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On the spectralization of affine and perfectly normal spaces

  • Marek Golasiński ORCID logo EMAIL logo and Paweł Bilski
Published/Copyright: October 5, 2018
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Abstract

We show that for a field K and n1, the soberification 𝒮(𝔸n(K)) of the affine n-space 𝔸n(K) over K is homeomorphic to its spectralization 𝒮(𝔸n(K)), and it can be embedded into the spectrum Spec(K[X1,,Xn]). Moreover, if the field K is algebraically closed, then there are homeomorphisms 𝒮(𝔸n(K))𝒮(𝔸n(K))Spec(K[X1,,Xn]). We also show that for a space X, the subspace zSpec(C(X))Spec(C(X)) of prime z-ideals of the ring C(X) of real-valued continuous functions on X is homeomorphic to the space z𝒮(X) of prime z-filters with an appropriate topology and there is a homeomorphism 𝒮(X)zSpec(C(X)) provided X is perfectly normal.


Dedicated to Tornike Kadeishvili for his 70th anniversary


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Received: 2017-07-12
Accepted: 2018-05-29
Published Online: 2018-10-05
Published in Print: 2018-12-01

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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