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  2. Hilbert's fifteenth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_fifteenth_problem

    The entirety of the original problem statement is as follows: The problem consists in this: To establish rigorously and with an exact determination of the limits of their validity those geometrical numbers which Schubert especially has determined on the basis of the so-called principle of special position, or conservation of number, by means of the enumerative calculus developed by him.

  3. Hilbert's second problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_second_problem

    In mathematics, Hilbert's second problem was posed by David Hilbert in 1900 as one of his 23 problems. It asks for a proof that arithmetic is consistent – free of any internal contradictions. Hilbert stated that the axioms he considered for arithmetic were the ones given in Hilbert (1900), which include a second order completeness axiom.

  4. 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.

  5. Riemann hypothesis - Wikipedia

    en.wikipedia.org/wiki/Riemann_hypothesis

    In mathematics, the Riemann hypothesis is the conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part ⁠ 1 / 2 ⁠. Many consider it to be the most important unsolved problem in pure mathematics. [1]

  6. List of theorems - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems

    Mutual fund separation theorem (financial mathematics) Müntz–Szász theorem (functional analysis) Mycielski's theorem (graph theory) Myers theorem (differential geometry) Myhill–Nerode theorem (formal languages)

  7. Carathéodory's theorem (convex hull) - Wikipedia

    en.wikipedia.org/wiki/Carathéodory's_theorem...

    An illustration of Carathéodory's theorem for a square in R 2. Carathéodory's theorem in 2 dimensions states that we can construct a triangle consisting of points from P that encloses any point in the convex hull of P. For example, let P = {(0,0), (0,1), (1,0), (1,1)}. The convex hull of this set is a square. Let x = (1/4, 1/4) in the convex ...

  8. Donald Trump picks warned about social media posts ahead of ...

    www.aol.com/donald-trump-picks-reminder-social...

    President-elect Donald Trump's nominees for jobs in his second term are receiving guidance about social media use ahead of confirmation hearings that will start next week. Susie Wiles, who managed ...

  9. A Course of Pure Mathematics - Wikipedia

    en.wikipedia.org/wiki/A_Course_of_Pure_Mathematics

    A Course of Pure Mathematics is a classic textbook in introductory mathematical analysis, written by G. H. Hardy. It is recommended for people studying calculus. First published in 1908, it went through ten editions (up to 1952) and several reprints. It is now out of copyright in UK and is downloadable from various internet web sites.