Results 51 to 60 of about 11,941,652 (143)

Boundedness and surjectivity in normed spaces [PDF]

open access: yes, 2002
We define the (w* -) boundedness property and the (w* -) surjectivity property for sets in normed spaces. We show that these properties are pairwise equivalent in complete normed spaces by characterizing them in terms of a category-like property called ...
Olav Nygaard, Olav Nygaard
core   +1 more source

Complexity of Deciding Injectivity and Surjectivity of ReLU Neural Networks [PDF]

open access: yes
Neural networks with ReLU activation play a key role in modern machine learning. In view of safety-critical applications, the verification of trained networks is of great importance and necessitates a thorough understanding of essential properties of the
Froese, Vincent   +2 more
core   +1 more source

Constant power maps on Hardy fields and transseries

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 3, September 2026.
Abstract Let T$\mathbb {T}$ be the differential field of logarithmic‐exponential transseries. We consider the expansion of T$\mathbb {T}$ by the binary map that sends a positive transseries f$f$ and a real number r$r$ to the transseries fr$f^r$, together with a constant symbol for the real number e$\mathrm{e}$. Building on recent work of Aschenbrenner,
Elliot Kaplan
wiley   +1 more source

Surjectivity need not be preserved by group localizations [PDF]

open access: yes, 2002
Several examples studied in the literature motivate the question of whether or not all idempotent functors in the category of groups carry surjective homomorphisms into surjective homomorphisms.
Bastardas, Gemma
core   +1 more source

A surjectivity result for nonlinear mappings on uniform spaces and applications [PDF]

open access: yes, 1988
The main purpose of the present paper is to establish a surjectivity result for nonlinear continuous mappings on uniform spaces. Then one can prove that every surjective, continuous and expansive map of an uniform space onto itself has a unique fixed ...
Angelov, Vasil G.
core  

On differentiability and surjectivity of alpha-Lipschitz mappings

open access: yes, 1974
Surjectivity ...
PEJSACHOWICZ, JACOBO, Vignoli A.
core  

Some results on the surjectivity of surface parametrizations [PDF]

open access: yes, 2015
This paper deals with the decision problem of the surjectivity of a rational surface parametrization. We give sufficient conditions for a parametrization to be surjective, and we describe different families of parametrizations that satisfy these criteria.
Villarino Cabellos, Carlos   +4 more
core   +1 more source

Global analiticity and Gevrey surjectivity of the Mizohata operator D_2 + i x^{2k}_2 D_1

open access: yes, 1990
The surjectivity of the Mizohata operator witheven exopnent from the Gevrey space of index s, onto itself and its non-surjectivity is ...
ZANGHIRATI, Luisa, CATTABRIGA L.
core  

Surjectivity of Galois representations associated with quadratic $\mathbb{Q}$-curves

open access: yes, 2016
We prove in this paper an uniform surjectivity result for Galois representations associated with non-CM $\mathbb{Q}$-curves over imaginary quadratic fields, using various tools for the proof, such as Mazur's method, isogeny theorems, Runge's method and ...
LE FOURN, Samuel
core   +1 more source

On the Surjectivity of Certain Maps III: The Unital Set Condition [PDF]

open access: yes, 2020
In this article, for generalized projective spaces with any weights, we prove four main theorems in three different contexts where the Unital Set Condition USC (Definition $2.8$) on ideals is further examined.
Kumar, C P Anil
core   +1 more source

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