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  2. ISO metric screw thread - Wikipedia

    en.wikipedia.org/wiki/ISO_metric_screw_thread

    In practice this means that one can measure the diameter over the threads of a bolt to find ... M3.5 6 - - - M4 7 3 2.5 2 M5 8 4 3 2.5 M6 10 5 4 3 M7 11 - - - M8 13 6 ...

  3. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    However, he declined to accept the prize. [8] For his proof of the Poincaré conjecture, Perelman was awarded the Millennium Prize on March 18, 2010. [9] However, he declined the award and the associated prize money, stating that Hamilton's contribution was no less than his own. [10]

  4. Open-ended question - Wikipedia

    en.wikipedia.org/wiki/Open-ended_question

    This grammatically closed but cognitively open style of questioning, Worley argues, "gives [educators] the best of both worlds: the focus and specificity of a closed question (this, after all, is why teachers use them) and the inviting, elaborating character of an open question". [3] Closed questions, simply require 'opening up' strategies to ...

  5. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    4: 4: Edmund Landau: 1912 Taniyama's problems [3] 36-Yutaka Taniyama: 1955 Thurston's 24 questions [4] [5] 24-William Thurston: 1982 Smale's problems: 18: 14: Stephen Smale: 1998 Millennium Prize Problems: 7: 6 [6] Clay Mathematics Institute: 2000 Simon problems: 15 <12 [7] [8] Barry Simon: 2000 Unsolved Problems on Mathematics for the 21st ...

  6. Septuple meter - Wikipedia

    en.wikipedia.org/wiki/Septuple_meter

    Septuple meter can also be notated by using regularly alternating bars of triple and duple or quadruple meters, for example 4 4 + 3 4, or 6 8 + 6 8 + 9 8, or through the use of compound meters, in which two or three numerals take the place of the expected numerator 7, for example, 2 + 2 + 3 8, or 5 + 2 8. [3]

  7. Wallpaper group - Wikipedia

    en.wikipedia.org/wiki/Wallpaper_group

    Example and diagram for p3m1 Cell structure for p3m1. Orbifold signature: *333; Coxeter notation: [(3,3,3)] or [3 [3]] Lattice: hexagonal; Point group: D 3; The group p3m1 has three different rotation centres of order three (120°). It has reflections in the three sides of an equilateral triangle. The centre of every rotation lies on a ...

  8. Major questions doctrine - Wikipedia

    en.wikipedia.org/wiki/Major_questions_doctrine

    In the years since the Supreme Court adopted the broader version of the major questions doctrine, legal scholars have criticized the doctrine along various lines. [3] These include arguments that the major questions doctrine is a symptom of "judicial self-aggrandizement," [ 4 ] that it is inconsistent with both textualism and originalism, [ 5 ...

  9. Crystallographic point group - Wikipedia

    en.wikipedia.org/wiki/Crystallographic_point_group

    In Schoenflies notation, point groups are denoted by a letter symbol with a subscript. The symbols used in crystallography mean the following: C n (for cyclic) indicates that the group has an n-fold rotation axis.