Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some additive galois cohomology rings   Let p be an odd prime. We consider the cyclotomic extension T :=
Z_(p)[zeta_{p^2}] of S := Z_(p), with galois group G := (Z/p^2)^*. Since this
extension is wildly ramified, the SG-module T is not projective. We calculate
its cohomology ring H^*(G, T; S), carrying the cup product induced by the ring
structure of T. Proceeding in a somewhat greater generality, our results also
apply to certain Lubin-Tate extensions.

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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc