Show that Q+ (the set of positive rational numbers) under multiplication is not isomorphic to Q under addition.

Finite Mathematics Chapter Ten: Sets A set is collection of objects. Elements are individual members of a set. Sets are typically expressed in one of two ways. The roster method simply lists all the of the elements of a set. A = {a,e,i,o,u} SetBuilder notation provides a rule that defines the set. A = {x | x is a vowel} The symbol greek ‘e’ indicates...