منابع مشابه
Stability of Harmonic Morphisms to a Surface
Using the fact that harmonic morphisms to a surface have minimal bres, links between the volume-stability of the bres and the energy-stability of the map are found for manifolds without boundary. A stability result for harmonic morphisms from a manifold with boundary to a Riemann surface is also established.
متن کاملOn morphisms of crossed polymodules
In this paper, we prove that the category of crossed polymodules (i.e. crossed modules of polygroups) and their morphisms is finitely complete. We, therefore, generalize the group theoretical case of this completeness property of crossed modules.
متن کاملModuli Spaces of Vector Bundles over a Klein Surface
A compact topological surface S, possibly non-orientable and with non-empty boundary, always admits a Klein surface structure (an atlas whose transition maps are dianalytic). Its complex cover is, by definition, a compact Riemann surface M endowed with an anti-holomorphic involution which determines topologically the original surface S. In this paper, we compare dianalytic vector bundles over S...
متن کاملThe Jacobian of a nonorientable Klein surface , II
The aim here is to continue the investigation in [1] of Jacobians of a Klein surface and also to correct an error in [1].
متن کاملThe Fano Surface of the Klein Cubic Threefold
We prove that the Klein cubic threefold F is the only one cubic threefold which has an order 11 automorphism. We calculate the period lattice of the intermediate Jacobian of F and study its Fano surface S. We compute the set of fibrations of S on a curve of positive genus and the intersection between the fibres of these fibrations. These fibres generate an index 2 sub-group of the Néron-Severi ...
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ژورنال
عنوان ژورنال: Revista Matemática Complutense
سال: 1997
ISSN: 1988-2807,1139-1138
DOI: 10.5209/rev_rema.1997.v10.17340