7KiB, 196x293, 417vp8AYizL._SY291_BO1,204,203,200_QL40_ML2_.jpg View SameGoogleiqdbSauceNAO Anonymous Sat 06 Nov 10:06:06 2021 No.13824824 ViewReplyOriginalReport Quoted By: >>13824881 What would be considered a "classic" book on proofs, kinda like how Spivak is for Calculus