Results 181 to 190 of about 330 (211)
FIXED POINTS, EIGENVALUES AND SURJECTIVITY [PDF]
Journal of the Korean Mathematical Society, 2008 Let \(K\) be a closed wedge of the Banach space \(E\) and \(f:K\to K\) be countably condensing and strictly quasibounded. Then \(f\) has a fixed point in \(K\). As a byproduct of this result, the existence of eigenvalues and the surjectivity properties of \(f\) are obtained.
In-Sook Kim
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A surjectivity result for quasibounded operators
Applied Mathematics Letters, 2009 Let \(E\) be a real Banach space, \(\Omega\) be a subset of \(E\) and \(\gamma\) be a measure of noncompactness on \(E.\) A continuous operator \(f:\Omega\to E\) is said to be countably \(k\)-contractive if \(\gamma (f(c))\leq k\gamma(C)\) for each countable bounded set \(C\subseteq \Omega\).
In-Sook Kim
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Surjectivity of functors on grammars
Mathematical Systems Theory, 1975We present a procedure for deciding a sufficient condition for equivalence of context-free grammars. The main focus of the paper is on deciding whether a given functor between two grammars is surjective. An additional theorem gives us the means for deciding a certain type of structural similarity which is defined by the existence of such a functor.
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A Function That Is Surjective on Every Interval
The American Mathematical Monthly, 2016AbstractWe exhibit a real function that is surjective when restricted to any nonempty open interval.
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Surjections, Differences, and Binomial Lattices
Studies in Applied Mathematics, 1994The elementary problem of counting surjections from ann‐set to ak‐set is generalized to that of enumerating solutions ofa1∨ ⋯ ∨an=y, with eachaian atom of thek‐interval [x,y] in a binomial latticeL. WhenLis modular, the number of such solutions is representable as aq‐difference and satisfies a simple recurrence.
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A Family of Surjective Composition Operators
Results in MathematicszbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On the essential minimum and essential surjectivity moduli of linear relations in Banach spaces
Rendiconti Del Circolo Matematico Di Palermo, 2022Zied Garbouj, Skhiri Haïkel
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Some surjectivity theorems for compact perturbations of accretive operators
Nonlinear Analysis: Theory, Methods & Applications, 1984Norimichi Hirano
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