User scaaahu - Mathematics Stack Exchange

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	505 reputation	bio	website		visits	member for	1 year, 7 months
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0

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551

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My Moore and Mealy machines look the same. Why?

homework automata

jan 2 at 0:13 Lucius 106

35

30

votes

19

answers

5

kviews

Good book/lecture notes about category theory

dec 31 at 21:54 darij grinberg 881

142

193

votes

21

answers

17

kviews

How to study math to really understand it and have a healthy lifestyle with free time?

soft-question advice

dec 31 at 5:24 Grigor 1

1

5

votes

2

answers

105

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How do I read this question?

abstract-algebra

dec 29 at 4:16 000 2,814

15

46

votes

5

answers

1

kviews

How are mathematicians taught to write with such an expository style?

soft-question article-writing

dec 28 at 14:30 GEdgar 19.1k

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2

votes

1

answer

74

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Proving that every element of a monoid occurs exactly once

abstract-algebra group-theory monoid

dec 27 at 4:15 Alexander Gruber♦ 15.3k

2

4

votes

2

answers

136

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Looking for texts in representation theory

reference-request soft-question finite-groups representation-theory

dec 21 at 2:48 kjetil b halvorsen 884

1

4

votes

2

answers

260

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If $G \times H$ is isomorphic to $G _1\times H_1$, must $G$ be isomorphic to either $G_1$ or $H_1$?

abstract-algebra group-theory

dec 14 at 3:03 anon 40.3k

26

44

votes

6

answers

2

kviews

What made you choose your research field?

soft-question advice

dec 12 at 5:14 Kyle 1,485

1

vote

2

answers

42

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Decomposing a subgroup

group-theory

dec 7 at 2:16 Gerry Myerson 86k

1

2

votes

1

answer

108

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Determining order of G and number of generators required.

group-theory

dec 7 at 1:03 Community♦ 1

4

5

votes

3

answers

311

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An analog of the Myhill-Nerode Theorem for context-free languages?

computer-science formal-languages

dec 1 at 21:43 Dadsetani 1

2

11

votes

2

answers

237

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Prove the isomorphism of cyclic groups $C_{mn}\cong C_m\times C_n$ via categorical considerations

abstract-algebra group-theory category-theory

nov 30 at 8:28 Holdsworth88 3,470

3

6

votes

2

answers

310

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generators and relations of symmetric group

abstract-algebra

nov 29 at 21:44 Phira 12.2k

2

4

votes

1

answer

139

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Isomorphism between centralizer and semi direct product

group-theory

nov 15 at 6:05 Ewan Delanoy 8,435

2

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0

answers

46

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What are various approaches of proving that a permutation group is a subgroup of another?

finite-groups

oct 29 at 9:25 Babak S. 28k

1

vote

1

answer

141

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Proving the direct product D of two groups G & H has a normal subgroup N such that N isomorphic to G and D/N isomorphic to H

group-theory

oct 25 at 2:55 Gerry Myerson 86k

1

2

votes

2

answers

152

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Semigroup with exactly one left(right) identity?

semigroups

oct 23 at 13:22 Tara B 4,098

1

3

votes

0

answers

51

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Is every sufficiently large semigroup $S$ a subsemigroup of the transformation semigroup on $S$?

semigroups

oct 19 at 9:40 Colin McQuillan 3,062

1

vote

1

answer

92

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finite state machine is strongly connected

proof-writing automata

oct 13 at 23:27 Brian M. Scott 155k

7

12

votes

6

answers

1

kviews

What software and/or language to use to take Math lecture notes?

notation math-software

oct 3 at 1:22 Kevin Reid 467

3

7

votes

2

answers

210

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Order of a set $X$ acted upon transitively by the Symmetric Group

abstract-algebra group-theory representation-theory finite-groups symmetric-groups

sep 25 at 22:27 Conan Wong 687

1

vote

2

answers

112

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closure of direct product of two groups

group-theory

sep 13 at 8:01 Community♦ 1

3

votes

2

answers

269

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What are well-known weaknesses of CAS/math software?

soft-question computer-algebra-systems

sep 5 at 5:48 Ryan 1,541

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2

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2

answers

152

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Homomorphism induced by a transitive action is surjective?

group-theory

sep 2 at 2:34 Amitesh Datta 6,007

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3

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2

answers

86

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non-homomorphic algebras

homework abstract-algebra products

aug 28 at 12:45 Rob Arthan 461

1

2

votes

2

answers

98

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Decomposition of Permutation Group

group-theory

aug 27 at 10:59 Jyrki Lahtonen 31k

1

2

votes

1

answer

63

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Is $f$ is computable by a finite automaton, the dual of $f$ is thus computable also?

combinatorics formal-languages automata

aug 27 at 10:53 marlu 7,304

1

vote

1

answer

156

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Properties of quotient groups and group homomorphism

abstract-algebra

aug 22 at 9:04 Brian M. Scott 155k

10

46

votes

1

answer

1

kviews

How was the Monster's existence originally suspected?

abstract-algebra group-theory math-history

aug 20 at 3:39 Community♦ 1

scaaahu

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