User so.very.tired

26 votes

1 answer

15k views

Finding all homomorphisms between two groups - couple of questions

abstract-algebra finite-groups

asked Dec 24, 2013 at 18:43

19 votes

3 answers

15k views

Finding the centralizer of a permutation

group-theory permutations

asked Jun 19, 2014 at 20:21

13 votes

3 answers

6k views

Why does Fixed Point Iteration work?

numerical-methods fixed-point-theorems

asked Mar 21, 2014 at 19:58

11 votes

2 answers

7k views

How many elements of order $k$ are in $S_n$?

abstract-algebra combinatorics permutations symmetric-groups

asked Jan 4, 2014 at 17:04

11 votes

1 answer

13k views

The nil-radical is an intersection of all prime ideals proof

ring-theory ideals

asked Jul 7, 2014 at 19:54

8 votes

2 answers

3k views

Are all Sylow 2-subgroups in $S_4$ isomorphic to $D_4$?

abstract-algebra group-theory permutations sylow-theory

asked Jun 21, 2014 at 10:26

7 votes

2 answers

430 views

Propositional Logic: Proof involving only the symbols $\{\rightarrow,F \}$

logic propositional-calculus

asked Apr 23, 2015 at 23:34

6 votes

1 answer

1k views

Linear representation of a free group

abstract-algebra group-theory free-groups

asked Jul 9, 2014 at 7:45

4 votes

2 answers

364 views

Combinatorics problem involving a regular expression

combinatorics regular-expressions

asked Nov 3, 2014 at 10:28

4 votes

1 answer

3k views

Defining equality function between booleans in lambda calculus

lambda-calculus

asked Dec 6, 2014 at 10:38

4 votes

1 answer

1k views

Calculating Nash equilibrium in mixed strategy in a game where a Nash equilibrium in pure strategy exists

game-theory nash-equilibrium

asked Jan 21, 2015 at 13:04

4 votes

1 answer

1k views

Group exponent properties

abstract-algebra group-theory finite-groups

asked Jan 24, 2014 at 14:28

4 votes

2 answers

2k views

Proving that a map between quotient groups is injective

group-theory normal-subgroups

asked Dec 30, 2013 at 15:54

3 votes

2 answers

3k views

Finding the third moment of a random variable

probability random-variables

asked Dec 29, 2013 at 23:55

3 votes

1 answer

59 views

Help with probability question

probability conditional-probability

asked Dec 7, 2013 at 23:18

3 votes

2 answers

784 views

Proving that infinite union of simple groups is also simple group

abstract-algebra group-theory simple-groups

asked Dec 9, 2013 at 0:18

3 votes

1 answer

306 views

Exponent of a group and abelian groups

group-theory

asked Jan 15, 2014 at 13:40

3 votes

2 answers

681 views

Proving two groups are isomorphic.

group-theory

asked Jan 25, 2014 at 12:50

3 votes

3 answers

25k views

When does the Newton Raphson method fail?

numerical-methods approximation newton-raphson

asked Mar 25, 2014 at 16:50

3 votes

2 answers

791 views

Jacobson radical in $A[x]$ where $A$ is a ring.

abstract-algebra ring-theory

asked Jul 9, 2014 at 12:42

3 votes

1 answer

783 views

How to spline together Bezier curves to form a smoth closed curve?

interpolation bezier-curve

asked May 20, 2015 at 17:49

3 votes

1 answer

67 views

Clarification regarding linear transformation from $\mathbb{R}^{2\times 2}$ to $\mathbb{R}^{2\times 2}$

matrices linear-transformations

asked May 30, 2015 at 15:12

2 votes

1 answer

4k views

B-Spline: How to generate a closed curve using Uniform B-Spline curve?

interpolation spline

asked May 24, 2015 at 17:26

2 votes

2 answers

583 views

Finding the area of a triangle, given the distance between center of incircle and circumscribed circle

geometry triangles area

asked Dec 31, 2014 at 15:38

2 votes

2 answers

270 views

How to prove equality between two sets contained in union of another two disjoint sets?

elementary-set-theory

asked Jan 3, 2015 at 23:15

2 votes

2 answers

1k views

Proof: Every normal subgroup has corresponding Congruence relation and vice versa

abstract-algebra group-theory normal-subgroups congruence-relations

asked Jul 5, 2014 at 19:27

2 votes

2 answers

85 views

Normal groups: Abstract question about abstract algebra.

group-theory soft-question normal-subgroups

asked May 31, 2014 at 9:27

2 votes

1 answer

2k views

Finding the joint distribution of two random variables

probability

asked Feb 8, 2014 at 21:09

2 votes

3 answers

2k views

What makes a floating point number finite?

binary floating-point

asked Mar 1, 2014 at 12:37

2 votes

1 answer

479 views

How is "Condition Number" different from derivative? (Numerical analysis)

numerical-methods

asked Mar 9, 2014 at 17:10

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60 Questions

Finding all homomorphisms between two groups - couple of questions

Finding the centralizer of a permutation

Why does Fixed Point Iteration work?

How many elements of order $k$ are in $S_n$?

The nil-radical is an intersection of all prime ideals proof

Are all Sylow 2-subgroups in $S_4$ isomorphic to $D_4$?

Propositional Logic: Proof involving only the symbols $\{\rightarrow,F \}$

Linear representation of a free group

Combinatorics problem involving a regular expression

Defining equality function between booleans in lambda calculus

Calculating Nash equilibrium in mixed strategy in a game where a Nash equilibrium in pure strategy exists

Group exponent properties

Proving that a map between quotient groups is injective

Finding the third moment of a random variable

Help with probability question

Proving that infinite union of simple groups is also simple group

Exponent of a group and abelian groups

Proving two groups are isomorphic.

When does the Newton Raphson method fail?

Jacobson radical in $A[x]$ where $A$ is a ring.

How to spline together Bezier curves to form a smoth closed curve?

Clarification regarding linear transformation from $\mathbb{R}^{2\times 2}$ to $\mathbb{R}^{2\times 2}$

B-Spline: How to generate a closed curve using Uniform B-Spline curve?

Finding the area of a triangle, given the distance between center of incircle and circumscribed circle

How to prove equality between two sets contained in union of another two disjoint sets?

Proof: Every normal subgroup has corresponding Congruence relation and vice versa

Normal groups: Abstract question about abstract algebra.

Finding the joint distribution of two random variables

What makes a floating point number finite?

How is "Condition Number" different from derivative? (Numerical analysis)