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  2. List of Source mods - Wikipedia

    en.wikipedia.org/wiki/List_of_Source_mods

    Nightmare House 2 - A horror-themed modification. The mod won ModDB 2010 Mod of the Year awards for Best Original Art, [8] Best Singleplayer Mod [9] and Player's Choice Mod of the Year [10] categories, eventually winning 2nd place at the latter. Operation Black Mesa - An upcoming remake of the Half-Life expansion Opposing Force developed by ...

  3. Video game modding - Wikipedia

    en.wikipedia.org/wiki/Video_game_modding

    A recurring trend with video game mods is the creation of user-made skins and/or character models replacing the default ones that came with the game, the most popular of which are meme mods such as those of Carl Johnson from Grand Theft Auto: San Andreas and Thomas the Tank Engine, [9] though at least one modder received legal action from ...

  4. Universal coefficient theorem - Wikipedia

    en.wikipedia.org/wiki/Universal_coefficient_theorem

    For example it is common to take A to be Z/2Z, so that coefficients are modulo 2. This becomes straightforward in the absence of 2- torsion in the homology. Quite generally, the result indicates the relationship that holds between the Betti numbers b i of X and the Betti numbers b i , F with coefficients in a field F .

  5. Tarski's theorem about choice - Wikipedia

    en.wikipedia.org/wiki/Tarski's_theorem_about_choice

    The opposite direction was already known, thus the theorem and axiom of choice are equivalent. Tarski told Jan Mycielski that when he tried to publish the theorem in Comptes Rendus de l'Académie des Sciences de Paris, Fréchet and Lebesgue refused to present it. Fréchet wrote that an implication between two well known propositions is not a ...

  6. Diaconescu's theorem - Wikipedia

    en.wikipedia.org/wiki/Diaconescu's_theorem

    In mathematical logic, Diaconescu's theorem, or the Goodman–Myhill theorem, states that the full axiom of choice is sufficient to derive the law of the excluded middle or restricted forms of it. The theorem was discovered in 1975 by Radu Diaconescu [ 1 ] and later by Goodman and Myhill . [ 2 ]

  7. Pollard's p − 1 algorithm - Wikipedia

    en.wikipedia.org/wiki/Pollard%27s_p_%E2%88%92_1...

    Since typically B 1 > 2, d n are even numbers. The distribution of prime numbers is such that the d n will all be relatively small. It is suggested that d n ≤ ln 2 B 2. Hence, the values of H 2, H 4, H 6, … (mod n) can be stored in a table, and H q n be computed from H q n−1 ⋅H d n, saving the need for exponentiations.

  8. Zermelo–Fraenkel set theory - Wikipedia

    en.wikipedia.org/wiki/Zermelo–Fraenkel_set_theory

    Zermelo–Fraenkel set theory with the axiom of choice included is abbreviated ZFC, where C stands for "choice", [1] and ZF refers to the axioms of Zermelo–Fraenkel set theory with the axiom of choice excluded. Informally, [2] Zermelo–Fraenkel set theory is intended to formalize a single primitive notion, that of a hereditary well-founded ...

  9. Structure theorem for finitely generated modules over a ...

    en.wikipedia.org/wiki/Structure_theorem_for...

    In mathematics, in the field of abstract algebra, the structure theorem for finitely generated modules over a principal ideal domain is a generalization of the fundamental theorem of finitely generated abelian groups and roughly states that finitely generated modules over a principal ideal domain (PID) can be uniquely decomposed in much the same way that integers have a prime factorization.