• In algebra, a noncommutative Jordan algebra is an algebra, usually over a field of characteristic not 2, such that the four operations of left and right...
    2 KB (192 words) - 23:11, 16 January 2022
  • necessarily associative", just as "noncommutative" means "not necessarily commutative" for noncommutative rings. An algebra is unital or unitary if it has...
    25 KB (3,005 words) - 20:16, 18 February 2025
  • Noncommutative algebraic geometry is a branch of mathematics, and more specifically a direction in noncommutative geometry, that studies the geometric...
    14 KB (1,719 words) - 07:42, 25 June 2025
  • mathematics, especially in the area of abstract algebra known as ring theory, a free algebra is the noncommutative analogue of a polynomial ring since its elements...
    6 KB (915 words) - 01:13, 27 September 2024
  • one of the motivations for the noncommutative topology and noncommutative geometry programs. Given a Banach *-algebra A with an approximate identity,...
    20 KB (2,830 words) - 09:30, 14 January 2025
  • Thumbnail for Commutative algebra
    is known as noncommutative algebra; it includes ring theory, representation theory, and the theory of Banach algebras. Commutative algebra is essentially...
    17 KB (2,025 words) - 19:22, 15 December 2024
  • coordinate ring of an affine algebraic variety, and the ring of integers of a number field. Examples of noncommutative rings include the ring of n ×...
    99 KB (13,642 words) - 07:01, 14 July 2025
  • ba are different. Equivalently, a noncommutative ring is a ring that is not a commutative ring. Noncommutative algebra is the part of ring theory devoted...
    20 KB (2,804 words) - 01:41, 1 November 2023
  • philosophy of noncommutative geometry, which tries to study various non-classical and/or pathological objects by noncommutative operator algebras. Examples...
    5 KB (545 words) - 13:58, 27 September 2024
  • commutativity assumption is a subject matter of noncommutative algebraic geometry and, more recently, of derived algebraic geometry. See also: Generic matrix ring...
    31 KB (4,261 words) - 10:53, 26 May 2025
  • this algebra yields as corollaries the various canonical forms of matrices, such as Jordan canonical form. In some approaches to noncommutative geometry...
    7 KB (1,069 words) - 10:21, 30 June 2021
  • Ring theory (category Algebraic structures)
    Commutative rings are much better understood than noncommutative ones. Algebraic geometry and algebraic number theory, which provide many natural examples...
    24 KB (3,093 words) - 19:58, 15 June 2025
  • coefficients in the commutative ring R is the free commutative R-algebra of rank n, the noncommutative polynomial ring in n variables with coefficients in the...
    54 KB (8,646 words) - 05:26, 20 June 2025
  • mathematics, and more specifically in abstract algebra, a *-algebra (or involutive algebra; read as "star-algebra") is a mathematical structure consisting of...
    11 KB (1,359 words) - 09:14, 24 May 2025
  • his Ph.D. from Yale University in 1965 with thesis Norms and Noncommutative Jordan Algebras supervised by Nathan Jacobson. McCrimmon spent his final year...
    7 KB (722 words) - 04:41, 31 May 2025
  • Thumbnail for Lie algebra
    In mathematics, a Lie algebra (pronounced /liː/ LEE) is a vector space g {\displaystyle {\mathfrak {g}}} together with an operation called the Lie bracket...
    62 KB (10,497 words) - 10:18, 26 June 2025
  • has a non-trivial invariant subspace, the fundamental theorem of noncommutative algebra asserts that Lat(Σ) contains non-trivial elements for certain Σ...
    14 KB (1,889 words) - 13:52, 20 September 2024
  • (mathematics) Commutative algebra, Commutative ring Ring theory, Noncommutative ring Algebra over a field Non-associative algebra Relatives to rings: Semiring...
    12 KB (1,129 words) - 10:50, 10 October 2024
  • mathematics, a Clifford algebra is an algebra generated by a vector space with a quadratic form, and is a unital associative algebra with the additional structure...
    65 KB (9,287 words) - 13:11, 13 July 2025
  • Thumbnail for Abstract algebra
    In mathematics, more specifically algebra, abstract algebra or modern algebra is the study of algebraic structures, which are sets with specific operations...
    33 KB (4,336 words) - 00:00, 30 June 2025
  • classification of simple Jordan algebras. A Hurwitz algebra or composition algebra is a finite-dimensional not necessarily associative algebra A with identity...
    28 KB (3,682 words) - 00:14, 19 May 2025
  • Thumbnail for Kernel (algebra)
    In algebra, the kernel of a homomorphism is the relation describing how elements in the domain of the homomorphism become related in the image. A homomorphism...
    34 KB (5,494 words) - 22:39, 14 July 2025
  • reference was mentioned in "Coproduct in the category of (noncommutative) associative algebras". Stack Exchange. May 9, 2012. "How to construct the coproduct...
    3 KB (313 words) - 17:55, 8 July 2025
  • In algebra, a semiprimitive ring or Jacobson semisimple ring or J-semisimple ring is a ring whose Jacobson radical is zero. This is a type of ring more...
    3 KB (372 words) - 18:27, 14 June 2022
  • State (functional analysis) (category C*-algebras)
    (self-adjoint elements of the C*-algebra) to their expected measurement outcome (real number). States can be viewed as noncommutative generalizations of probability...
    6 KB (825 words) - 19:00, 30 June 2025
  • split-octonions, like the octonions, are noncommutative and nonassociative. Also like the octonions, they form a composition algebra since the quadratic form N is...
    12 KB (1,669 words) - 23:19, 19 February 2025
  • infinite-dimensional Lie algebras. A basic example of a noncommutative vertex algebra is the rank 1 free boson, also called the Heisenberg vertex operator algebra. It is...
    53 KB (8,938 words) - 01:42, 23 May 2025
  • Integral domain (category Commutative algebra)
    Garrett (1967). Algebra. New York: The Macmillan Co. ISBN 1-56881-068-7. MR 0214415. McConnell, J.C.; Robson, J.C., Noncommutative Noetherian Rings,...
    20 KB (3,126 words) - 13:41, 17 April 2025
  • Semiring (redirect from Rig (algebra))
    In abstract algebra, a semiring is an algebraic structure. Semirings are a generalization of rings, dropping the requirement that each element must have...
    52 KB (8,021 words) - 20:00, 5 July 2025
  • Thumbnail for Matrix (mathematics)
    Press, ISBN 9780521845045 Rowen, Louis Halle (2008), Graduate Algebra: noncommutative view, Providence, RI: American Mathematical Society, ISBN 978-0-8218-4153-2...
    128 KB (15,699 words) - 03:26, 7 July 2025