This is a coherent explanation for the existence of the 26 known sporadic simple groups originally arising from many unrelated contexts. The given proofs build on the intimate relations between general group theory, ordinary character theory, modular representation theory and algorithmic algebra described in the first volume. Это и многое другое вы найдете в книге Theory of Finite Simple Groups II: Commentary on the Classification Problems (New Mathematical Monographs) (Gerhard Michler)