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  2. List of family name affixes - Wikipedia

    en.wikipedia.org/wiki/List_of_family_name_affixes

    For ease of use, the [i] in front of the last name, and the ending _ve, were dropped. If the last name ends in [a], then removing the [j] would give the name of the patriarch or the place, as in, Grudaj - j = Gruda (place in MM). Otherwise, removing the whole ending [aj] yields the name of founder or place of origin, as in Lekaj - aj = Lek(ë).

  3. Homotopy colimit and limit - Wikipedia

    en.wikipedia.org/wiki/Homotopy_colimit_and_limit

    The new diagram, forming the homotopy colimit of the composition diagram pictorially is represented as giving another model of the homotopy colimit which is homotopy equivalent to the original diagram (without the composition of g ∘ f {\displaystyle g\circ f} ) given above.

  4. Identity line - Wikipedia

    en.wikipedia.org/wiki/Identity_line

    The Keynesian cross diagram includes an identity line to show states in which aggregate demand equals output. In a 2-dimensional Cartesian coordinate system, with x representing the abscissa and y the ordinate, the identity line [1] [2] or line of equality [3] is the y = x line. The line, sometimes called the 1:1 line, has a slope of 1. [4]

  5. Cartesian coordinate system - Wikipedia

    en.wikipedia.org/wiki/Cartesian_coordinate_system

    Likewise, (x, −y) are the coordinates of its reflection across the first coordinate axis (the x-axis). In more generality, reflection across a line through the origin making an angle with the x-axis, is equivalent to replacing every point with coordinates (x, y) by the point with coordinates (x′,y′), where

  6. Mapping cylinder - Wikipedia

    en.wikipedia.org/wiki/Mapping_cylinder

    In mathematics, specifically algebraic topology, the mapping cylinder [1] of a continuous function between topological spaces and is the quotient = (([,])) / where the denotes the disjoint union, and ~ is the equivalence relation generated by

  7. Glossary of graph theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_graph_theory

    If a directed path leads from vertex x to vertex y, x is a predecessor of y, y is a successor of x, and y is said to be reachable from x. direction 1. The asymmetric relation between two adjacent vertices in a graph, represented as an arrow. 2. The asymmetric relation between two vertices in a directed path. disconnect Cause to be disconnected ...

  8. Randolph diagram - Wikipedia

    en.wikipedia.org/wiki/Randolph_diagram

    Randolph diagram that represents the logical statement (disjunction). A Randolph diagram ( R-diagram ) is a simple way to visualize logical expressions and combinations of sets. Randolph diagrams were created by mathematician John F. Randolph in 1965, during his tenure at the University of Arkansas .

  9. String diagram - Wikipedia

    en.wikipedia.org/wiki/String_diagram

    each box : is a string diagram, for each list of wires x {\displaystyle x} , the identity id ( x ) : xx {\displaystyle {\text{id}}(x):x\to x} is a string diagram representing the process which does nothing to its input system, it is drawn as a bunch of parallel wires,