• Thumbnail for Affine connection
    "Espaces à connexion affine, projective et conforme", Acta Math., 48: 1–42, doi:10.1007/BF02629755 A more mathematically motivated account of affine connections...
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  • Thumbnail for Laurent Schwartz
    xv+132 pp. ISBN 3-540-09749-X Les tenseurs. Suivi de "Torseurs sur un espace affine by Y. Bamberger and J.-P. Bourguignon. Second edition. Hermann, Paris...
    17 KB (1,997 words) - 02:07, 11 July 2025
  • point de l'espace affine attaché au point m' correspond à tel point de l'espace affine attaché au point m, que tel vecteur du premier espace es parallèle ou...
    8 KB (1,260 words) - 19:50, 24 October 2024
  • Thumbnail for Torsion tensor
    differential geometry, the torsion tensor is a tensor that is associated to any affine connection. The torsion tensor is a bilinear map of two input vectors X...
    27 KB (4,375 words) - 19:53, 19 June 2025
  • Thumbnail for Solder form
    called the canonical form, or the tautological form. Suppose that E is an affine vector bundle (a vector bundle without a choice of zero section). Then a...
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  • geometric setting it is a statement about the triviality of vector bundles on affine space. The theorem states that every finitely generated projective module...
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  • geometry, a Cartan connection is a flexible generalization of the notion of an affine connection. It may also be regarded as a specialization of the general concept...
    46 KB (6,755 words) - 22:53, 22 July 2024
  • depending on what sort of data one wants to transport. For instance, an affine connection, the most elementary type of connection, gives a means for parallel...
    19 KB (2,617 words) - 17:10, 15 March 2025
  • category theory used in multiple contexts, such as with covering spaces (espace étalé). They were introduced as a mechanism for keeping track of data surrounding...
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  • Thumbnail for Marcel-Paul Schützenberger
    Alain Connes and André Lichnerowicz, Paris, O. Jacob; Saint-Gély du Fesc : Espace 34 (2000)/Triangle of thoughts Les failles du darwinisme, La Recherche,...
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  • quadric or a reducible quadric. A quadric is an affine algebraic variety, or, if it is reducible, an affine algebraic set. Quadrics may also be defined in...
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  • the affine connection and then separately posing a constraint that forces both the torsion and contorsion to be zero, which thus forces the affine connection...
    27 KB (3,506 words) - 05:20, 2 June 2025
  • Thumbnail for Moving frame
    consisting of orthogonal unit vectors (an orthonormal basis). An affine frame of an affine space consists of a choice of origin along with an ordered basis...
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  • Thumbnail for Fiber bundle
    espaces fibrés différentiables". Comptes rendus de l'Académie des Sciences. 224: 1611–1612. Ehresmann, Charles (1955). "Les prolongements d'un espace...
    29 KB (4,152 words) - 08:22, 17 July 2025
  • the weak topology, then every group (or equivalently: every semigroup) of affine isometries of K {\displaystyle K} has at least one fixed point. (Here, a...
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  • and in particular semisimple Lie algebras. There is a generalization to affine Lie algebras shown by Feigin and Frenkel showing that an algebra known as...
    16 KB (2,545 words) - 18:47, 26 January 2024
  • Thumbnail for Symmetric space
    regarded as affine symmetric spaces. If M = G / H is a symmetric space, then Nomizu showed that there is a G-invariant torsion-free affine connection (i...
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  • supremum of coefficients), and the polydisc plays a role analogous to that of affine n-space in algebraic geometry. Points on the polydisc are defined to be...
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  • Thumbnail for Möbius strip
    Euclidean lines include the affine transformations, and the symmetries of hyperbolic lines include the Möbius transformations. The affine transformations and...
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  • {n}{2}}+1)^{2}}}} where Γ {\displaystyle \Gamma } is the Gamma function. By affine invariance, any solid ellipsoid has the same Mahler volume. The polar body...
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  • Thumbnail for Mohsen Hashtroodi
    Connection. His subsequent research involved using intrinsically defined affine and Weylian connections to study the invariants of differential systems...
    4 KB (300 words) - 09:27, 10 December 2024
  • Thumbnail for Renaissance (French political party)
    2016. Nathalie Raulin; Guillaume Gendron (3 April 2017). "L'équipe Macron affine la mise en cène". Libération (in French). Retrieved 19 April 2017. Camille...
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  • Lebesgue covering theorem. The Lebesgue covering dimension coincides with the affine dimension of a finite simplicial complex. The covering dimension of a normal...
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  • Thumbnail for Orbifold
    time a discrete group acts simply transitively on the triangles in the affine Bruhat–Tits building for SL3(Qp); in 1979 Mumford discovered the first example...
    78 KB (10,243 words) - 08:24, 30 June 2025
  • x − y ) {\displaystyle d(x,y)=p(x-y)} . This is a convex function of an affine function of x {\displaystyle x} (in particular, a translation), and therefore...
    8 KB (1,270 words) - 19:43, 26 June 2025
  • Thumbnail for Cornelia Druțu
    characterization of Kazhdan's property (T) and of the Haagerup property using affine isometric actions on median spaces. A study of generalizations of Kazhdan's...
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  • Thumbnail for Corsican language
    dissimili dal sardo, costituiscono oggi il gruppo romanzo linguisticamente più affine al sistema dei dialetti toscani." Posner, Rebecca; Sala, Marius. "Sardinian...
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  • allowed to have singularities. Stein spaces are the analogues of affine varieties or affine schemes in algebraic geometry. If the univalent domain on C n...
    124 KB (17,717 words) - 22:01, 1 July 2025
  • precisely, the space of the isomorphism classes of spin structures is an affine space over H1(M,Z2). Intuitively, for each nontrivial cycle on M a spin...
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  • linear when applied to connections, is sometimes used (like the word affine – see Affine connection) to refer to connections defined on the tangent bundle...
    23 KB (3,155 words) - 16:33, 10 January 2024