Abstract
In this article we survey recent results concerning the set of prime ideals in two-dimensional Noetherian integral domains of polynomials and power series. We include a new result that is related to current work of the authors [Celikbas et al., Prime Ideals in Quotients of Mixed Polynomial-Power Series Rings; see http://www.math.unl.edu/~swiegand1 (preprint)]: Theorem 5.4 gives a general description of the prime spectra of the rings \(R[\![x,y]\!]/P,R[\![x]\!][y]/Q\) and R[y][[x]]∕Q′, where x and y are indeterminates over a one-dimensional Noetherian integral domain R and P, Q, and Q′ are height-one prime ideals of R[[x, y]], R[[x]][y], and R[y][[x]], respectively. We also include in this survey recent results of Eubanks-Turner, Luckas, and Saydam describing prime spectra of simple birational extensions R[[x]][f(x)∕g(x)] of R[[x]], where f(x) and g(x) are power series in R[[x]] such that f(x) ≠ 0 and is a prime ideal of R[[x]][y]—this is a special case of Theorem 5.4. We give some examples of prime spectra of homomorphic images of mixed power series rings when the coefficient ring R is the ring of integers \(\mathbb{Z}\) or a Henselian domain.
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Notes
- 1.
For the definition of “excellent ring” see [15, p. 260]. Basically “excellence” means the ring is catenary and has other nice properties that polynomial rings over a field possess.
- 2.
Essentially a “Henselian” ring is one that satisfies Hensel’s Lemma; see the definition in [20].
- 3.
Since axiom II 0 holds, this axiom could be stated here without saying “v is not maximal.”
- 4.
The term “Le (T)” is defined in Notation 2.1.
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Celikbas, E., Eubanks-Turner, C., Wiegand, S. (2014). Prime Ideals in Polynomial and Power Series Rings over Noetherian Domains. In: Fontana, M., Frisch, S., Glaz, S. (eds) Commutative Algebra. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-0925-4_4
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