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math.DG2012
Mod 3 Congruence and Twisted Signature of 24 Dimensional String Manifolds
Qingtao Chen, Fei Han
In this paper, by combining modularity of the Witten genus and the modular forms constructed by Liu and Wang, we establish mod 3 congruence properties of certain twisted signatures…
math.DG2012
Anomaly Cancellation and Modularity
Fei Han, Kefeng Liu, Weiping Zhang
It has been shown that the Alvarez-Gaum-Witten miraculous anomaly cancellation formula in type IIB superstring theory and its various generalizations can be der…