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  2. Hilbert's seventh problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_seventh_problem

    Hilbert's seventh problem is one of David Hilbert's list of open mathematical problems posed in 1900. It concerns the irrationality and transcendence of certain numbers ( Irrationalität und Transzendenz bestimmter Zahlen ).

  3. Hilbert's seventeenth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_seventeenth_problem

    Hilbert's proof did not exhibit any explicit counterexample: only in 1967 the first explicit counterexample was constructed by Motzkin. [3] Furthermore, if the polynomial has a degree 2 d greater than two, there are significantly many more non-negative polynomials that cannot be expressed as sums of squares.

  4. Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_problems

    Hilbert's problems ranged greatly in topic and precision. Some of them, like the 3rd problem, which was the first to be solved, or the 8th problem (the Riemann hypothesis), which still remains unresolved, were presented precisely enough to enable a clear affirmative or negative answer.

  5. Category:Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Category:Hilbert's_problems

    Hilbert's second problem; Hilbert's third problem; Hilbert's fourth problem; Hilbert's fifth problem; No small subgroup; Hilbert's sixth problem; Hilbert's seventh problem; Hilbert's eighth problem; Hilbert's ninth problem; Hilbert's tenth problem; Hilbert's eleventh problem; Hilbert's twelfth problem; Hilbert's thirteenth problem; Hilbert's ...

  6. Hilbert's thirteenth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_thirteenth_problem

    Hilbert's thirteenth problem is one of the 23 Hilbert problems set out in a celebrated list compiled in 1900 by David Hilbert. It entails proving whether a solution exists for all 7th-degree equations using algebraic (variant: continuous ) functions of two arguments .

  7. Transcendental number - Wikipedia

    en.wikipedia.org/wiki/Transcendental_number

    In 1900 David Hilbert posed a question about transcendental numbers, Hilbert's seventh problem: If a is an algebraic number that is not 0 or 1, and b is an irrational algebraic number, is a b necessarily transcendental? The affirmative answer was provided in 1934 by the Gelfond–Schneider theorem.

  8. Gelfond–Schneider constant - Wikipedia

    en.wikipedia.org/wiki/Gelfond–Schneider_constant

    Part of the seventh of Hilbert's twenty-three problems posed in 1900 was to prove, or find a counterexample to, the claim that a b is always transcendental for algebraic a ≠ 0, 1 and irrational algebraic b. In the address he gave two explicit examples, one of them being the Gelfond–Schneider constant 2 √ 2.

  9. Hilbert's program - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_program

    Hilbert proposed that the consistency of more complicated systems, such as real analysis, could be proven in terms of simpler systems. Ultimately, the consistency of all of mathematics could be reduced to basic arithmetic. Gödel's incompleteness theorems, published in 1931, showed that Hilbert's program was unattainable for key areas of ...