Yes, I concur.
"A+y=A+z => y=z which is a contradiction"
Is this correct?
(u prolly noticed that I'm really weak in this, hence y I'm looking everywhere for answers.)
Homework Statement
Prove that the additive inverse -v of an element v in a vector space is unique.
Homework Equations
Additive Inverse in V
For each v in V, there is an element -v in V such that v + (-v) = 0.
The Attempt at a Solution
Assume that the additive inverse is not...