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  2. Fano plane - Wikipedia

    en.wikipedia.org/wiki/Fano_plane

    The Fano plane is an example of an (n 3)-configuration, that is, a set of n points and n lines with three points on each line and three lines through each point. The Fano plane, a (7 3)-configuration, is unique and is the smallest such configuration. [11]

  3. Galois geometry - Wikipedia

    en.wikipedia.org/wiki/Galois_geometry

    The Fano plane, the projective plane over the field with two elements, is one of the simplest objects in Galois geometry.. Galois geometry (named after the 19th-century French mathematician Évariste Galois) is the branch of finite geometry that is concerned with algebraic and analytic geometry over a finite field (or Galois field). [1]

  4. Projective plane - Wikipedia

    en.wikipedia.org/wiki/Projective_plane

    The Fano plane, discussed below, is denoted by PG(2, 2). The third example above is the projective plane PG(2, 3). The Fano plane. Points are shown as dots; lines are shown as lines or circles. The Fano plane is the projective plane arising from the field of two elements. It is the smallest projective plane, with only seven points and seven lines.

  5. Projective geometry - Wikipedia

    en.wikipedia.org/wiki/Projective_geometry

    A projective geometry of dimension 1 consists of a single line containing at least 3 points. The geometric construction of arithmetic operations cannot be performed in either of these cases. For dimension 2, there is a rich structure in virtue of the absence of Desargues' Theorem. The Fano plane is the projective plane with the fewest points ...

  6. Incidence geometry - Wikipedia

    en.wikipedia.org/wiki/Incidence_geometry

    If P is a finite set, the projective plane is referred to as a finite projective plane. The order of a finite projective plane is n = k – 1, that is, one less than the number of points on a line. All known projective planes have orders that are prime powers. A projective plane of order n is an ((n 2 + n + 1) n + 1) configuration. The smallest ...

  7. Steiner system - Wikipedia

    en.wikipedia.org/wiki/Steiner_system

    The Fano plane is a Steiner triple system S(2,3,7). The blocks are the 7 lines, each containing 3 points. Every pair of points belongs to a unique line. In combinatorial mathematics, a Steiner system (named after Jakob Steiner) is a type of block design, specifically a t-design with λ = 1 and t = 2 or (recently) t ≥ 2.

  8. Finite geometry - Wikipedia

    en.wikipedia.org/wiki/Finite_geometry

    The Fano plane. This particular projective plane is sometimes called the Fano plane. If any of the lines is removed from the plane, along with the points on that line, the resulting geometry is the affine plane of order 2. The Fano plane is called the projective plane of order 2 because it is unique (up to

  9. Incidence structure - Wikipedia

    en.wikipedia.org/wiki/Incidence_structure

    Example 1: points and lines of the Euclidean plane (top) Example 2: points and circles (middle), Example 3: finite incidence structure defined by an incidence matrix (bottom) In mathematics, an incidence structure is an abstract system consisting of two types of objects and a single relationship between these types of objects.