abstract algebra - please assist with 1 and 2 and then 3, 4, 5. thanks, and by the weekend is fine, this is all for this week as i will study this for Monday exam. thanks
Intro abstract algebra - let n be an integer.
nZ is the integer under addition subgroup of Z.
Prove that nZ and Z are isomorphic
intro abstract algebra - Find 2 elements x,y; in S_3 such that :
(xy)^2 NOT= x^2y^2
Could you please write the whole method to do it, thank you