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The lexico-smallest representation of convex polyhedra

Stefano Picozzi

Every convex polyhedron in the Euclidean space

R^d

admits both H- and V-representation. For both formats, a representation is canonical if it is minimal and unique up to some elementary operations. In this paper, we extend the usual definition of canonic ...

2003

A note on the torsion dependence of D-brane RR couplings

Claudio Scrucca

The dependence on the torsion H = dh of the Wess-Zumino couplings of D-branes that are trivially embedded in space-time is studied. We show that even in this simple set-up some torsion components can be turned on, with a non-trivial effect on the RR coupli ...

2001

The packing stress of impregnated fiber mats

Véronique Michaud

The parameters affecting the packing stress of fiber mats for melt impregnation, resin transfer molding and compression molding are systematically investigated. An analytical equation based on local bending of fibers, which was previously derived for non-i ...

2001

Learning with Labeled and Unlabeled Data

Matthias Seeger

In this paper, on the one hand, we aim to give a review on literature dealing with the problem of supervised learning aided by additional unlabeled data. On the other hand, being a part of the author's first year PhD report, the paper serves as a frame to ...

2000

Anomalous couplings for D-branes and O-planes

Claudio Scrucca

We study anomalous Wess-Zumino couplings of D-branes and O-planes in a general background and derive them from a direct string computation by factorizing in the RR channel various one-loop amplitudes, In particular, we find that Op-planes present gravitati ...

1999

Computing Roots of Polynomials over Function Fields of Curves

Mohammad Amin Shokrollahi

Let K/Fq be an elliptic function field. For every natural number n we determine the number of prime divisors of degree n of K/Fq which lie in a given divisor class of K ...

Springer1999

Nef-mediated clathrin-coated pit formation

Didier Trono

The sequence of events leading to clathrin-coated pit (CCP) nucleation on the cell surface and to the incorporation of receptors into these endocytic structures is still imperfectly understood. In particular, the question remains as to whether receptor tai ...

1997

The lexico-smallest representation of convex polyhedra

Stefano Picozzi

Every convex polyhedron in the Euclidean space

R^d

2003