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4 papers · 1 filter
Formal loops II: A local Riemann-Roch theorem for determinantal gerbes
M. Kapranov, E. Vasserot
If V is a bundle of Tate vector spaces over a base B, its determinantal gerbe has a class C_1(V) in the second cohomology group of the sheaf of invertible functions which can be se…
The boundary motive: definition and basic properties
J. Wildeshaus
We introduce the notion of the boundary motive of a scheme X over a perfect field. By definition, it measures the difference between the motive X and the motive with compact suppor…
Groups acting properly on "bolic" spaces and the Novikov conjecture
Gennadi Kasparov, Georges Skandalis
We introduce a class of metric spaces which we call "bolic". They include hyperbolic spaces, simply conneccted complete manifolds of nonpositive curvature, euclidean buildings, etc…
The computational complexity of the Chow form
Gabriela Jeronimo, Teresa Krick, Juan Sabia +1
We present a bounded probability algorithm for the computation of the Chow forms of the equidimensional components of an algebraic variety. Its complexity is polynomial in the leng…