463 research outputs found
Recension av Paul Leo Butzer & Dietrich Lohrmann, Science in Western and Eastern Civilization in Carolingian Times
No full textRecension av Paul Leo Butzer & Dietrich Lohrmann, Science in Western and Eastern Civilization in Carolingian Times.</p
Paul Leo Butzer, Dietrich Lohrmann (éd.), Science in Western and Eastern civilization in Carolingian Times (Basel : Birkhäuser, 1993)
No full textPaul Leo Butzer, Dietrich Lohrmann (éd.), Science in Western and Eastern civilization in Carolingian Times (Basel : Birkhäuser, 1993). In: Revue d'histoire des sciences, tome 49, n°4, 1996. Un savant du XVIIIe siècle : R.J. Boscovich. pp. 588-590
Butzer (Paul Leo) et Lohrmann (Dietrich), eds. Science in Western and Eastern Civilizations in Carolingian Times.
No full textJuste David. Butzer (Paul Leo) et Lohrmann (Dietrich), eds. Science in Western and Eastern Civilizations in Carolingian Times. . In: Revue belge de philologie et d'histoire, tome 73, fasc. 4, 1995. Histoire medievale, moderne et contemporaine - Middeleeuwse, moderne en hedendaagse geschiedenis. pp. 1054-1061
Butzer (Paul Leo) et Lohrmann (Dietrich), eds. Science in Western and Eastern Civilizations in Carolingian Times.
No full textJuste David. Butzer (Paul Leo) et Lohrmann (Dietrich), eds. Science in Western and Eastern Civilizations in Carolingian Times. . In: Revue belge de philologie et d'histoire, tome 73, fasc. 4, 1995. Histoire medievale, moderne et contemporaine - Middeleeuwse, moderne en hedendaagse geschiedenis. pp. 1054-1061
Paul Leo Butzer, Dietrich Lohrmann (éd.), Science in Western and Eastern civilization in Carolingian Times (Basel : Birkhäuser, 1993)
No full textPaul Leo Butzer, Dietrich Lohrmann (éd.), Science in Western and Eastern civilization in Carolingian Times (Basel : Birkhäuser, 1993). In: Revue d'histoire des sciences, tome 49, n°4, 1996. Un savant du XVIIIe siècle : R.J. Boscovich. pp. 588-590
Mellin analysis and exponential sampling. Part I: Mellin fractional integrals
No full textThe Mellin transform and the associated convolution integrals are intimately connected with the exponential sampling theorem. In this part we study basic theoretical properties, including Mellin-type fractional integrals. Especially we study in detail the domain and the range of these operators and their semigroup propert
Mellin analysis and exponential sampling. Part II: Mellin differential operators and sampling
No full textHere we introduce a notion of strong fractional derivative and we study the connection with the Hadamard pointwise fractional derivative. We obtain a fractional version of the fundamental theorem of integral and differential calculus. We apply the theory to exponential sampling theorem and we state the reproducing kernel formula in Mellin frame
Sampling Theorems for Stochastic Signals. Appraisal of Paul L. Butzer’s Work
No full textThe sampling reconstruction theory is one of the great areas of the analysis in which Paul Leo Butzer earned longstanding and excellent theoretical results. Thus, we are forced either by earlier exhaustive presentations of his research activity and/or the highly voluminous material to restrict ourselves to a more narrow and precise sub-area in consideration; we discuss here, giving deeper insight, Paul Butzer’s sampling theoretical work with special attention concerning sampling stochastic signals
Eugène Catalan and the rise of Russian science
No full textLes relations du mathématicien français Eugène Catalan avec des savants russes ont débuté à la fin de 1842, quand il fut sollicité de donner des leçons particulières au géographe Pierre de Tchihatchef, en même temps qu'il découvrait, avant sa parution, le premier article signé de Tchébychef. L'éventuelle connexion entre ces deux faits se rattache à un examen des contacts amicaux de Catalan avec Tchébychef ; un autre mathématicien russe lié au précédent, Bouniakowsky, entre alors en scène. L'influence de Catalan sur deux de ses élèves, Orlofï et Frolov, est également mise en lumière, tandis que des relations épisodiques avec Imschenetsky, Sabinine et Vesselofsky sont évoquées. L'écriture des noms russes dans ce résumé est conforme à celle des lettres (en français) retrouvées dans la correspondance de Catalan.Butzer Paul Leo, Jongmans François. Eugène Catalan and the rise of Russian science . In: Bulletin de la Classe des sciences, tome 2, 1991. pp. 59-90
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