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arXiv · 2402.06028

Iwasawa $\lambda$ invariant and Massey product

Peikai Qi
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Abstract

We compute Iwasawa $\lambda$ 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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Peikai Qi. 2024-02-08. Iwasawa $\lambda$ invariant and Massey product. https://arxiv.org/abs/2402.06028

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