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  1. 4 giorni fa · so ( 1, 3) ≡ su ( 2) × su ( 2) ∗. This is a rather confusing formula. What it is trying to say is that the real Lie algebra so ( 3, 1) is the conjugation invariant subspace of its complexification. ( su ( 2) ⊗ C) + ( su ( 2) ⊗ C) where the conjugation interchanges the two factors.

  2. 2 giorni fa · Abstract. We give a new proof, along with some generalizations, of a folklore theorem (attributed to Laurent Lafforgue) that a rigid matroid (i.e., a matroid with indecomposable basis polytope) has only finitely many projective equivalence classes of representations over any given field.

  3. 4 giorni fa · Wormholes, Part Deux. I had thought that the universally negative reaction to the fall 2022 wormhole publicity stunt meant that we’d never hear more about this, with even the editors of Quanta magazine having understood that they’d been had. While away on vacation though, I learned from Dulwich Quantum Computing that all the authors of the ...

  4. 4 giorni fa · Wormholes, Part Deux. Posted on May 27, 2024 by woit. I had thought that the universally negative reaction to the fall 2022 wormhole publicity stunt meant that we’d never hear more about this, with even the editors of Quanta magazine having understood that they’d been had. While away on vacation ….

  5. 4 giorni fa · Laurent Lafforgue. 2018/214 pages. 9782705695453/€28. An epistemological manual. of mathematics. This manual presents the equivalence. between the geometric theory of affine. or Euclidean planes and the algebraic. theory of bodies and their linear or. quadratic equations. Laurent Lafforgue. pedagogically illustrates how. to connect ...

  6. 3 giorni fa · Au Journal officiel du mardi 29 mai 2024, on a appris que par décret du Président de la République en date du 27 mai 2024, pris sur le rapport du Premier ministre et du ministre des armées et visé pour son exécution par le chancelier de l’ordre national du Mérite, vu la déclaration du ...

  7. 23 ore fa · En 2015-2016, le séminaire a lieu un jeudi sur trois (environ) de 16h30 à 18h30, à la Maison des Sciences Economiques, 106-112 boulevard de l’Hôpital, 75013 Paris. Il est ouvert à tous les chercheurs qui souhaitent présenter leurs travaux dans le domaine de l’économie de l’environnement et des ressources naturelles.