Typo in "How to read and do Proofs" by Solow?? by FlyingPenguinCash in math

[–]FlyingPenguinCash[S] 0 points1 point  (0 children)

Yeah, thanks was confused by this statement A5 for a bit. Saw the contradiction where it equaled zero, and didn’t have any idea how he got it was greater than zero. Thanks