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  2. Euler brick - Wikipedia

    en.wikipedia.org/wiki/Euler_brick

    A primitive Euler brick is an Euler brick whose edge lengths are relatively prime. A perfect Euler brick is one whose space diagonal is also an integer, but such a brick has not yet been found. Euler brick with edges a , b , c and face diagonals d , e , f

  3. Category:Unsolved problems in number theory - Wikipedia

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

    Pages in category "Unsolved problems in number theory" The following 106 pages are in this category, out of 106 total. This list may not reflect recent changes .

  4. Pythagorean Triangles - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_Triangles

    Chapter 13 relates Pythagorean triangles to rational points on a unit circle, Chapter 14 discusses right triangles whose sides are unit fractions rather than integers, and Chapter 15 is about the Euler brick problem, a three-dimensional generalization of Pythagorean triangles, and related problems on integer-sided tetrahedra.

  5. 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.

  6. Category:Arithmetic problems of solid geometry - Wikipedia

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

    Pages in category "Arithmetic problems of solid geometry" ... Euler brick; H. Heronian tetrahedron This page was last edited on 3 April 2023, at 01:22 (UTC). ...

  7. This video does not show damage from January earthquake in ...

    www.aol.com/video-does-not-show-damage-203414250...

    Footage of a towering plume of smoke near a brick building followed by a panning view past damaged houses was posted to YouTube in April 2024.

  8. 7 warning signs of a bad investment - AOL

    www.aol.com/finance/7-warning-signs-bad...

    One problem with crypto investments is that people often dive in without knowing much about it. Crypto and other alternative investments may not be a bad choice if you know what you’re doing, so ...

  9. Seven Bridges of Königsberg - Wikipedia

    en.wikipedia.org/wiki/Seven_Bridges_of_Königsberg

    Map of Königsberg in Euler's time showing the actual layout of the seven bridges, highlighting the river Pregel and the bridges. The Seven Bridges of Königsberg is a historically notable problem in mathematics. Its negative resolution by Leonhard Euler, in 1736, [1] laid the foundations of graph theory and prefigured the idea of topology. [2]