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Wyszukujesz frazę "transformation," wg kryterium: Wszystkie pola


Tytuł:
On Henricis transformation in optimization
Autorzy:
Rhanizar, B.
Powiązania:
https://bibliotekanauki.pl/articles/1208174.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Henrici's transformation
nonlinear optimization
Opis:
Henrici's transformation is a generalization of Aitken's $Δ^2$-process to the vector case. It has been used for accelerating vector sequences. We use a modified version of Henrici's transformation for solving some unconstrained nonlinear optimization problems. A convergence acceleration result is established and numerical examples are given.
Źródło:
Applicationes Mathematicae; 2000, 27, 2; 127-141
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smoothing a polyhedral convex function via cumulant transformation and homogenization
Autorzy:
Seeger, Alberto
Powiązania:
https://bibliotekanauki.pl/articles/1294577.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
polyhedral convex function
smooth approximation
Laplace transformation
cumulant transformation
homogenization
recession function
Opis:
Given a polyhedral convex function g: ℝⁿ → ℝ ∪ {+∞}, it is always possible to construct a family ${gₜ}_{t>0}$ which converges pointwise to g and such that each gₜ: ℝⁿ → ℝ is convex and infinitely often differentiable. The construction of such a family ${gₜ}_{t>0}$ involves the concept of cumulant transformation and a standard homogenization procedure.
Źródło:
Annales Polonici Mathematici; 1997, 67, 3; 259-268
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Continuous transformation groups on spaces
Autorzy:
Spallek, K.
Powiązania:
https://bibliotekanauki.pl/articles/1312663.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
differentiable spaces
differentiable groups
Lie groups
transformation groups
formal groups
Opis:
A differentiable group is a group in the category of (reduced and nonreduced) differentiable spaces. Special cases are the rationals ℚ, Lie groups, formal groups over ℝ or ℂ; in general there is some mixture of those types, the general structure, however, is not yet completely determined. The following gives as a corollary a first essential answer. It is shown, more generally,that a locally compact topological transformation group, operating effectively on a differentiable space X (which satisfies some mild geometric property) is in fact a Lie group and operates differentiably on X. Special cases have already been known: X a manifold (Montgomery-Zippin), X a reduced (Kerner) or nonreduced (W. Kaup) complex space. The proof requires some analysis on arbitrary differentiable spaces. There one has for example in general no finitely generated ideals as in the case of complex spaces. As a corollary one obtains: The reduction of a locally compact differentiable group is a Lie group (by different methods also proved by Pasternak-Winiarski). It was already proved before that any differentiable group can be uniquely extended to a smallest locally compact differentiable group (as a dense subgroup). The study of the nonreduced parts of differentiable groups remains to be completed.
Źródło:
Annales Polonici Mathematici; 1991, 55, 1; 301-320
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A convolution operation for a distributional Hankel transformation
Autorzy:
J. Betancor, J.
González, B.
Powiązania:
https://bibliotekanauki.pl/articles/1288540.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Hankel transformation
convolution
distributions
Bessel functions
Opis:
We investigate the Hankel transformation and the Hankel convolution on new spaces of generalized functions.
Źródło:
Studia Mathematica; 1995-1996, 117, 1; 57-72
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decompositions of hypersurface singularities oftype $J_{k,0}$
Autorzy:
Jaworski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1311702.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
hypersurface singularity
j-invariant
underdiagonal deformation
shift transformation
quasihomogeneous transformation
Opis:
Applications of singularity theory give rise to many questions concerning deformations of singularities. Unfortunately, satisfactory answers are known only for simple singularities and partially for unimodal ones. The aim of this paper is to give some insight into decompositions of multi-modal singularities with unimodal leading part. We investigate the $J_{k,0}$ singularities which have modality k - 1 but the quasihomogeneous part of their normal form only depends on one modulus.
Źródło:
Annales Polonici Mathematici; 1994, 59, 2; 117-131
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The generic transformation has roots of all orders
Autorzy:
King, Jonathan
Powiązania:
https://bibliotekanauki.pl/articles/965655.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
In the sense of the Baire Category Theorem we show that the generic transformation T has roots of all orders (RAO theorem). The argument appears novel in that it proceeds by establishing that the set of such T is not meager - and then appeals to a Zero-One Law (Lemma 2). On the group Ω of (invertible measure-preserving) transformations, §D shows that the squaring map p: S → S^{2} is topologically complex in that both the locally-dense and locally-lacunary points of p are dense (Theorem 23). The last section, §E, discusses the relation between RAO and a recent example of Blair Madore. Answering a question of the author's, Madore constructs a transformation with a square-root chain of each finite length, yet possessing no infinite square-root chain.
Źródło:
Colloquium Mathematicum; 2000, 84/85, 2; 521-547
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł

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