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- Institute of Rural Management AnandIN17 papers
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11 papers · 1 filter
New cases of logarithmic equivalence of Welschinger and Gromov-Witten invariants
Ilia Itenberg, Viatcheslav Kharlamov, Eugenii Shustin
We consider the product of two projective lines equipped with the complex conjugation transforming into and blown up in at most two real, or two complex…
On the homotopy of finite CW-complexes with polycyclic fundamental group
Mihai Damian
Let X be a finite CW-complex of dimension q. If its fundamental group is polycyclic of Hirsch number h>q we show that at least one of the homotopy groups is n…
Relativistic Diffusion in Gödel's Universe
Jacques Franchi
K. Gödel [G1] discovered his celebrated solution to Einstein equations in 1949. Additional contributions were made by Kundt [K] and Hawking-Ellis ([H-E],5.7). On the other hand, a…
Weyl Algebras and Knots
Roger Fenn, Vladimir Turaev
In this paper we push forward results on the invariant -module of a virtual knot investigated by the first named author where is the algebra with two invertibl…
On some relations between generalized associators
B. Enriquez
Let Phi be the KZ associator and Psi_N be its analogue for N-th roots of 1. We prove a hexagon relation for Psi_4. Similarly to the Broadhurst (for Psi_2) and Okuda (for Psi_4) dua…
Coassociative magmatic bialgebras and the Fine numbers
Ralf Holtkamp, Jean-Louis Loday, Maria Ronco
We prove a structure theorem for the connected coassociative magmatic bialgebras. The space of primitive elements is an algebra over an operad called the primitive operad. We prove…