3×3引理的推广及其应用

GENERALIZATION AND APPLICATION OF 3×3 LEMMA

将Ａｂｅｌ范畴中的３×３引理推广到３×３×３引理。

This paper extends 3×3 lemma in an Abel category to 3×3×3 lemma. Furthermore, using 3×3×3 lemma it gives a series of formulas concerned in the rank of matrices over p division rings.