Iwasawa λ invariant and Massey product

2024/02/08 by Qi, Peikai
#FOS: Mathematics #Number Theory (math.NT)

paper · doi:10.48550/arxiv.2402.06028

Abstract

We compute Iwasawa λ invariant in terms of Massey products in Galois cohomology with restricted ramification. When applied to imaginary quadratic fields and cyclotomic fields, we obtain a new proof and generalization of results of Gold and McCallum-Sharifi. The main tool is the generalized Bockstein map introduced by Lam-Liu-Sharifi-Wake-Wang.

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