141KiB, 2000x1810, 2000px-Magma_to_group2.svg.png View SameGoogleiqdbSauceNAO Anonymous Mon 20 Jan 15:49:34 2020 No.11317469 ViewReplyOriginalReport Quoted By: >>11317554 Algebra thread. Groups, rings, etc. >tfw you learn the Hamiltonian integers form a noncommutative integral domain