User joriki

331 votes

Accepted

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

answered Mar 28, 2011 at 8:17

134 votes

Accepted

Could someone explain conditional independence?

probability independence

answered Feb 21, 2011 at 18:26

133 votes

Deleting any digit yields a prime... is there a name for this?

elementary-number-theory prime-numbers recreational-mathematics

answered Apr 16, 2011 at 12:27

122 votes

Accepted

What's the largest possible volume of a taco, and how do I make one that big?

differential-geometry multivariable-calculus optimization recreational-mathematics calculus-of-variations

answered Dec 16, 2011 at 21:41

100 votes

Accepted

"Gaps" or "holes" in rational number system

real-analysis analysis rational-numbers

answered Apr 29, 2020 at 16:09

93 votes

Accepted

Volume of Region in 5D Space

geometry multivariable-calculus

answered Jul 14, 2011 at 9:23

88 votes

Multiple-choice question about the probability of a random answer to itself being correct

probability

answered Oct 27, 2011 at 22:42

70 votes

What are the Axiom of Choice and Axiom of Determinacy?

set-theory intuition axiom-of-choice

answered Jul 20, 2011 at 9:50

58 votes

Accepted

How many 7-note musical scales are possible within the 12-note system?

combinatorics permutations combinations music-theory

answered Jun 3, 2016 at 0:33

56 votes

Accepted

How to get the aspect ratio of an image?

arithmetic

answered Aug 9, 2012 at 19:35

55 votes

What is wrong in my proof that 90 = 95? Or is it correct?

geometry euclidean-geometry fake-proofs

answered Jul 9, 2011 at 14:44

54 votes

Accepted

how does expectation maximization work?

statistics

answered Mar 5, 2011 at 9:26

53 votes

Is it possible for a function to be in $L^p$ for only one $p$?

real-analysis measure-theory functional-analysis banach-spaces examples-counterexamples

answered Aug 2, 2011 at 18:53

51 votes

Accepted

For which number does multiplying it by 99 add a 1 to each end of its decimal representation?

recreational-mathematics

answered Apr 5, 2011 at 11:06

40 votes

Accepted

Is that true that all the prime numbers are of the form $6m \pm 1$?

elementary-number-theory prime-numbers

answered May 27, 2011 at 10:02

40 votes

Accepted

Best Fitting Plane given a Set of Points

linear-algebra

answered Jan 15, 2012 at 17:35

40 votes

What is the maximum volume that can be contained by a sheet of paper?

geometry optimization recreational-mathematics volume

answered Jul 18, 2018 at 22:12

40 votes

Examples of patterns that eventually fail

big-list examples-counterexamples

answered May 13, 2016 at 14:31

39 votes

Determinant of a block lower triangular matrix

linear-algebra matrices determinant block-matrices

answered Oct 24, 2011 at 11:20

36 votes

Accepted

Group of positive rationals under multiplication not isomorphic to group of rationals

group-theory abelian-groups group-isomorphism

answered Apr 18, 2011 at 9:04

36 votes

Accepted

Gradient descent with constraints

optimization numerical-methods numerical-optimization gradient-descent

answered Aug 1, 2011 at 5:16

35 votes

Accepted

Probability distribution in the coupon collector's problem

probability combinatorics coupon-collector

answered Sep 28, 2015 at 8:16

33 votes

Accepted

Generate a random direction within a cone

geometry random

answered Oct 1, 2012 at 20:08

32 votes

Has any previously unknown result been proven by an automated theorem prover?

soft-question big-list automated-theorem-proving

answered Aug 10, 2012 at 11:06

32 votes

Accepted

"Casual" mathematical facts with practical consequences

soft-question applications

answered May 25, 2011 at 15:08

32 votes

Is Lagrange's theorem the most basic result in finite group theory?

abstract-algebra group-theory education

answered May 10, 2011 at 20:41

32 votes

Accepted

Does a closed and bounded set in $\mathbb{R}$ necessarily contain its supremum and infimum?

real-analysis general-topology

answered Oct 25, 2011 at 2:59

32 votes

Accepted

Four coins with reflip problem?

probability conditional-expectation conditional-probability expected-value

answered Sep 19, 2018 at 7:33

31 votes

Accepted

How does Elo rating scale with games played?

probability mathematical-modeling

answered May 11, 2020 at 7:04

31 votes

Accepted

What is the analogue of spherical coordinates in $n$-dimensions?

geometry analytic-geometry coordinate-systems spherical-coordinates spheres

answered Aug 9, 2011 at 19:23

Stack Exchange Network

current community

your communities

more stack exchange communities

5,648 Answers

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

Could someone explain conditional independence?

Deleting any digit yields a prime... is there a name for this?

What's the largest possible volume of a taco, and how do I make one that big?

"Gaps" or "holes" in rational number system

Volume of Region in 5D Space

Multiple-choice question about the probability of a random answer to itself being correct

What are the Axiom of Choice and Axiom of Determinacy?

How many 7-note musical scales are possible within the 12-note system?

How to get the aspect ratio of an image?

What is wrong in my proof that 90 = 95? Or is it correct?

how does expectation maximization work?

Is it possible for a function to be in $L^p$ for only one $p$?

For which number does multiplying it by 99 add a 1 to each end of its decimal representation?

Is that true that all the prime numbers are of the form $6m \pm 1$?

Best Fitting Plane given a Set of Points

What is the maximum volume that can be contained by a sheet of paper?

Examples of patterns that eventually fail

Determinant of a block lower triangular matrix

Group of positive rationals under multiplication not isomorphic to group of rationals

Gradient descent with constraints

Probability distribution in the coupon collector's problem

Generate a random direction within a cone

Has any previously unknown result been proven by an automated theorem prover?

"Casual" mathematical facts with practical consequences

Is Lagrange's theorem the most basic result in finite group theory?

Does a closed and bounded set in $\mathbb{R}$ necessarily contain its supremum and infimum?

Four coins with reflip problem?

How does Elo rating scale with games played?

What is the analogue of spherical coordinates in $n$-dimensions?