English Exceptional isomorphism Cited by user Nbarth on 29 Jan 2010 In mathematics, an exceptional isomorphism, also called an accidental isomorphism, is an isomorphism between members ai and bj of two families (usually infinite) of…
English Projective linear group Cited by user Nbarth on 29 Jan 2010 In mathematics, especially in the group theoretic area of algebra, the projective linear group (also known as the projective general linear group or PGL) is the induced…