Regularity and intersections of bracket powers

Neil Epstein

Czechoslovak Mathematical Journal (2022)

  • Volume: 72, Issue: 2, page 593-599
  • ISSN: 0011-4642

Abstract

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Among reduced Noetherian prime characteristic commutative rings, we prove that a regular ring is precisely that where the finite intersection of ideals commutes with taking bracket powers. However, reducedness is essential for this equivalence. Connections are made with Ohm-Rush content theory, intersection-flatness of the Frobenius map, and various flatness criteria.

How to cite

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Epstein, Neil. "Regularity and intersections of bracket powers." Czechoslovak Mathematical Journal 72.2 (2022): 593-599. <http://eudml.org/doc/298305>.

@article{Epstein2022,
abstract = {Among reduced Noetherian prime characteristic commutative rings, we prove that a regular ring is precisely that where the finite intersection of ideals commutes with taking bracket powers. However, reducedness is essential for this equivalence. Connections are made with Ohm-Rush content theory, intersection-flatness of the Frobenius map, and various flatness criteria.},
author = {Epstein, Neil},
journal = {Czechoslovak Mathematical Journal},
keywords = {regular ring; Ohm-Rush content theory; intersection flat; bracket power; Frobenius endomorphism},
language = {eng},
number = {2},
pages = {593-599},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Regularity and intersections of bracket powers},
url = {http://eudml.org/doc/298305},
volume = {72},
year = {2022},
}

TY - JOUR
AU - Epstein, Neil
TI - Regularity and intersections of bracket powers
JO - Czechoslovak Mathematical Journal
PY - 2022
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 72
IS - 2
SP - 593
EP - 599
AB - Among reduced Noetherian prime characteristic commutative rings, we prove that a regular ring is precisely that where the finite intersection of ideals commutes with taking bracket powers. However, reducedness is essential for this equivalence. Connections are made with Ohm-Rush content theory, intersection-flatness of the Frobenius map, and various flatness criteria.
LA - eng
KW - regular ring; Ohm-Rush content theory; intersection flat; bracket power; Frobenius endomorphism
UR - http://eudml.org/doc/298305
ER -

References

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  10. Ohm, J., Rush, D. E., 10.7146/math.scand.a-11411, Math. Scand. 31 (1972), 49-68. (1972) Zbl0248.13013MR0344289DOI10.7146/math.scand.a-11411
  11. Sharp, R. Y., 10.1016/j.jalgebra.2011.08.009, J. Algebra 349 (2012), 284-316. (2012) Zbl1256.13004MR2853638DOI10.1016/j.jalgebra.2011.08.009
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