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Higher Math: Depth
Galois Cohomology and Duality
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2
Pontryagin duals: see Poonen's notes on Tate's thesis, for instance.
By Victor Wang
Examples of how cohomology arises, e.g. stability automorphisms that are not inner, Buzzard Selmer and Shafarevich group of a number field construction. https://math.stackexchan…
By Victor Wang
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