Mathematics - Stack Exchange

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votes

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answer

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Why can we compute the natural maps in group cohomology (restriction, etc.) so explicitly with the usual cochain complex?

cohomology

4m ago Jim Belk 36

0

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1

answer

22

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A Nice Sylow Theory Problem

group-theory

36m ago Arturo Magidin 840

0

votes

2

answers

44

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equation of a curve given 3 points and additional (constant) requirements

functions algebraic-curves

46m ago J. M. 1,405

3

votes

1

answer

8

views

Sufficient statistics vs. Bayesian sufficient statistics

probability statistics

1h ago Srikant Vadali 105

0

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0

answers

11

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Solving Diffie–Hellman problem for low primitive root

number-theory modular-arithmetic cryptography

2h ago Baldur 1

4

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0

answers

18

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What are some examples of theories stronger than Presburger Arithmetic but weaker than Peano Arithmetic?

number-theory logic

2h ago Dan Brumleve 250

1

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0

answers

10

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normalization factor for restricted density

integral

2h ago Yaroslav Bulatov 137

3

votes

2

answers

49

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How do I calculate a specific variation for a known value of the normal distribution function?

algorithms computer-science

3h ago Kaestur Hakarl♦ 1,377

8

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6

answers

191

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Intuitive explanation of Cauchy's Integral Formula in Complex Analysis

intuition complex-analysis

3h ago phv3773 39

1

vote

3

answers

72

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3D software like GeoGebra

geometry math-software

4h ago Ryan Budney 476

4

votes

2

answers

93

views

Maximal Ideals in the Ring of Complex Entire Functions

analysis abstract-algebra complex-analysis

4h ago Andrea Mori 121

1

vote

2

answers

26

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5-vertex graphs with vertices of degree 2

graph-theory

4h ago Marco Castronovo 205

2

votes

4

answers

156

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Adding powers of i

complex-numbers

5h ago Bill Dubuque 2,825

2

votes

2

answers

35

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How do I find if two triangles are adjacent, when they differ in size?

geometry

6h ago fmartin 33

0

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1

answer

47

views

How do you show that $l_p \subset l_q$ for $p \leq q$?

analysis

6h ago Arturo Magidin 840

-1

votes

4

answers

116

views

How to build the real number system?

real-analysis

6h ago zar 424

3

votes

1

answer

59

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How do you show the ring of formal laurent series is well-defined?

abstract-algebra terminology homework rings

7h ago Arturo Magidin 840

3

votes

4

answers

84

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Finding a function that approaches another function

calculus math-software

7h ago Andy 106

1

vote

1

answer

13

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How do you find T-Junctions in an array of triangles?

geometry

7h ago bobobobo 133

20

votes

1

answer

348

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Cutting sticks puzzle

combinatorics puzzle

8h ago Gerard 9

1

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0

answers

40

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Determine the complete real solution to a homogeneous differential equation

homework differential-equations

8h ago Chandru1 1,481

3

votes

2

answers

93

views

Finding a clever solution to a game of chance.

combinatorics probability

8h ago Michael Ulm 398

3

votes

1

answer

75

views

Explain why calculating divergent series could cause paradox?

sequences-and-series paradox

8h ago Rasmus 1,054

3

votes

2

answers

96

views

How to calculate the number of decimal digits for a binary number?

algorithms arithmetic

9h ago Sebastian Reichelt 21

2

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1

answer

40

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Deriving Eulers Addition Theorem for Elliptic Integrals

special-functions elliptic-curves

9h ago Robin Chapman 2,976

8

votes

4

answers

384

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$(a^{n}+n ) \mid (b^{n}+n) \Longrightarrow a=b$

number-theory

9h ago Bill Dubuque 2,825

1

vote

2

answers

50

views

How to calculate the expected distribution of results using random numbers?

calculus linear-algebra random-variable

9h ago Yaroslav Bulatov 137

3

votes

1

answer

52

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Rationals of the form $\frac{p}{q}$ where $p,q$ are primes in $[a,b]$.

number-theory real-analysis analysis prime-numbers

10h ago Chandru1 1,481

6

votes

6

answers

342

views

How Do You Go About Learning Mathematics?

soft-question

10h ago user882 9

4

votes

1

answer

139

views

Proving that $||A-B||=||A+B||\Leftrightarrow AB=0$

linear-algebra homework

13h ago Agusti Roig 549

14

votes

4

answers

181

views

What is an elliptic curve, and how are they used in cryptography?

cryptography elliptic-curves

16h ago Chandru1 1,481

4

votes

4

answers

231

views

A probability game

probability

16h ago yjj 232

0

votes

1

answer

199

views

How can $n!$ be represented in terms of $2^{n}$? [closed]

algebra-precalculus functions

17h ago Pete L. Clark 2,341

0

votes

2

answers

46

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Bezier curves algorithm complex yet simple

geometry algorithms bezier-curve

21h ago yasmar 1

3

votes

1

answer

47

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Proving that Ring of Complex Entire functions is neither Artinian nor Noetherian.

analysis abstract-algebra complex-analysis

21h ago Jonas Meyer 177

1

vote

1

answer

26

views

What are good resources for learning predicate logic / predicate predicate calculus?

logic

21h ago AD. 131

7

votes

2

answers

272

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Why are the only numbers $m$ for which $n^{m+1}\equiv n \pmod{m}$ is true also unique for $\displaystyle\sum_{n=1}^{m}{n^m}\equiv 1 \bmod m$?

number-theory modular-arithmetic

22h ago Isaac♦ 3,783

3

votes

3

answers

188

views

Finding the Units in the Ring $\mathbb{Z}[t][\sqrt{t^{2}-1}]$

number-theory abstract-algebra rings

22h ago Isaac♦ 3,783

1

vote

3

answers

104

views

Let $p$ be a prime, then does $p^{\alpha} \mid |G| \Longrightarrow p \mid Aut(G)$?

abstract-algebra group-theory

22h ago Isaac♦ 3,783

1

vote

1

answer

81

views

Relation between “harmonic form” and fourier series?

algebra-precalculus trigonometry fourier-series

22h ago Isaac♦ 3,783

4

votes

0

answers

43

views

Do cokernels in RingSpc automatically lead to descent?

algebraic-geometry descent

22h ago Akhil Mathew 3,153

2

votes

1

answer

33

views

Role of orthonormal basis for: Linear functional on a finite dimensional inner product space is 'inner product with a fixed vector in the space'

linear-algebra

1d ago Jim Belk 36

2

votes

2

answers

47

views

Continuous coloring of a Mandelbrot fractal

algorithms fractals

1d ago J. M. 1,405

1

vote

1

answer

64

views

Sum of divisors and prime numbers, short proof

number-theory

1d ago Chandru1 1,481

3

votes

2

answers

220

views

Is a prime number still a prime when in a different base?

prime-numbers

1d ago Bill Dubuque 2,825

3

votes

1

answer

73

views

Is there a (deep) relationship between these various applications of the exponential function?

probability-theory fourier-series lie-groups

1d ago Dario 353

6

votes

4

answers

227

views

Expressing $\sin(2x)$ as a polynomial of $\sin{x}$

real-analysis analysis trigonometry

1d ago Robin Chapman 2,976

3

votes

0

answers

57

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How to solve DE that relate values of derivatives at different points?

differential-equations functional-equations

1d ago Chao Xu 751

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