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  2. Lists of unsolved problems - Wikipedia

    en.wikipedia.org/wiki/Lists_of_unsolved_problems

    List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine [ edit ]

  3. 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.

  4. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    The seven selected problems span a number of mathematical fields, namely algebraic geometry, arithmetic geometry, geometric topology, mathematical physics, number theory, partial differential equations, and theoretical computer science. Unlike Hilbert's problems, the problems selected by the Clay Institute were already renowned among ...

  5. Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_problems

    16. Problem of the topology of algebraic curves and surfaces. 17. Expression of definite forms by squares. 18. Building up of space from congruent polyhedra. 19. Are the solutions of regular problems in the calculus of variations always necessarily analytic? 20. The general problem of boundary values (Boundary value problems in PD) 21.

  6. A Topological Picturebook - Wikipedia

    en.wikipedia.org/wiki/A_Topological_Picturebook

    Although the book includes some computer-generated images, [2] most of it is centered on hand drawing techniques. [1] After an introductory chapter on topological surfaces, the cusps in the outlines of surfaces formed when viewing them from certain angles, and the self-intersections of immersed surfaces, the next two chapters are centered on drawing techniques: chapter two concerns ink, paper ...

  7. D-space - Wikipedia

    en.wikipedia.org/wiki/D-space

    Whether every Lindelöf and regular topological space is a D-space is known as the D-space problem. This problem is among twenty of the most important problems of set theoretic topology. This problem is among twenty of the most important problems of set theoretic topology.

  8. Open Problems in Mathematics - Wikipedia

    en.wikipedia.org/wiki/Open_Problems_in...

    First edition. Open Problems in Mathematics is a book, edited by John Forbes Nash Jr. and Michael Th. Rassias, published in 2016 by Springer (ISBN 978-3-319-32160-8).The book consists of seventeen expository articles, written by outstanding researchers, on some of the central open problems in the field of mathematics.

  9. Open problem - Wikipedia

    en.wikipedia.org/wiki/Open_problem

    [2] [3] An important open mathematics problem solved in the early 21st century is the Poincaré conjecture. Open problems exist in all scientific fields. For example, one of the most important open problems in biochemistry is the protein structure prediction problem [4] [5] – how to predict a protein's structure from its sequence.