摘要
Let c : SU(n) → PSU(n) = SU(n)/Zn be the quotient map of the special unitary group SU(n) by its center subgroup Z_n. We determine the induced homomorphism c*: H*(PSU(n)) → H*(SU(n)) on cohomologies by computing with the prime orders of binomial coefficients.
Let c ： SU（n） → PSU（n） = SU（n）/Zn be the quotient map of the special unitary group SU（n） by its center subgroup Zn. We determine the induced homomorphism c＊ ： H＊（PSU（n）） → H＊（SU（n）） on cohomologies by computing with the prime orders of binomial coefficients.
基金
supported by National Natural Science Foundation of China(Grant Nos.11131008,11401098 and 11661131004)
National Basic Research Program of China(973 Program)(Grant No.2011CB302400)
