Mathematics Homework Solutions

Linear independence of embeddings

Let E be a finite extension of a field F. Show that any finite set of distinct embeddings of E into the algebraic closure of F is linearly independent over F.

abstract algebra subgroup problem

let G be an abelian group. show that the set of all elements of G of finite order forms a subgroup of G.

proving or disproving a group problem

prove or disprove, If G is a group in which every proper subgroup is cyclic, then G is cyclic.

abelian groups

show that a abelian group must have five distinct elements

subgroup problem

show that {(1), (1,2)(3,4), (1,3)(2,4), (1,4)(2,3)} is a subgroup of S4 (Ssub4)

show a matrice operation is a subgroup of G

Let G = GLsub2 (R). a) show that T = {[a b] ad not equal to 0} is a subgroup of G {[0 d] } b) Show that D = {[a 0] ad not equal to 0} is a subgroup of G {[0 d]

reposting a problem because I made a typo in the 2nd art of the ? abelian subgroup

et G be an agelian group such that the operation on G is denoted additively. Show that {a is an element of G| 2a = 0} os a subgroup of G. Compute the subgroup for G =13. The typo is: Compute the subgroup for G =13. It should be Compute the subgroup for G = Z sub 12

group equivalence relation, alpha, beta, sigma

For alpha, beta an element in S sub n, let alph a~ beta if there exists sigma is an element of S sub n such that sigma alpha sigma inverse = beta. Show that ~ is an equivalence relation on S sub n I hope this is understandabe

determining if a group using axioms

define * on Z by a * b = max{a,b}

defining a group using axioms

define * on Z by a * b = labl

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