• Ordered geometry is a form of geometry featuring the concept of intermediacy (or "betweenness") but, like projective geometry, omitting the basic notion...
    6 KB (818 words) - 01:47, 4 March 2025
  • other geometries. Absolute geometry is an extension of ordered geometry, and thus, all theorems in ordered geometry hold in absolute geometry. The converse...
    8 KB (1,057 words) - 07:07, 15 February 2025
  • Thumbnail for Affine geometry
    In mathematics, affine geometry is what remains of Euclidean geometry when ignoring (mathematicians often say "forgetting") the metric notions of distance...
    20 KB (2,632 words) - 10:01, 21 October 2024
  • Thumbnail for Euclidean geometry
    Euclidean geometry is a mathematical system attributed to ancient Greek mathematician Euclid, which he described in his textbook on geometry, Elements...
    59 KB (7,198 words) - 13:24, 17 May 2025
  • Foundations of geometry is the study of geometries as axiomatic systems. There are several sets of axioms which give rise to Euclidean geometry or to non-Euclidean...
    76 KB (10,907 words) - 02:44, 15 June 2024
  • affine and Euclidean geometry. Projective geometry is not "ordered" and so it is a distinct foundation for geometry. Projective geometry is less restrictive...
    38 KB (5,099 words) - 22:20, 24 May 2025
  • algebraic geometry Noncommutative geometry Ordered geometry Parabolic geometry Plane geometry Projective geometry Quantum geometry Riemannian geometry Ruppeiner...
    13 KB (914 words) - 10:26, 25 December 2024
  • Thumbnail for Point (geometry)
    In geometry, a point is an abstract idealization of an exact position, without size, in physical space, or its generalization to other kinds of mathematical...
    15 KB (1,649 words) - 10:02, 16 May 2025
  • Thumbnail for Line segment
    generally than above, the concept of a line segment can be defined in an ordered geometry. A pair of line segments can be any one of the following: intersecting...
    11 KB (1,526 words) - 10:06, 18 May 2025
  • orderings. Every subfield of an ordered field is also an ordered field in the inherited order. Every ordered field contains an ordered subfield that is isomorphic...
    14 KB (2,208 words) - 02:57, 8 March 2025
  • theory. Contributors to ordered geometry were listed in a 1961 textbook: It was Pasch in 1882, who first pointed out that a geometry of order could be developed...
    31 KB (4,510 words) - 13:16, 14 April 2025
  • Thumbnail for Ordered ring
    In abstract algebra, an ordered ring is a (usually commutative) ring R with a total order ≤ such that for all a, b, and c in R: if a ≤ b then a + c ≤...
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  • Thumbnail for Discrete geometry
    Discrete geometry and combinatorial geometry are branches of geometry that study combinatorial properties and constructive methods of discrete geometric...
    15 KB (1,575 words) - 05:36, 16 October 2024
  • Thumbnail for Line (geometry)
    In geometry, a straight line, usually abbreviated line, is an infinitely long object with no width, depth, or curvature, an idealization of such physical...
    29 KB (4,225 words) - 18:36, 24 April 2025
  • In mathematics, analytic geometry, also known as coordinate geometry or Cartesian geometry, is the study of geometry using a coordinate system. This contrasts...
    40 KB (5,612 words) - 22:13, 23 December 2024
  • name of Ricci calculus Absolute geometry Also called neutral geometry, a synthetic geometry similar to Euclidean geometry but without the parallel postulate...
    71 KB (7,692 words) - 22:32, 2 March 2025
  • Thumbnail for Affine space
    (1969, p. 192) axiomatizes the special case of affine geometry over the reals as ordered geometry together with an affine form of Desargues's theorem and...
    48 KB (7,537 words) - 05:07, 13 April 2025
  • systems of geometry include ordered geometry, absolute geometry, affine geometry, Euclidean geometry, projective geometry, and hyperbolic geometry. For each...
    36 KB (5,269 words) - 20:51, 27 December 2024
  • Thumbnail for Archimedean property
    mathematics such as David Hilbert's axioms for geometry, and the theories of ordered groups, ordered fields, and local fields. An algebraic structure...
    16 KB (2,393 words) - 09:54, 14 December 2024
  • Pasch's theorem (category Euclidean plane geometry)
    statement, is also included and remains an axiom in Hilbert's treatment. Ordered geometry Pasch's axiom Pasch 1912 Coxeter (1969, p. 179) states the result in...
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  • should not be confused with discrete geometry (combinatorial geometry). Order theory is the study of partially ordered sets, both finite and infinite. It...
    33 KB (3,524 words) - 20:02, 6 May 2025
  • Thumbnail for Sylvester–Gallai theorem
    Sylvester–Gallai theorem (category Euclidean plane geometry)
    unnecessarily powerful, instead proving the theorem using only the axioms of ordered geometry. This proof is by Leroy Milton Kelly. Aigner & Ziegler (2018) call...
    41 KB (5,243 words) - 02:53, 8 September 2024
  • Thumbnail for Coordinate system
    Coordinate system (category Analytic geometry)
    In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine and standardize the position of the points...
    19 KB (2,278 words) - 21:17, 26 May 2025
  • non-Archimedean ordered field based on the field of rational functions. In this geometry, there are significant differences from Euclidean geometry; in particular...
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  • Pasch's axiom (category Euclidean plane geometry)
    In geometry, Pasch's axiom is a statement in plane geometry, used implicitly by Euclid, which cannot be derived from the postulates as Euclid gave them...
    8 KB (1,008 words) - 15:16, 20 March 2025
  • the Dehn field, an example of a non-Archimedean ordered field, to construct non-Euclidean geometries in which the parallel postulate fails to be true...
    4 KB (474 words) - 05:05, 2 March 2024
  • Thumbnail for Partially ordered set
    reflexive, antisymmetric, and transitive. A partially ordered set (poset for short) is an ordered pair P = ( X , ≤ ) {\displaystyle P=(X,\leq )} consisting...
    40 KB (5,418 words) - 19:44, 28 May 2025
  • Thumbnail for Pixel geometry
    green and blue) in an image sensor or display can be ordered in different patterns, called pixel geometry. The geometric arrangement of the primary colors...
    2 KB (114 words) - 01:54, 25 October 2024
  • Thumbnail for Oswald Veblen
    Relativitätstheorie (Springer Verlag, 1933) Hughes plane Finite geometry Ordered geometry Hall plane of order 9 Mac Lane, Saunders (1964). "Oswald Veblen...
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  • Thumbnail for Algebraic geometry
    Algebraic geometry is a branch of mathematics which uses abstract algebraic techniques, mainly from commutative algebra, to solve geometrical problems...
    62 KB (7,498 words) - 11:10, 27 May 2025