Tate algebra
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In rigid analysis, a branch of mathematics, the Tate algebra over a complete ultrametric field k, named for John Tate, is the subring R of the formal power series ring consisting of such that as . The maximal spectrum of R is then a rigid-analytic space.
Define the Gauss norm of in R by
This makes R a Banach k-algebra.
References
- http://math.stanford.edu/~conrad/papers/aws.pdf
- http://www-math.mit.edu/~kedlaya/18.727/tate-algebras.pdf