You are currently browsing admin’s articles.
Une minute avant sa mort, Einstein revit des moments de sa vie personnelle et scientifique. Les principaux personnages de cette pièce sont Einstein, Bohr, les deux fils d’Einstein, Mileva, Brecht, Freud, Besso et une journaliste.
QUAND L’ESPACE FIT PERDRE SON TEMPS AU TEMPS OU UNE MINUTE DE LA VIE D’EINSTEIN (2007)
G.E. Reyes, Embedding manifolds with boundary in smooth toposes, Cahiers de Top. et Geom. Diff. Catég., (48), 83-103, (2007). We embed fully and faithfully the category of manifolds with boundary in some “smooth” toposes. We show that the embedding preserves open coverings and some products. Furthermore, it sends a Weil’s prolongation of a manifold by a Weil algebra into the embedded manifold raised to the associated infinitesimal space of the algebra. Our main tool is to “double” the manifold with boundary to obtain one without boundary.