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  2. Nathan Altshiller Court - Wikipedia

    en.wikipedia.org/wiki/Nathan_Altshiller_Court

    In 1935 he published the solid geometry textbook Modern Pure Solid Geometry [10] and became a full professor at the University of Oklahoma. He continued teaching there until his retirement in 1951. College Geometry was continually in print without revision for over 25 years, but a revised edition was published in 1952. [5]

  3. Category:Unsolved problems in geometry - Wikipedia

    en.wikipedia.org/wiki/Category:Unsolved_problems...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  4. Walsh diagram - Wikipedia

    en.wikipedia.org/wiki/Walsh_diagram

    Walsh Diagram of an HAH molecule. Walsh diagrams, often called angular coordinate diagrams or correlation diagrams, are representations of calculated orbital binding energies of a molecule versus a distortion coordinate (bond angles), used for making quick predictions about the geometries of small molecules.

  5. List of unsolved problems in chemistry - Wikipedia

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

    Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?

  6. Mathematics education in the United States - Wikipedia

    en.wikipedia.org/wiki/Mathematics_education_in...

    A typical sequence of secondary-school (grades 6 to 12) courses in mathematics reads: Pre-Algebra (7th or 8th grade), Algebra I, Geometry, Algebra II, Pre-calculus, and Calculus or Statistics. However, some students enroll in integrated programs [ 3 ] while many complete high school without passing Calculus or Statistics.

  7. Outline of geometry - Wikipedia

    en.wikipedia.org/wiki/Outline_of_geometry

    Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. Geometry is one of the oldest mathematical sciences. Geometry is one of the oldest mathematical sciences.

  8. List of unsolved problems in mathematics - Wikipedia

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

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  9. Thébault's theorem - Wikipedia

    en.wikipedia.org/wiki/Thébault's_theorem

    However, in 2003, Jean-Louis Ayme discovered that Sawayama Yuzaburo , an instructor at The Central Military School of Tokyo, independently proposed and solved this problem in 1905. [ 5 ] An "external" version of this theorem, where the incircle is replaced by an excircle and the two additional circles are external to the circumcircle, is found ...

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