User NebulousReveal

85 votes

What is a good complex analysis textbook, barring Ahlfors's?

answered Apr 3, 2011 at 22:47

42 votes

Accepted

How to find a basis for the intersection of two vector spaces in $\mathbb{R}^n$?

linear-algebra vector-spaces

answered Mar 6, 2011 at 22:03

36 votes

Accepted

A linear operator commuting with all such operators is a scalar multiple of the identity.

linear-algebra vector-spaces self-learning

answered Mar 18, 2011 at 15:19

35 votes

What is the best book to learn probability?

probability probability-theory reference-request

answered Apr 9, 2011 at 3:03

23 votes

Accepted

When is a function satisfying the Cauchy-Riemann equations holomorphic?

complex-analysis

answered Dec 30, 2010 at 2:15

21 votes

Accepted

Sum of rational numbers

number-theory irrational-numbers

answered Dec 24, 2010 at 22:56

18 votes

Probability density function vs. probability mass function

probability probability-theory probability-distributions terminology

answered Feb 22, 2011 at 23:27

16 votes

Why are all homogenous systems consistent?

linear-algebra

answered Jan 13, 2011 at 17:31

12 votes

How to find the inverse modulo $m$?

elementary-number-theory modular-arithmetic inverse

answered Mar 6, 2011 at 23:37

11 votes

Accepted

Sum of independent Binomial random variables with different probabilities

probability-distributions random

answered Mar 30, 2011 at 19:40

11 votes

Why should we care about groups at all?

group-theory soft-question

answered Jan 28, 2011 at 3:07

10 votes

Recommendation on stochastic process books

reference-request stochastic-processes

answered Feb 7, 2011 at 23:08

9 votes

Accepted

Self-study resources for basic probability?

probability reference-request self-learning

answered Jan 15, 2011 at 21:15

9 votes

Inclusion-exclusion principle: Number of integer solutions to equations

number-theory discrete-mathematics inclusion-exclusion

answered Apr 24, 2011 at 15:34

8 votes

small o(1) notation

analysis limits

answered Mar 26, 2011 at 6:12

8 votes

Are Singleton sets in $\mathbb{R}$ both closed and open?

general-topology

answered Jan 16, 2011 at 3:27

7 votes

Show for prime numbers of the form $p=4n+1$, $x=(2n)!$ solves the congruence $x^2\equiv-1 \pmod p$. $p$ is therefore not a gaussian prime.

elementary-number-theory prime-numbers congruences

answered Jan 3, 2011 at 8:05

7 votes

Accepted

Meaning of $C(I,\mathbb{R})$ and $C^{\infty}(I, \mathbb{R})$ related to continuous functions

analysis functions notation

answered Jan 11, 2011 at 14:52

7 votes

Accepted

Some maps of the land of mathematics?

reference-request education

answered Jan 19, 2011 at 21:59

7 votes

Accepted

Second Order DE's

ordinary-differential-equations

answered Apr 4, 2011 at 4:19

7 votes

Accepted

Is there experimental evidence that people ever play mixed Nash equilibrium in real games?

game-theory nash-equilibrium

answered Apr 13, 2011 at 18:32

7 votes

Conditional probability

probability

answered May 24, 2011 at 18:35

7 votes

Proof That $\mathbb{R} \setminus \mathbb{Q}$ Is Not an $F_{\sigma}$ Set

real-analysis baire-category

answered Mar 11, 2011 at 3:37

6 votes

How is $Ax + By = C$ the equation of a straight line?

algebra-precalculus

answered Mar 14, 2011 at 1:59

6 votes

Accepted

How long is side $a$ in this right triangle if $a = b$, given $c$?

algebra-precalculus triangles

answered Mar 15, 2011 at 1:24

6 votes

What math should a computer scientist take in college?

computer-science

answered Jan 17, 2011 at 16:30

6 votes

Accepted

Havel & Hakimi degree sequence theory

graph-theory

answered Feb 3, 2011 at 16:53

6 votes

How to show that every Boolean ring is commutative?

abstract-algebra ring-theory idempotents

answered Nov 14, 2010 at 18:53

6 votes

Integrate Form $du / (a^2 + u^2)^{3/2}$

integration

answered Jan 16, 2011 at 7:50

5 votes

Cycles in $k$-connected graphs

graph-theory

answered Jan 5, 2011 at 20:43

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263 Answers

What is a good complex analysis textbook, barring Ahlfors's?

How to find a basis for the intersection of two vector spaces in $\mathbb{R}^n$?

A linear operator commuting with all such operators is a scalar multiple of the identity.

What is the best book to learn probability?

When is a function satisfying the Cauchy-Riemann equations holomorphic?

Sum of rational numbers

Probability density function vs. probability mass function

Why are all homogenous systems consistent?

How to find the inverse modulo $m$?

Sum of independent Binomial random variables with different probabilities

Why should we care about groups at all?

Recommendation on stochastic process books

Self-study resources for basic probability?

Inclusion-exclusion principle: Number of integer solutions to equations

small o(1) notation

Are Singleton sets in $\mathbb{R}$ both closed and open?

Show for prime numbers of the form $p=4n+1$, $x=(2n)!$ solves the congruence $x^2\equiv-1 \pmod p$. $p$ is therefore not a gaussian prime.

Meaning of $C(I,\mathbb{R})$ and $C^{\infty}(I, \mathbb{R})$ related to continuous functions

Some maps of the land of mathematics?

Second Order DE's

Is there experimental evidence that people ever play mixed Nash equilibrium in real games?

Conditional probability

Proof That $\mathbb{R} \setminus \mathbb{Q}$ Is Not an $F_{\sigma}$ Set

How is $Ax + By = C$ the equation of a straight line?

How long is side $a$ in this right triangle if $a = b$, given $c$?

What math should a computer scientist take in college?

Havel & Hakimi degree sequence theory

How to show that every Boolean ring is commutative?

Integrate Form $du / (a^2 + u^2)^{3/2}$

Cycles in $k$-connected graphs