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  2. Map graph - Wikipedia

    en.wikipedia.org/wiki/Map_graph

    A 3-map graph is a planar graph, and every planar graph can be represented as a 3-map graph. Every 4-map graph is a 1-planar graph , a graph that can be drawn with at most one crossing per edge, and every optimal 1-planar graph (a graph formed from a planar quadrangulation by adding two crossing diagonals to every quadrilateral face) is a 4-map ...

  3. Map (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Map_(mathematics)

    A map is a function, as in the association of any of the four colored shapes in X to its color in Y. In mathematics, a map or mapping is a function in its general sense. [1] These terms may have originated as from the process of making a geographical map: mapping the Earth surface to a sheet of paper. [2]

  4. Mathematical diagram - Wikipedia

    en.wikipedia.org/wiki/Mathematical_diagram

    In mathematics, and especially in category theory, a commutative diagram is a diagram of objects, also known as vertices, and morphisms, also known as arrows or edges, such that when selecting two objects any directed path through the diagram leads to the same result by composition.

  5. Pointed set - Wikipedia

    en.wikipedia.org/wiki/Pointed_set

    The class of all pointed sets together with the class of all based maps forms a category. Every pointed set can be converted to an ordinary set by forgetting the basepoint (the forgetful functor is faithful), but the reverse is not true.

  6. Category:Graphemes - Wikipedia

    en.wikipedia.org/wiki/Category:Graphemes

    Typographical symbols (5 C, 75 P) Pages in category "Graphemes" The following 14 pages are in this category, out of 14 total.

  7. Category:Fields of mathematics - Wikipedia

    en.wikipedia.org/wiki/Category:Fields_of_mathematics

    Experimental mathematics (5 P) F. Fields of abstract algebra (18 C, 1 P) Foundations of mathematics (2 C, 17 P) G. Game theory (20 C, 171 P) Geometry (21 C, 132 P)

  8. Commutative diagram - Wikipedia

    en.wikipedia.org/wiki/Commutative_diagram

    In mathematics, and especially in category theory, a commutative diagram is a diagram such that all directed paths in the diagram with the same start and endpoints lead to the same result. [1] It is said that commutative diagrams play the role in category theory that equations play in algebra .

  9. Albanese variety - Wikipedia

    en.wikipedia.org/wiki/Albanese_variety

    If the ground field k is algebraically closed, the Albanese map ⁡ can be shown to factor over a group homomorphism (also called the Albanese map) ⁡ ()from the Chow group of 0-dimensional cycles on V to the group of rational points of ⁡ (), which is an abelian group since ⁡ is an abelian variety.