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  2. 2-satisfiability - Wikipedia

    en.wikipedia.org/wiki/2-satisfiability

    In the maximum-2-satisfiability problem (MAX-2-SAT), the input is a formula in conjunctive normal form with two literals per clause, and the task is to determine the maximum number of clauses that can be simultaneously satisfied by an assignment.

  3. Samuel Soal - Wikipedia

    en.wikipedia.org/wiki/Samuel_Soal

    Soal moved to a more statistical and controlled approach, firstly by conducting an experiment in which up to a few hundred persons participated at one time. [5] This involved Soal and a small group of agents enacting a scenario, playing with a certain object, reciting a poem, and so on, which the participants, situated across Great Britain and other countries, were required, at the same time ...

  4. Quadratic equation - Wikipedia

    en.wikipedia.org/wiki/Quadratic_equation

    Figure 1. Plots of quadratic function y = ax 2 + bx + c, varying each coefficient separately while the other coefficients are fixed (at values a = 1, b = 0, c = 0). A quadratic equation whose coefficients are real numbers can have either zero, one, or two distinct real-valued solutions, also called roots.

  5. Algebraic closure - Wikipedia

    en.wikipedia.org/wiki/Algebraic_closure

    In the same way, an extension K 2 of K 1 can be constructed, etc. The union of all these extensions is the algebraic closure of K , because any polynomial with coefficients in this new field has its coefficients in some K n with sufficiently large n , and then its roots are in K n +1 , and hence in the union itself.

  6. Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/Washington,_D.C.

    Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States.The city is on the Potomac River, across from Virginia, and shares land borders with Maryland to its north and east.

  7. Ashton Kutcher - Wikipedia

    en.wikipedia.org/wiki/Ashton_Kutcher

    Christopher Ashton Kutcher (/ ˈ k ʊ tʃ ər /; born February 7, 1978) is an American actor, producer and entrepreneur.Kutcher began his acting career portraying Michael Kelso in the Fox sitcom That '70s Show (1998–2006).