We present the Zariski spectrum as an inductively generated basic topology à la Martin-Löf and Sambin. Since we can thus get by without considering powers and radicals, this simplifies the presentation as a formal topology initiated by Sigstam. Our treatment includes closed subspaces and basic opens: that is, arbitrary quotients and singleton localisations. All the effective objects under consideration are introduced by means of inductive definitions. The notions of spatiality and reducibility are characterized for the class of Zariski formal topologies, and their nonconstructive content is pointed out: while spatiality implies classical logic, reducibility corresponds to a fragment of the Axiom of Choice in the form of Russell’s Multiplicative Axiom.
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@article{CML_2015__7_1_55_0,
author = {Rinaldi, Davide and Sambin, Giovanni and Schuster, Peter},
title = {The {Basic} {Zariski} {Topology}},
journal = {Confluentes Mathematici},
pages = {55--81},
publisher = {Institut Camille Jordan},
volume = {7},
number = {1},
year = {2015},
doi = {10.5802/cml.18},
language = {en},
url = {http://www.numdam.org/articles/10.5802/cml.18/}
}
TY - JOUR AU - Rinaldi, Davide AU - Sambin, Giovanni AU - Schuster, Peter TI - The Basic Zariski Topology JO - Confluentes Mathematici PY - 2015 SP - 55 EP - 81 VL - 7 IS - 1 PB - Institut Camille Jordan UR - http://www.numdam.org/articles/10.5802/cml.18/ DO - 10.5802/cml.18 LA - en ID - CML_2015__7_1_55_0 ER -
Rinaldi, Davide; Sambin, Giovanni; Schuster, Peter. The Basic Zariski Topology. Confluentes Mathematici, Tome 7 (2015) no. 1, pp. 55-81. doi : 10.5802/cml.18. http://www.numdam.org/articles/10.5802/cml.18/
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