Results 211 to 220 of about 1,191 (241)

On Surjectivity of the Power Maps of Solvable Lie Groups

Journal of Algebra, 2002
In this paper we study surjectivity of the map g↦gn on an arbitrary connected solvable Lie group and describe certain necessary and sufficient conditions for surjectivity to hold.
Chatterjee, Pralay
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Surjectivity of power maps of real algebraic groups

Advances in Mathematics, 2011
In this paper we study the surjectivity of the power maps g↦gn for real points of algebraic groups defined over reals.
Chatterjee, Pralay, Pralay Chatterjee
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Surjections and coverings

International Journal of Computer & Information Sciences, 1984
This paper determines the necessary and sufficient condition under which a collection of sequence covers on a finite set can be induced by a surjection. The relationship of sequence covers and surjections to generalized decomposition of an automaton allowing feedback, is the same as the relationship of partitions and bijections to series-parallel ...
Lena Chang, Arthur T. Poe
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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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Surjectivity of functors on grammars

Mathematical Systems Theory, 1975
We 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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Inheritance of surjectivity for partial differential operators on spaces of real analytic functions

Journal of Mathematical Analysis and Applications, 2004
For an open set Ω⊂Rn let A(Ω) be the space of real analytic functions on Ω. Improving our previous results, we prove a new quantitative characterization of the linear partial differential operators P(D) which are surjective on A(Ω). This implies that P(D)
Michael Langenbruch
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The surjectivity of the Borel mapping in the mixed setting for ultradifferentiable ramification spaces

Monatshefte Fur Mathematik, 2019
We consider r-ramification ultradifferentiable classes, introduced by J. Schmets and M. Valdivia in order to study the surjectivity of the Borel map, and later on also exploited by the authors in the ultraholomorphic context.
Javier Jiménez-Garrido, Javier Sanz, Gerhard Schindl   +2 more
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A Function That Is Surjective on Every Interval

The American Mathematical Monthly, 2016
AbstractWe exhibit a real function that is surjective when restricted to any nonempty open interval.
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Surjectivity and fixed points of relaxed dissipative multifunctions. Differential inclusions approach

Journal of Mathematical Analysis and Applications, 2004
One from the most important properties of accretive and monotone operators is the existence of zeros and surjectivity. In the paper we introduce relaxed variants of dissipative, accretive and monotone operators.
Donchev, Tzanko
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Surjections, Differences, and Binomial Lattices

Studies in Applied Mathematics, 1994
The 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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