Concerning resolvent kernels of Volterra integral equations
Jozef Nagy, Eva Nováková (1971)
Commentationes Mathematicae Universitatis Carolinae
Hernandez-Lerma, O., Lasserre, J.B. (1997)
Journal of Convex Analysis
Louis Boutet de Monvel (1994/1995)
Séminaire de théorie spectrale et géométrie
Sami Mustapha, François Vigneron (2007)
Annales de l’institut Fourier
Given a smooth family of vector fields satisfying Chow-Hörmander’s condition of step 2 and a regularity assumption, we prove that the Sobolev spaces of fractional order constructed by the standard functional analysis can actually be “computed” with a simple formula involving the sub-riemannian distance.Our approach relies on a microlocal analysis of translation operators in an anisotropic context. It also involves classical estimates of the heat-kernel associated to the sub-elliptic Laplacian.
Pierre-Gilles Lemarie (1985)
Annales de l'institut Fourier
On donne un critère très simple de continuité des opérateurs définis par des intégrales singulières sur les espaces de Besov homogènes pour . Quelques exemples, utilisant notamment l’opérateur de paraproduit, illustrent ensuite l’emploi de ce critère.
Y. Meyer (1983/1984)
Séminaire Équations aux dérivées partielles (Polytechnique)
Abdellah Youssfi (1990)
Revista Matemática Iberoamericana
L'objet de ce travail est l'étude de la continuité des opérateurs d'intégrales singulières (au sens de Calderón-Zygmund) sur les espaces de Sobolev Hs. Il complète le travail fondamental de David-Journé [6], concernant le cas s = 0, et ceux de P. G. Lemarié [10] et M. Meyer [11] concernant le cas 0 < s < 1.
Chen, Qiong, Liu, Lanzhe (2009)
International Journal of Open Problems in Computer Science and Mathematics. IJOPCM
Liu Lanzhe, Wang Hua (2006)
Kragujevac Journal of Mathematics
Liu, Lanzhe (2004)
Sibirskij Matematicheskij Zhurnal
Moussai, Madani (2001)
Serdica Mathematical Journal
We study the continuity of pseudo-differential operators on Bessel potential spaces Hs|p (Rn ), and on the corresponding Besov spaces B^(s,q)p (R ^n). The modulus of continuity ω we use is assumed to satisfy j≥0, ∑ [ω(2−j )Ω(2j )]2 < ∞ where Ω is a suitable positive function.
Falaleev, M.V., Sidorov, N.A. (2005)
Lobachevskii Journal of Mathematics
Frederick Bloom (1977)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Louis Boutet de Monvel (1979)
Journées équations aux dérivées partielles
Wojciech Bartoszek (1996)
Annales Polonici Mathematici
We provide sufficient and necessary conditions for asymptotic periodicity of iterates of strong Feller stochastic operators.
Jorge J. Betancor, Isabel Marrero (1997)
Czechoslovak Mathematical Journal
B. W. Schulze (1989)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Guillermo P. Curbera, Werner J. Ricker (2005)
Studia Mathematica
О.Д. Смирнова (1982)
Sibirskij matematiceskij zurnal
Nicolas Lerner (2006)
Bulletin de la Société Mathématique de France
For a principal type pseudodifferential operator, we prove that condition implies local solvability with a loss of 3/2 derivatives. We use many elements of Dencker’s paper on the proof of the Nirenberg-Treves conjecture and we provide some improvements of the key energy estimates which allows us to cut the loss of derivatives from for any (Dencker’s most recent result) to 3/2 (the present paper). It is already known that condition doesnotimply local solvability with a loss of 1 derivative,...