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  2. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a / b or ⁠ ⁠, where a and b are both integers. [ 9] As with other fractions, the denominator ( b) cannot be zero. Examples include ⁠ 1 2 ⁠, − ⁠ 8 5 ⁠, ⁠ −8 5 ⁠, and ⁠ 8 −5 ⁠.

  3. Additional-member system - Wikipedia

    en.wikipedia.org/wiki/Additional-member_system

    The additional-member system ( AMS) or is a mixed electoral system under which most representatives are elected in single-member districts (SMDs), and a fixed number of other "additional members" are elected to make the seat distribution in the chamber more proportional to the way votes are cast for party lists. [ 1][ 2][ 3] It is distinct from ...

  4. Function composition - Wikipedia

    en.wikipedia.org/wiki/Function_composition

    The set of all functions f: X → X is called the full transformation semigroup [5] or symmetric semigroup [6] on X. (One can actually define two semigroups depending how one defines the semigroup operation as the left or right composition of functions. [7]) Composition of a shear mapping (red) and a clockwise rotation by 45° (green). On the ...

  5. Proportional representation - Wikipedia

    en.wikipedia.org/wiki/Proportional_representation

    The mixed-member proportional system combines single member plurality voting (SMP), also known as first-past-the-post (FPTP), with party-list PR in a way that the overall result of the election is supposed to be proportional. The voter may vote for a district candidate as well as a party.

  6. Mixed-member proportional representation - Wikipedia

    en.wikipedia.org/wiki/Mixed-member_proportional...

    e. Mixed-member proportional representation ( MMP or MMPR) is a mixed electoral system which combines local winner-take-all elections with a compensatory tier of party list votes, which are used to allocate additional members in a way that aims to produce proportional representation overall. In typical MMP systems, voters get two votes: one to ...

  7. Duverger's law - Wikipedia

    en.wikipedia.org/wiki/Duverger's_law

    A two-party system is most common under plurality voting.Voters typically cast one vote per race. Maurice Duverger argued there were two main mechanisms by which plurality voting systems lead to fewer major parties: (i) small parties are disincentivized to form because they have great difficulty winning seats or representation, and (ii) voters are wary of voting for a smaller party whose ...

  8. Linear congruential generator - Wikipedia

    en.wikipedia.org/wiki/Linear_congruential_generator

    The second row is the same generator with a seed of 3, which produces a cycle of length 2. Using a = 4 and c = 1 (bottom row) gives a cycle length of 9 with any seed in [0, 8]. A linear congruential generator (LCG) is an algorithm that yields a sequence of pseudo-randomized numbers calculated with a discontinuous piecewise linear equation.

  9. Factorial number system - Wikipedia

    en.wikipedia.org/wiki/Factorial_number_system

    The factorial number system is a mixed radix numeral system: the i -th digit from the right has base i, which means that the digit must be strictly less than i, and that (taking into account the bases of the less significant digits) its value is to be multiplied by (i − 1)! (its place value). Radix/Base. 8. 7. 6.