I was reading the article/wiki here When I came across this quote
2+2=4 for most people
Those with higher mathematical knowledge may disagree - not in the Z3 algebraic group. No, 2+2 is still 4 in Z3, it just also happens that 4=1. But this is really insignificant, since 4 is usually defined to be 2+2 or 3+1.
Could someone give me a rough idea for a layman what this person meant when they said that 2+2 != 4 in the Z3 algebraic group?
I'd like to understand the reference some so I can use it one day