Results 11 to 20 of about 330 (211)
Surjectively rigid chains [PDF]
Mathematical Logic Quarterly, 2020 AbstractWe study rigidity properties of linearly ordered sets (chains) under automorphisms, embeddings, epimorphisms, and endomorphisms. We focus on two main cases: dense subchains of the real numbers, and uncountable dense chains of higher regular cardinalities.
Mayra Montalvo-Ballesteros +1 more
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Multilinear polynomials are surjective on algebras with surjective inner derivations [PDF]
Journal of Algebra, 2021 Let $f(X_1,\dots, X_n)$ be a nonzero multilinear noncommutative polynomial. If $A$ is a unital algebra with a surjective inner derivation, then every element in $A$ can be written as $f(a_1,\dots,a_n)$ for some $a_i\in A$.
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Surjectivity in Fréchet Spaces [PDF]
Journal of Optimization Theory and Applications, 2019 We prove surjectivity result in Fréchet spaces of Nash-Moser type. That is, with uniform estimates over all semimorms. Our method works for functions which are only continuous and Gâteaux differentiable like in the recent result of Ekeland. We present the results in multi-valued setting exploring the relevant notions of map regularity.
Milen Ivanov, Nadia Zlateva
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Bulletin of the Polish Academy of Sciences Mathematics, 2004 Summary: In [Fundam. Math. 151, 47--52 (1996; Zbl 0860.54028)], \textit{M.~Levin} proved that the set of all Bing maps of a compact metric space to the unit interval is a dense \(G_\delta\)-subset of the space of all maps. In [Bull. Pol. Acad. Sci. Math.
Kato, Hisao, Matsuhashi, Eiichi
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Smooth Surjections Without Surjective Restrictions
Journal of Geometric Analysis, 2012 Let f : E -> F be a surjective mapping between two real or complex Banach spaces, with f having some strong differentiability properties. We investigate when there is a smaller Banach space G subset of E such that the restriction of f to G remains surjective.
Aron, Richard M. +2 more
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Smooth surjections and surjective restrictions
Annales Academiae Scientiarum Fennicae Mathematica, 2017 11 pages, a small mistake in the proof of Theorem 8 has been ...
Aron, Richard M. +3 more
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Surjective Mappings Whose Differential is Nowhere Surjective [PDF]
Proceedings of the American Mathematical Society, 1991 Examples of C k {C^k}
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Surjective polymorphisms of reflexive cycles
CoRR, 2022 A reflexive cycle is any reflexive digraph whose underlying undirected graph is a cycle. Call a relational structure Slupecki if its surjective polymorphisms are all essentially unary. We prove that all reflexive cycles of girth at least 4 have this property.
Isabelle Larivière +2 more
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Comptes Rendus. Mathématique, 2023 Let $G$ be a connected reductive group over a number field $F$, and let $S$ be a set (finite or infinite) of places of $F$. We give a necessary and sufficient condition for the surjectivity of the localization map from $H^1(F,G)$ to the “direct sum” of ...
Borovoi, Mikhail
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SURJECTIVE VISUAL SENSATIONS [PDF]
The American Journal of the Medical Sciences, 1896 n ...
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