• Thumbnail for Projective linear group
    especially in the group theoretic area of algebra, the projective linear group (also known as the projective general linear group or PGL) is the induced...
    44 KB (5,609 words) - 18:42, 24 February 2025
  • Thumbnail for General linear group
    is that the associated projective semilinear group PΓL(n, F) (which contains PGL(n, F)) is the collineation group of projective space, for n > 2, and thus...
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  • mathematics, a projective representation of a group G on a vector space V over a field F is a group homomorphism from G to the projective linear group P G L (...
    25 KB (4,247 words) - 16:51, 8 April 2025
  • Thumbnail for Special linear group
    SL(2, R) SL(2, C) Modular group (PSL(2, Z)) Projective linear group Conformal map Representations of classical Lie groups Hall 2015 Section 2.5 Hall...
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  • a field, a linear fractional transformation is the restriction to the field of a projective transformation or homography of the projective line. When...
    12 KB (1,703 words) - 19:00, 16 March 2025
  • Thumbnail for Real projective line
    one-dimensional linear subspaces of a two-dimensional vector space over the reals. The automorphisms of a real projective line are called projective transformations...
    12 KB (1,670 words) - 02:32, 1 December 2024
  • Thumbnail for Projective plane
    the complex projective plane, and finite, such as the Fano plane. A projective plane is a 2-dimensional projective space. Not all projective planes can...
    53 KB (6,933 words) - 21:56, 26 April 2025
  • In projective geometry and linear algebra, the projective orthogonal group PO is the induced action of the orthogonal group of a quadratic space V = (V...
    13 KB (1,874 words) - 06:22, 28 December 2022
  • Thumbnail for Cross-ratio
    k-tuples of points are not in general position. While the projective linear group of the projective line is 3-transitive (any three distinct points can be...
    30 KB (4,844 words) - 08:46, 28 April 2025
  • the field extension. The automorphism group of the projective n-space over a field k is the projective linear group PGL n ⁡ ( k ) . {\displaystyle \operatorname...
    11 KB (1,691 words) - 06:16, 14 January 2025
  • that the projective groups associated to these groups are also linear, though less obviously. For example, the group PSL2(R) is not a group of 2 × 2 matrices...
    13 KB (1,588 words) - 21:05, 14 April 2025
  • Thumbnail for Group of Lie type
    Jordan's theorem that the projective special linear group PSL(2, q) is simple for q ≠ 2, 3. This theorem generalizes to projective groups of higher dimensions...
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  • In projective geometry, a homography is an isomorphism of projective spaces, induced by an isomorphism of the vector spaces from which the projective spaces...
    30 KB (3,641 words) - 01:24, 25 February 2024
  • Projective space Projective transformation Projective geometry Projective linear group Quadric and conic section Glossary of linear algebra Glossary of...
    5 KB (377 words) - 12:12, 30 October 2023
  • Thumbnail for Projective space
    concept of a projective space originated from the visual effect of perspective, where parallel lines seem to meet at infinity. A projective space may thus...
    37 KB (5,670 words) - 20:15, 2 March 2025
  • In mathematics, projective geometry is the study of geometric properties that are invariant with respect to projective transformations. This means that...
    38 KB (5,099 words) - 13:20, 23 January 2025
  • mathematics, projective group may refer to: Projective linear group or one of the related linear groups Projective orthogonal group Projective unitary group Projective...
    349 bytes (71 words) - 19:47, 17 May 2013
  • Thumbnail for Algebraic group
    orthogonal groups, general linear groups, projective groups, Euclidean groups, etc. Many matrix groups are also algebraic. Other algebraic groups occur naturally...
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  • Thumbnail for Group action
    the action of the general linear group on projective space. Particularly notable is PGL(2, K), the symmetries of the projective line, which is sharply 3-transitive...
    46 KB (5,678 words) - 08:36, 2 May 2025
  • Thumbnail for Linear algebraic group
    In mathematics, a linear algebraic group is a subgroup of the group of invertible n × n {\displaystyle n\times n} matrices (under matrix multiplication)...
    41 KB (6,000 words) - 12:59, 4 October 2024
  • In linear algebra, particularly projective geometry, a semilinear map between vector spaces V and W over a field K is a function that is a linear map "up...
    12 KB (2,060 words) - 09:10, 7 November 2024
  • are the projective transformations of the complex projective line. They form a group called the Möbius group, which is the projective linear group PGL(2...
    70 KB (10,603 words) - 05:07, 10 April 2025
  • interpretation of the Brauer group of a field K is that it classifies the projective varieties over K that become isomorphic to projective space over an algebraic...
    22 KB (2,937 words) - 18:11, 30 April 2025
  • holomorphic isometry group of complex projective space, just as the projective orthogonal group is the isometry group of real projective space. In terms of...
    13 KB (2,310 words) - 12:41, 21 September 2023
  • Thumbnail for SL2(R)
    SL2(R) (category Projective geometry)
    by fractional linear transformations. The group action factors through the quotient PSL(2, R) (the 2 × 2 projective special linear group over R). More...
    21 KB (2,988 words) - 18:22, 23 July 2024
  • variety Projective linear group Projective module Projective line Projective object Projective transformation Projective hierarchy Projective connection...
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  • are conjugate. The projective linear group of dimension two over the finite field with five elements, PGL(2, 5), acts on the projective line over the field...
    22 KB (3,213 words) - 17:25, 20 December 2024
  • Severi–Brauer variety (category Algebraic groups)
    Galois cohomology classes in H1(G(Ks/K),PGLn), where PGLn is the projective linear group, and n is one more than the dimension of the variety V. As usual...
    6 KB (717 words) - 15:49, 21 February 2024
  • Thumbnail for Modular group
    In mathematics, the modular group is the projective special linear group PSL ⁡ ( 2 , Z ) {\displaystyle \operatorname {PSL} (2,\mathbb {Z} )} of 2 × 2...
    25 KB (3,438 words) - 22:18, 30 April 2025
  • 11 in humans for the group P G L 2 {\displaystyle \mathrm {PGL} _{2}} in mathematics, see projective linear group and modular group This disambiguation...
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