Although the various primeideal theorems may appear simple and intuitive, they can in general not be derived from the axioms of Zermelo-Fraenkel set theory (ZF).
Historically, the first statement relating to later primeideal theorems was in fact referring to filters -- subsets that are ideals with respect to the dual order.
The Boolean primeideal theorem is the strong primeideal theorem for Boolean algebras.
Encyclopedia: Prime ideal(Site not responding. Last check: 2007-11-07)
If R is a commutative ring, then an ideal P of R is prime if it has the following two properties: In ring theory, a branch of abstract algebra, a commutative ring is a ring in which the multiplication operation obeys the commutative law.
In abstract algebra and algebraic geometry, the spectrum of a commutative ring R, denoted by Spec(R), is defined to be the set of all primeideals of R. It is commonly augmented with the Zariski topology and with a structure sheaf, turning it into a locally ringed space.
If R is a noncommutative ring, then an ideal P of R is prime if it has the following two properties: In mathematics, a ring is an algebraic structure in which addition and multiplication are defined and have similar (but not identical) properties to those familiar from the integers.
Prime ideal -- Facts, Info, and Encyclopedia article(Site not responding. Last check: 2007-11-07)
Primeideals in (Click link for more info and facts about order theory) order theory are treated in the article on (Click link for more info and facts about ideals in order theory) ideals in order theory.
Every maximalideal (see above) is prime; an ideal I in the commutative ring R is a maximalideal if and only if the factor ring R/I is a (A piece of land cleared of trees and usually enclosed) field.
One use of primeideals occurs in algebraic_geometry, where varieties are defined as the zero sets of ideals in polynomialrings.
The introduction of primeideals in does not work in rings of algebraic_integers, but a substitute was found when Dedekind replaced elements by ideals and prime elements by primeideals; see Dedekind_domain.
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PlanetMath: examples of prime ideal decomposition in number fields(Site not responding. Last check: 2007-11-07)
"examples of primeideal decomposition in number fields" is owned by alozano.
, primeideal decomposition in cyclotomic extensions of
This is version 9 of examples of primeideal decomposition in number fields, born on 2003-08-20, modified 2003-08-27.
Recall that the height of an ideal I is defined as ht (I) = min{ht (p)I H p, p F H * prime }.
We denote by Proj (H *) the spectrum of homogeneous primeideals in H *, and by Proj P * (H *) the spectrum of P * invariant homogeneous primeideals, where an ideal is called P * invariant if it is stable under the action of the Steenrod algebra P *.
Since this is possible for every primeideal q of height k, this means that no primeideal of height k is contained in a primeideal associated to (d q s n,0,.
Given an integral ideal I of O, return two elements of the field of fractions of O that form a two-element normal presentation for I, as well as an integer g such that I is g-normal.
The denominator of the fractional ideal I. This is the smallest positive integer d such that dI is an integral ideal.
Returns the basis matrix for the ideal I of O. The basis matrix consists of the elements of a Z-basis for the ideal written as rows of rational coefficients with respect to the power basis of the number field K of which O is an order.
A primeideal p in r is in the set d(r) if it is the smallest primeidealcontaining the annihilator [0:x] for some x.
If there is a primeideal p containing [0:x] for some x, p descends to a minimal primeidealcontaining [0:x], a member of d(r).
Each associate is prime, and when a radical is prime, it is the minimal primeidealcontaining [0:x].
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prime_ideal(Site not responding. Last check: 2007-11-07)
Since each primeideal obviously is an ideal, you can do everything you can do with an alg_ideal also with a prime_ideal.
A prime_ideal consists of a prime p (represented by a bigint) and an alg_number a which especially contains the pointer to an nf_base B, such that B is the basis of the order O over which the primeideal is defined and that p and a generate the primeideal as O-ideal.
Additionaly the lidia_size_ts e and f contain the ramification index and the degree of inertia of the primeideal, respectively.
Because r is noetherian, it is also a pid, and a dvr with valuation group Z. The ideals are precisely the powers of the maximalideal, and the maximalideal is the only primeideal.
Start with the idealgenerated by x, and find a larger ideal in s, then a larger one, then a larger one, and so on, until the process stops, which it must, since r is noetherian.
Every ideal is a power of m, ideals are linearly ordered, and r is a valuation ring.
Boolean prime ideal theorem(Site not responding. Last check: 2007-11-07)
In mathematics, a number of so called primeideal theorems for guaranteeing the existence of certain subsets of an abstract algebra can be stated.
The prototypical properties that were disscussed for Boolean algebras in the above section can easily be modified to include more general lattices, such as distributive lattices or Heyting algebras.
M. Erné, PrimeIdeal Theory for General Algebras, Applied Categorical Structures 8, 115--144, 2000.
ABSTRACT ALGEBRA ON LINE: Ideal Theory of Commutative Rings(Site not responding. Last check: 2007-11-07)
An integral domain D is called a Dedekind domain if each proper ideal of D can be written as a product of a finite number of primeideals of D. We will show in Theorem 12.2.4 that a Dedekind domain has some of the properties of a principal ideal domain.
I is the intersection of all primeideals of R that contain I. In any principal ideal domain, our next definitions both reduce to the statement that the ideal in question is generated by a power of an irreducible element.
One important consequence of the generalized principal ideal theorem is that any Noetherian ring satisfies the descending chain condition for primeideals.
ABSTRACT ALGEBRA ON LINE: Structure of Noncommutative Rings(Site not responding. Last check: 2007-11-07)
P, for any ideals A, B of R. A proper ideal I of the ring R is called a semiprime ideal if it is an intersection of primeideals of R. A proper ideal P of the ring R is called a left primitive ideal if it is the annihilator of a simple left R-module.
In a left Artinian ring, the notions of maximalideal, primitive ideal, and primeideal coincide.
If P is a primitive ideal of the ring R, then there exists a division ring D and a vector space V over D for which R/P is isomorphic to a subring of the ring of all linear transformations from V into V. Proposition.
Finite Rings(Site not responding. Last check: 2007-11-07)
We can also see this by noting that the ideal consisting of all nilpotent elements of a ring is the intersection of all its primeideals.
We have thus shown that any non-nilpotent element is in the complement of some primeideal; the converse, that a nilpotent element belongs to all primeideals, is also clear.
Hence the intersection of all primeideals is also the ideal consisting of all nilpotent elements of a ring; this ideal is called the nil radical of the ring.
PlanetMath: prime ideal(Site not responding. Last check: 2007-11-07)
is called a primeideal if the following equivalent conditions are met:
Cross-references: integral domain, quotient ring, prime, identity, commutative, primering, ideals, right ideals, satisfies, product of ideals, left ideals, equivalent, proper ideal, ring
This is version 10 of primeideal, born on 2001-10-20, modified 2005-07-24.