Property: J-0

Definition: the set of regular points of the spectrum contains a non-empty open subset

Reference(s):

(No citations retrieved.)

Metaproperties:

This property does not have the following metaproperties
Rings
Name
$\mathbb A_\mathbb Q$: the ring of adeles of $\mathbb Q$
$\mathbb Q[\mathbb Q]$
$\mathbb Q[x,y,z]/(xz,yz)$
$\mathbb Q[x,y]/(x^2-y^3)$
$\mathbb Q[x,y]_{(x,y)}/(x^2-y^3)$
$\mathbb Q[x^{1/2},x^{1/4},x^{1/8},...]/(x)$
$\mathbb R[X,Y,Z]/(X^2+Y^2+Z^2-1)$
$\mathbb R[x_1, x_2,x_3,\ldots]$
$\mathbb Z+x\mathbb Q[x]$
$\mathbb Z/(n)$, $n$ divisible by two primes and a square
$\mathbb Z[x_0, x_1,x_2,\ldots]$
$\prod_{i=0}^\infty \mathbb Q$
$\prod_{i=1}^\infty \mathbb Q[[X,Y]]$
$\prod_{i=1}^\infty \mathbb Z/(2^i)$
$\prod_{i=1}^\infty F_2$
$\varinjlim \mathbb Q^{2^n}$
$\widehat{\mathbb Z}$: the profinite completion of the integers
$C([0,1])$, the ring of continuous real-valued functions on the unit interval
$C^\infty_0(\mathbb R)$: the ring of germs of smooth functions on $\mathbb R$ at $0$
$F_2(x)$
$k[[x,y]]/(x^2,xy)$
10-adic numbers
2-truncated Witt vectors over $\Bbb F_2((t))$
ACCP ring with non-ACCP polynomial ring
ACCP ring with non-ACCP power-series
Akizuki's counterexample
Algebraic integers
Atomic domain with nonatomic polynomial ring
Base ring for $R_{187}$
Clark's uniserial ring
Cohn's Schreier domain that isn't GCD
Countably infinite boolean ring
Custom Krull dimension valuation ring
Facchini's torch ring
Finitely cogenerated, not semilocal ring
Grams' atomic domain which doesn't satisfy ACCP
Hochster's connected, nondomain, locally-domain ring
Interval monoid ring
Kasch not semilocal ring
Kerr's Goldie ring with non-Goldie matrix ring
McGovern's commutative Zorn ring that isn't clean
Mori but not Krull domain
Nagata ring that not quasi-excellent
Nagata's normal ring that is not analytically normal
Necklace ring of $\mathbb Z$
non-$h$-local domain
Non-ACCP polynomial ring
Non-ACCP power-series
Non-atomic polynomial ring
Noncoherent product of coherent rings
Osofsky's Type I ring
Perfect non-Artinian ring
Perfect ring that isn't semiprimary
Progression free polynomial ring
Pseudo-Frobenius, not quasi-Frobenius ring
Quasi-continuous ring that is not Ikeda-Nakayama
Ring of holomorphic functions on $\mathbb C$
Ring of integer valued polynomials over the rationals
Samuel's UFD having a non-UFD power series ring
Square of a torch ring
Trivial extension torch ring
$\mathbb R[x,y,z]/(x^2,y^2, xz,yz,z^2-xy)$
$\mathbb R[x]/(x^2)$
$\mathbb Z/(p^k)$, $p$ a prime, $k>1$
$\mathbb Z[X]/(X^2,4X, 8)$
$\mathbb Z[X]/(X^2,8)$
$F_2[x,y]/(x,y)^2$
Noetherian domain that is not N-1
$2$-adic integers: $\mathbb Z_2$
$\mathbb C$: the field of complex numbers
$\mathbb Q$: the field of rational numbers
$\mathbb Q(x)$: rational functions over the rational numbers
$\mathbb Q[[X]]$
$\mathbb Q[[x^2,x^3]]$
$\mathbb Q[x,x^{-1}]$: Laurent polynomials
$\mathbb Q[x,y]$
$\mathbb Q[x,y]/(x^2, xy)$
$\mathbb Q[X,Y]_{(X,Y)}$
$\mathbb Q[x]$
$\mathbb Q[x_1, x_2,\ldots, x_n]$
$\mathbb R$: the field of real numbers
$\mathbb R[[x]]$
$\mathbb R[x,y]$ completed $I$-adically with $I=(x^2+y^2-1)$
$\mathbb R[x,y]/(x^2+y^2-1)$: ring of trigonometric functions
$\mathbb Z$: the ring of integers
$\mathbb Z/(2)$
$\mathbb Z/(n)$, $n$ squarefree and not prime
$\mathbb Z/(p)$, $p$ an odd prime
$\mathbb Z[\frac{1+\sqrt{-19}}{2}]$
$\mathbb Z[\sqrt{-5}]$
$\mathbb Z[i]$: the Gaussian integers
$\mathbb Z[x]$
$\mathbb Z[x]/(x^2-1)$
$\mathbb Z_S$, where $S=((2)\cup(3))^c$
$\mathbb Z_{(2)}$
$^\ast \mathbb R$: the field of hyperreal numbers
$F_p(x)$
Algebraic closure of $F_2$
catenary, not universally catenary
DVR that is not N-2
Eventually constant sequences in $\mathbb Q$
Eventually constant sequences in $\mathbb Z$
field of $2$-adic numbers
Field of algebraic numbers
Field of constructible numbers
Henselization of $\Bbb Z_{(2)}$
Nagata's Noetherian infinite Krull dimension ring
Noetherian ring that is not Grothendieck and not Nagata
Principal ideal domain that is not Nagata
reduced $I_0$ ring that is not exchange
reduced exchange ring which is not semiregular
ring of germs of holomorphic functions on $\mathbb C^n$, $n>1$
Legend
  • = has the property
  • = does not have the property
  • = information not in database