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- Title
Strong connections and invertible weak entwining structures.
- Authors
Alonso Álvarez, J.; Fernández Vilaboa, J.; González Rodríguez, R.
- Abstract
In this paper we obtain a criterion under which the bijectivity of the canonical morphism of a weak Galois extension associated to a weak invertible entwining structure is equivalent to the existence of a strong connection form. Also we obtain an explicit formula for a strong connection under equivariant projective conditions or under coseparability conditions.
- Subjects
GEOMETRIC connections; DIFFERENTIAL geometry; CONTACT transformations; EQUIVALENCE relations (Set theory); MORPHISMS (Mathematics); GALOIS theory; FIELD extensions (Mathematics)
- Publication
Acta Mathematica Sinica, 2012, Vol 28, Issue 7, p1443
- ISSN
1439-8516
- Publication type
Article
- DOI
10.1007/s10114-012-0088-1