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  2. Supermodular function - Wikipedia

    en.wikipedia.org/wiki/Supermodular_function

    In mathematics, a supermodular function is a function on a lattice that, informally, has the property of being characterized by "increasing differences." Seen from the point of set functions, this can also be viewed as a relationship of "increasing returns", where adding more elements to a subset increases its valuation.

  3. Map of lattices - Wikipedia

    en.wikipedia.org/wiki/Map_of_lattices

    An orthocomplemented lattice is complemented. (def) 8. A complemented lattice is bounded. (def) 9. An algebraic lattice is complete. (def) 10. A complete lattice is bounded. 11. A heyting algebra is bounded. (def) 12. A bounded lattice is a lattice. (def) 13. A heyting algebra is residuated. 14. A residuated lattice is a lattice. (def) 15. A ...

  4. Lattice model (finance) - Wikipedia

    en.wikipedia.org/wiki/Lattice_model_(finance)

    Binomial Lattice for equity, with CRR formulae Tree for an bond option returning the OAS (black vs red): the short rate is the top value; the development of the bond value shows pull-to-par clearly . In quantitative finance, a lattice model [1] is a numeric approach to the valuation of derivatives in situations requiring a discrete time model.

  5. Lattice (order) - Wikipedia

    en.wikipedia.org/wiki/Lattice_(order)

    A lattice is an abstract structure studied in the mathematical subdisciplines of order theory and abstract algebra.It consists of a partially ordered set in which every pair of elements has a unique supremum (also called a least upper bound or join) and a unique infimum (also called a greatest lower bound or meet).

  6. Duality theory for distributive lattices - Wikipedia

    en.wikipedia.org/wiki/Duality_theory_for...

    The map φ + is a lattice isomorphism from L onto the lattice of all compact open subsets of (X,τ +). In fact, each spectral space is homeomorphic to the prime spectrum of some bounded distributive lattice. [3] Similarly, if φ − (a) = {x∈ X : a ∉ x} and τ − denotes the topology generated by {φ − (a) : a∈ L}, then (X,τ −) is ...

  7. Complemented lattice - Wikipedia

    en.wikipedia.org/wiki/Complemented_lattice

    Hasse diagram of a complemented lattice. A point p and a line l of the Fano plane are complements if and only if p does not lie on l.. In the mathematical discipline of order theory, a complemented lattice is a bounded lattice (with least element 0 and greatest element 1), in which every element a has a complement, i.e. an element b satisfying a ∨ b = 1 and a ∧ b = 0.

  8. Join and meet - Wikipedia

    en.wikipedia.org/wiki/Join_and_meet

    A partially ordered set that is both a join-semilattice and a meet-semilattice is a lattice. A lattice in which every subset, not just every pair, possesses a meet and a join is a complete lattice. It is also possible to define a partial lattice, in which not all pairs have a meet or join but the operations (when defined) satisfy certain axioms ...

  9. Optimal labor income taxation - Wikipedia

    en.wikipedia.org/wiki/Optimal_labor_income_taxation

    The mechanical effect is the effect that the tax change would have on government revenue, if no individuals changed their behaviour in response. For a tax increase, this is positive. The behavioural effect is the effect that the behavioural change induced by the tax change would have on government revenue, at the initial tax rates. Raising ...