Articles with "morphism" as a keyword



On the number of connected components of the ramification locus of a morphism of Berkovich curves

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Published in 2017 at "Mathematische Annalen"

DOI: 10.1007/s00208-018-1668-x

Abstract: Let k be a complete nontrivially valued non-archimedean field. Given a finite morphism of quasi-smooth k-analytic curves that admit finite triangulations, we provide upper bounds for the number of connected components of the ramification locus in… read more here.

Keywords: connected components; components ramification; morphism; ramification locus ... See more keywords

An alternative perspective on phantom morphism notion

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Published in 2025 at "Communications in Algebra"

DOI: 10.1080/00927872.2025.2491581

Abstract: Abstract Let α:M→N be a morphism of left R-modules, and let L be a left R-module. We define α to be an L-phantom morphism if, for any morphism g:L→M , the composition αg factors through… read more here.

Keywords: phantom morphisms; phantom; morphism; alternative perspective ... See more keywords