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  2. General relativity priority dispute - Wikipedia

    en.wikipedia.org/wiki/General_relativity...

    Albert Einstein's discovery of the gravitational field equations of general relativity and David Hilbert's almost simultaneous derivation of the theory using an elegant variational principle, [B 1]: 170 during a period when the two corresponded frequently, has led to numerous historical analyses of their interaction.

  3. Hilbert's fourth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_fourth_problem

    In mathematics, Hilbert's fourth problem in the 1900 list of Hilbert's problems is a foundational question in geometry.In one statement derived from the original, it was to find — up to an isomorphism — all geometries that have an axiomatic system of the classical geometry (Euclidean, hyperbolic and elliptic), with those axioms of congruence that involve the concept of the angle dropped ...

  4. Relativity priority dispute - Wikipedia

    en.wikipedia.org/wiki/Relativity_priority_dispute

    p. 172: "Although Poincaré's principle of relativity is stated in a manner similar to Einstein's, the difference in content is sharp. The critical difference is that Poincaré's principle admits the existence of the ether, and so considers the velocity of light to be exactly c only when it is measured in coordinate systems at rest in the ether.

  5. Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_problems

    Hilbert's problems are 23 problems in mathematics published by German mathematician David Hilbert in 1900. They were all unsolved at the time, and several proved to be very influential for 20th-century mathematics.

  6. Mathematics of general relativity - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_general...

    The Cauchy problem (sometimes called the initial value problem) is the attempt at finding a solution to a differential equation given initial conditions. In the context of general relativity , it means the problem of finding solutions to Einstein's field equations — a system of hyperbolic partial differential equations — given some initial ...

  7. Einstein–Hilbert action - Wikipedia

    en.wikipedia.org/wiki/EinsteinHilbert_action

    The EinsteinHilbert action in general relativity is the action that yields the Einstein field equations through the stationary-action principle. With the (− + + +) metric signature , the gravitational part of the action is given as [ 1 ]

  8. Riemann–Hilbert problem - Wikipedia

    en.wikipedia.org/wiki/Riemann–Hilbert_problem

    The work of Bridgeland Bridgeland (2019) studies a class of Riemann-Hilbert problems coming from Donaldson-Thomas theory and makes connections with Gromov-Witten theory and exact WKB. The numerical analysis of Riemann–Hilbert problems can provide an effective way for numerically solving integrable PDEs (see e.g. Trogdon & Olver (2016)).

  9. Hilbert's twenty-fourth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_twenty-fourth...

    Hilbert's twenty-fourth problem is a mathematical problem that was not published as part of the list of 23 problems (known as Hilbert's problems) but was included in David Hilbert's original notes. The problem asks for a criterion of simplicity in mathematical proofs and the development of a proof theory with the power to prove that a given ...