

apr 10 at 3:04 Douglas B. Staple 1,026

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109

votes

13

answers

4

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Can every proof by contradiction also be shown without contradiction?

logic proof-writing proof-theory

nov 28 at 15:29 ctype.h 599

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106

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20

answers

7

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Is mathematics one big tautology?

soft-question philosophy

1d ago ThisIsNotAnId 474

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5

answers

4

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Intuition for the definition of the Gamma function?

probability-theory intuition gamma-function

jan 23 at 23:19 Victor Wang 141

28

64

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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

7

63

votes

3

answers

2

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True or false? $x^2\ne x\implies x\ne 1$

logic

jan 10 at 21:12 Πάρτη Κοηλί 3,227

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14

answers

3

kviews

Formal proof for $(-1) \times (-1) = 1$

arithmetic proof-writing

mar 19 at 16:59 Ilmari Karonen 8,236

21

54

votes

6

answers

2

kviews

Is non-standard analysis worth learning?

analysis soft-question nonstandard-analysis

may 16 '12 at 21:58 Pete L. Clark 44.6k

25

52

votes

9

answers

2

kviews

How do I sell out with abstract algebra?

abstract-algebra soft-question applications advice career-development

may 20 at 3:11 Mohan 2,724

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46

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5

answers

1

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Why does mathematical convention deal so ineptly with multisets?

notation terminology math-history multisets

nov 7 at 11:00 Charles Stewart 1,847

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44

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4

answers

2

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What are the Axiom of Choice and Axiom of Determinacy?

set-theory intuition axiom-of-choice

nov 26 at 11:34 Matt N. 15.3k

26

44

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6

answers

1

kviews

How Do You Actually Do Your Mathematics?

soft-question notation education

mar 5 '11 at 0:24 Billare 993

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43

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10

answers

4

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Complex math problem that is easy to solve

soft-question

mar 13 at 6:26 Faust7 652

24

40

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5

answers

1

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What are the issues in modern set theory?

reference-request set-theory

mar 7 '11 at 17:22 JDH 18.5k

14

40

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7

answers

2

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Is it possible to represent every huge number in abbreviated form?

number-theory big-numbers

jun 28 at 2:38 Joe 3,060

9

40

votes

5

answers

2

kviews

In what sense are math axioms true?

logic philosophy axioms

apr 4 '12 at 0:26 jerico 82

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4

answers

1

kviews

Showing that $\int\limits_{-a}^a \frac{f(x)}{1+e^{x}} \mathrm dx = \int\limits_0^a f(x) \mathrm dx$, when $f$ is even

homework calculus real-analysis integration

oct 21 at 3:06 user17762 76.3k

26

39

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4

answers

1

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Showing that $\int\limits_{-a}^a \frac{f(x)}{1+e^{x}} \mathrm dx = \int\limits_0^a f(x) \mathrm dx$, when $f$ is even

homework calculus real-analysis integration

oct 21 at 3:06 user17762 76.3k

18

37

votes

5

answers

785

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Why are the solutions of polynomial equations so unconstrained over the quaternions?

polynomials roots quaternions abstract-algebra

may 7 '12 at 6:46 Marc van Leeuwen 23.9k

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36

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13

answers

1

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Surprising Generalizations

soft-question big-list intuition

feb 23 at 21:44 vonbrand 6,598

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35

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17

answers

3

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What's the goal of mathematics?

soft-question philosophy

dec 26 '11 at 23:32 Andrew 1,643

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33

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8

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1

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What makes elementary functions elementary?

soft-question intuition definition elementary-functions

mar 1 at 21:15 imranfat 414

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33

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5

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3

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Getting better at proofs

soft-question proof-strategy

oct 28 '10 at 23:25 Qiaochu Yuan 118k

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4

answers

3

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Lesser-known integration tricks

calculus big-list integration

mar 25 '12 at 16:59 Linda Collins Sandgren 41

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4

answers

1

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What kind of work do modern day algebraists do?

abstract-algebra group-theory soft-question ring-theory field-theory

aug 16 at 15:15 Will Knott 1

13

30

votes

3

answers

531

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Why do we look at morphisms?

abstract-algebra soft-question category-theory intuition

jan 23 at 20:41 Ilya 14.2k

29

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9

answers

1

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Mind-blowing mathematics experiments

soft-question experimental-mathematics

jan 3 at 23:49 Paul Manta 1,219

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13

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List of interesting integrals for early calculus students

calculus integral soft-question integration big-list

feb 7 at 22:54 Valentin 2,812

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1

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1

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Sheaf cohomology: what is it and where can I learn it?

reference-request algebraic-topology algebraic-geometry soft-question sheaf-theory

jul 31 '11 at 15:55 Akhil Mathew 16.2k

Nick Kidman

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