• Herbrand's theorem is a fundamental result of mathematical logic obtained by Jacques Herbrand (1930). It essentially allows a certain kind of reduction...
    5 KB (787 words) - 13:44, 16 October 2023
  • mathematics, the Herbrand–Ribet theorem is a result on the class group of certain number fields. It is a strengthening of Ernst Kummer's theorem to the effect...
    5 KB (754 words) - 16:36, 21 January 2023
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    arithmetic. The proof uses the above-mentioned, proof-theoretic Herbrand's theorem. Herbrand finished his doctorate at École Normale Supérieure in Paris under...
    6 KB (603 words) - 16:01, 2 September 2023
  • (whereas lower numbering is compatible with passage to subgroups.) Herbrand's theorem states that the ramification groups in the lower numbering satisfy...
    14 KB (2,553 words) - 21:40, 22 May 2024
  • c), R(c, fc), R(fc, fc), R(ffc, c), ...} Herbrand's theorem Herbrandization Herbrand interpretation "Herbrand Semantics". Ebbinghaus, Heinz-Dieter; Flum...
    5 KB (495 words) - 11:12, 10 October 2023
  • formulas in Σ . {\displaystyle \Sigma .} Barwise compactness theorem Herbrand's theorem – reduction of first-order mathematical logic to propositional...
    14 KB (1,948 words) - 18:48, 19 January 2024
  • generalized to apply to non-prenex formulas as well, in order to prove Herbrand's theorem (Herbrand 1930). The resulting formula is not necessarily equivalent to...
    4 KB (591 words) - 17:35, 15 April 2024
  • Moreover, Herbrand's theorem states that if S is unsatisfiable then there is a finite unsatisfiable set of ground instances from the Herbrand universe...
    2 KB (205 words) - 12:35, 10 October 2023
  • sets) Helmholtz theorem (classical mechanics) (physics) Helmholtz's theorems (physics) Herbrand's theorem (logic) Herbrand–Ribet theorem (cyclotomic fields)...
    73 KB (6,015 words) - 12:17, 2 August 2024
  • Gentzen's midsequent theorem, the Craig interpolation theorem, and Herbrand's theorem also follow as corollaries of the cut-elimination theorem. Gentzen's natural...
    19 KB (2,641 words) - 00:58, 6 May 2024