User user50229 - Mathematics Stack Exchange

bio	website
	location
	age
visits	member for	7 months
	seen	9 hours ago
stats	profile views	38

	502 reputation	bio	website		visits	member for	7 months
213 badges		location			seen	9 hours ago

7

votes

2

answers

461

views

Calculating the total number of surjective functions

combinatorics functions

dec 25 at 2:15 hardmath 7,224

7

votes

3

answers

163

views

Analogy between “One and only one” and “If and only if”

logic terminology

nov 30 at 17:32 lhf 36.1k

1

6

votes

3

answers

223

views

Diophantine equation $x^2 + 32x = y^3$

number-theory diophantine-equations elliptic-curves

apr 1 at 18:48 Paolo Leonetti 161

1

5

votes

2

answers

146

views

Are algebraic numbers analogous to group elements with finite order?

abstract-algebra group-theory soft-question algebraic-number-theory

may 5 at 15:36 user50229 502

1

5

votes

3

answers

43

views

Adding edges to a forest from another forest in the same graph

graph-theory

mar 10 at 13:57 joriki 93.6k

2

4

votes

2

answers

159

views

Group actions, permutation representations and currying

abstract-algebra

nov 22 at 17:27 ineff 2,323

3

votes

3

answers

131

views

Algebra terminology: stable

abstract-algebra terminology

feb 10 at 20:55 Fly by Night 6,340

3

votes

2

answers

63

views

Terminology: Linear 'programming'

terminology linear-programming

jan 23 at 21:27 Learner 3,349

1

3

votes

1

answer

68

views

Chief series of a group

homework group-theory finite-groups

jan 20 at 20:34 Ted 7,939

1

3

votes

2

answers

105

views

Original papers on the subject of group actions

abstract-algebra group-theory reference-request notation group-actions

dec 17 at 17:19 user50229 502

1

2

votes

2

answers

66

views

Group generated by a set of normal subgroups is normal

abstract-algebra group-theory

1d ago Jack Schmidt 23.1k

2

votes

2

answers

59

views

Intersection of conjugate subgroups is normal

abstract-algebra group-theory

may 3 at 13:10 julien 25.7k

2

votes

2

answers

92

views

Associativity with one operation or two (or more) operations

abstract-algebra terminology definition

apr 13 at 23:30 user50229 502

2

votes

2

answers

102

views

Roots of unity in $\mathbb{Q}(\zeta_p)$ for $p$ an odd prime

abstract-algebra number-theory field-theory algebraic-number-theory

apr 9 at 12:15 user50229 502

2

votes

1

answer

116

views

If $x^p +y^p = z^p$ and $xyz \neq 0$, then $p$ divides $x$ or $y$ or $z$?

abstract-algebra number-theory algebraic-number-theory diophantine-equations

apr 9 at 9:54 QiL'8 15.2k

2

votes

1

answer

79

views

Law of composition

abstract-algebra terminology

jan 25 at 15:56 Andreas Blass 9,757

2

votes

2

answers

88

views

Exponent of a direct product of cyclic groups

homework abstract-algebra group-theory finite-groups

jan 20 at 21:00 amWhy 61.8k

1

vote

1

answer

49

views

$P \cap N$ is a Sylow $p$-subgroup of $N$, where $N$ is normal in $G$ and $P$ is a Sylow $p$-subgroup of $G$?

abstract-algebra group-theory finite-groups definition sylow-theory

jun 2 at 0:54 Alexander Gruber♦ 15.8k

1

vote

3

answers

72

views

Way to show $x^n + y^n = z^n$ factorises as $(x + y)(x + \zeta y) \cdots (x + \zeta^{n-1}y) = z^n$

polynomials algebraic-number-theory diophantine-equations factoring roots-of-unity

may 2 at 15:53 Warren Moore 2,437

1

vote

1

answer

97

views

Definition of correspondence

functions terminology definition relations

apr 28 at 15:24 user50229 502

1

vote

2

answers

108

views

Why are expressions such as $\operatorname{ln}(T)$ used in thermodynamics where $T$ is not dimensionless?

logarithms physics

dec 31 at 16:06 Andreas Blass 9,757

1

vote

1

answer

43

views

Definition of tautological action

group-theory terminology semigroups group-actions

dec 7 at 23:03 Qiaochu Yuan 121k

0

votes

2

answers

148

views

Automorphism groups and symmetric groups

abstract-algebra group-theory terminology

nov 23 at 16:42 Hagen von Eitzen 47.4k

user50229

23 Questions