Question

Exercise 2.6.1 of Howie's "Fundamentals of Semigroup Theory".

score 340 · Answer 1 · 2026-02-23 13:45:54

340

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Exercise 2.6.1 of Howie's "Fundamentals of Semigroup Theory".

Published on 23 Feb 2026 - 13:45

score 149 · Answer 2 · 2026-02-23 13:47:29

149

Views

Deducing a lattice is modular.

Published on 23 Feb 2026 - 13:47

score 139 · Answer 3 · 2026-02-23 13:45:59

139

Views

The direct product $G\times E$ of a group $G$ with a right zero semigroup $E$ is a right group.

Published on 23 Feb 2026 - 13:45

score 438 · Answer 4 · 2026-02-23 13:45:00

438

Views

A right group is the direct product of a group and a right zero semigroup.

Published on 23 Feb 2026 - 13:45

score 126 · Answer 5 · 2026-02-23 13:44:27

126

Views

Are all additionlike operations on $\mathbb{R}$ of this form?

Published on 23 Feb 2026 - 13:44

score 191 · Answer 6 · 2026-02-23 13:44:27

191

Views

What kind of group-like object is this?

Published on 23 Feb 2026 - 13:44

score 112 · Answer 7 · 2026-02-23 13:46:15

112

Views

Name for the property of “being a Cartesian product of arbitrary sets”

Published on 23 Feb 2026 - 13:46

score 35 · Answer 8 · 2026-02-23 13:46:00

35

Views

Showing properties of a set of functions

Published on 23 Feb 2026 - 13:46

score 60 · Answer 9 · 2026-02-23 13:46:00

60

Views

Idempotent that isn't any of these

Published on 23 Feb 2026 - 13:46

score 137 · Answer 10 · 2026-02-23 13:45:57

137

Views

Does the existence of only right neutral mean that there can only exist right inverse?

Published on 23 Feb 2026 - 13:45

score 135 · Answer 11 · 2026-02-23 13:44:32

135

Views

Sufficient condition for a magma to be a topological magma

Published on 23 Feb 2026 - 13:44

score 803 · Answer 12 · 2026-02-23 13:46:23

803

Views

how to use magma to find the rank of the elliptic curve

Published on 23 Feb 2026 - 13:46

score 43 · Answer 13 · 2026-02-23 13:45:54

43

Views

"Compact" formula for counting all products of $x_1,\ldots,x_n$(in that order)?

Published on 23 Feb 2026 - 13:45

score 199 · Answer 14 · 2026-02-23 13:44:40

199

Views

Group Theory For an algebraic system, how to prove the following?

Published on 23 Feb 2026 - 13:44

score 367 · Answer 15 · 2026-02-23 13:46:55

367

Views

Properties of finite magmas $(S,\cdot)$ with $\forall(x,y,z)\in S^3, x\cdot(y\cdot z)=y\cdot(x\cdot z)$?

Published on 23 Feb 2026 - 13:46

List Question

Exercise 2.6.1 of Howie's "Fundamentals of Semigroup Theory".

Deducing a lattice is modular.

The direct product $G\times E$ of a group $G$ with a right zero semigroup $E$ is a right group.

A right group is the direct product of a group and a right zero semigroup.

Are all additionlike operations on $\mathbb{R}$ of this form?

What kind of group-like object is this?

Name for the property of “being a Cartesian product of arbitrary sets”

Showing properties of a set of functions

Idempotent that isn't any of these

Does the existence of only right neutral mean that there can only exist right inverse?

Sufficient condition for a magma to be a topological magma

how to use magma to find the rank of the elliptic curve

"Compact" formula for counting all products of $x_1,\ldots,x_n$(in that order)?

Group Theory For an algebraic system, how to prove the following?

Properties of finite magmas $(S,\cdot)$ with $\forall(x,y,z)\in S^3, x\cdot(y\cdot z)=y\cdot(x\cdot z)$?

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