monkeyman192
simply bored
Started at uni today...math was a nightmare. Apparently the elements of the empty set can be both orange and not orange, and for homework I'm supposed to prove that there is only one 0.
for any group there is only one 0 element. so if you consider the real numbers as a group under addition you can use the axioms of a group and assume that there are 2 0's to show that they would both have to be the same 0, thus only one 0