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  2. Jamming (physics) - Wikipedia

    en.wikipedia.org/wiki/Jamming_(physics)

    The jamming phase diagram relates the jamming transition to inverse density, stress and temperature. [2] The density at which systems jam is determined by many factors, including the shape of their components, the deformability of the particles, frictional interparticle forces, and the degree of dispersity of the system. The overall shape of ...

  3. Die forming (plastics) - Wikipedia

    en.wikipedia.org/wiki/Die_Forming_(Plastics)

    Both types rely on a separate extruder for each polymer chemistry. In multi manifold dies, each layer is extruded separately and only combined just before the die lips. This die type is expensive due to the complex tooling required, but can alleviate vast differences in rheological behavior between the various layers.

  4. Transitive relation - Wikipedia

    en.wikipedia.org/wiki/Transitive_relation

    If a relation is transitive then its transitive extension is itself, that is, if R is a transitive relation then R 1 = R. The transitive extension of R 1 would be denoted by R 2, and continuing in this way, in general, the transitive extension of R i would be R i + 1. The transitive closure of R, denoted by R* or R ∞ is the set union of R, R ...

  5. Intransitivity - Wikipedia

    en.wikipedia.org/wiki/Intransitivity

    The first argument of the relation is a row and the second one is a column. Ones indicate the relation holds, zero indicates that it does not hold. Now, notice that the following statement is true for any pair of elements x and y drawn (with replacement) from the set {rock, scissors, paper}: If x defeats y, and y defeats z, then x does not ...

  6. Intransitive dice - Wikipedia

    en.wikipedia.org/wiki/Intransitive_dice

    If each player has one set of Efron's dice, there is a continuum of optimal strategies for one player, in which they choose their die with the following probabilities, where 0 ≤ x ≤ ⁠ 3 / 7 ⁠: [4] P(choose A) = x P(choose B) = ⁠ 1 / 2 ⁠ - ⁠ 5 / 6 ⁠ x P(choose C) = x P(choose D) = ⁠ 1 / 2 ⁠ - ⁠ 7 / 6 ⁠ x

  7. Mostowski collapse lemma - Wikipedia

    en.wikipedia.org/wiki/Mostowski_collapse_lemma

    The Mostowski collapse lemma states that for every such R there exists a unique transitive class (possibly proper) whose structure under the membership relation is isomorphic to (X, R), and the isomorphism is unique. The isomorphism maps each element x of X to the set of images of elements y of X such that y R x (Jech 2003:69).

  8. Topological conjugacy - Wikipedia

    en.wikipedia.org/wiki/Topological_conjugacy

    and : are continuous functions on topological spaces, and . being topologically semiconjugate to means, by definition, that is a surjection such that =.. and being topologically conjugate means, by definition, that they are topologically semiconjugate and is furthermore injective, then bijective, and its inverse is continuous too; i.e. is a homeomorphism; further, is termed a topological ...

  9. Converse relation - Wikipedia

    en.wikipedia.org/wiki/Converse_relation

    In the monoid of binary endorelations on a set (with the binary operation on relations being the composition of relations), the converse relation does not satisfy the definition of an inverse from group theory, that is, if is an arbitrary relation on , then does not equal the identity relation on in general.

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