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  2. YKK - Wikipedia

    en.wikipedia.org/wiki/YKK

    The initials YKK stand for Yoshida Kōgyō Kabushiki gaisha (吉田工業株式会社, lit. "Yoshida Manufacturing Corporation") , which was the name of the company from 1945 until 1994. YKK produces fasteners and architectural products at 112 YKK facilities in 70 countries worldwide.

  3. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    The Clay Mathematics Institute officially designated the title Millennium Problem for the seven unsolved mathematical problems, the Birch and Swinnerton-Dyer conjecture, Hodge conjecture, Navier–Stokes existence and smoothness, P versus NP problem, Riemann hypothesis, Yang–Mills existence and mass gap, and the Poincaré conjecture at the ...

  4. YKK (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/YKK_(disambiguation)

    YKK may refer to: YKK Group, a Japanese group of manufacturing companies, and the world's largest zipper manufacturer; Yekîtîya Komunîstên Kurdistan, a former Kurdish communist group in Turkey; Yokohama Kaidashi Kikō, a manga by Hitoshi Ashinano; Kitkatla Water Aerodrome (IATA airport code), Kitkatla, British Columbia, Canada

  5. Zipper - Wikipedia

    en.wikipedia.org/wiki/Zipper

    Zippers with common teeth variations: metal teeth (top), coil teeth and plastic teeth. A zipper (N. America), zip, zip fastener (UK), formerly known as a clasp locker, is a commonly used device for binding together two edges of fabric or other flexible material.

  6. Ocean 2: The Answer - Wikipedia

    en.wikipedia.org/wiki/Ocean_2:_The_Answer

    Ocean 2: The Answer is the sixteenth studio album by the German rock band Eloy, released in 1998. It is a concept album conceived by Frank Bornemann and inspired by Ocean , the most commercially successful German prog rock album ever. [ 9 ]

  7. List of undecidable problems - Wikipedia

    en.wikipedia.org/wiki/List_of_undecidable_problems

    For functions in certain classes, the problem of determining: whether two functions are equal, known as the zero-equivalence problem (see Richardson's theorem); [5] the zeroes of a function; whether the indefinite integral of a function is also in the class. [6] Of course, some subclasses of these problems are decidable.

  8. Newcomb's paradox - Wikipedia

    en.wikipedia.org/wiki/Newcomb's_paradox

    In philosophy and mathematics, Newcomb's paradox, also known as Newcomb's problem, is a thought experiment involving a game between two players, one of whom is able to predict the future. Newcomb's paradox was created by William Newcomb of the University of California 's Lawrence Livermore Laboratory .

  9. Block-stacking problem - Wikipedia

    en.wikipedia.org/wiki/Block-stacking_problem

    The first nine blocks in the solution to the single-wide block-stacking problem with the overhangs indicated. In statics, the block-stacking problem (sometimes known as The Leaning Tower of Lire (Johnson 1955), also the book-stacking problem, or a number of other similar terms) is a puzzle concerning the stacking of blocks at the edge of a table.