David Gottlieb 1944–2008
Claude Le Bris, Anthony T. Patera (2009)
ESAIM: Mathematical Modelling and Numerical Analysis
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Displaying similar documents to “A remarkably interesting, simple P.D.E.”
David Gottlieb 1944–2008
Powerful amicable numbers
Paul Pollack (2011)
Colloquium Mathematicae
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Tłumaczenie: Lew Pontraingin, O ciągłych ciałach algebraicznych
Jerzy Pogonowski (2018)
Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia
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Tłumaczenie
MkIV Hybrid Technology
Hans Hagen (2011)
Zpravodaj Československého sdružení uživatelů TeXu
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The paper presents development, new features and tools of LuaTeX and ConTeXtMkIV.
PROBLEMS
M. Chrobak, M. Habib, P. John, H. Sachs, H. Zernitz, J. R. Reay, G. Sierksma, M. M. Sysło, T. Traczyk, W. Wessel (1987)
Applicationes Mathematicae
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One Erdös style inequality
Tomáš J. Kepka, Petr C. Němec (2019)
Commentationes Mathematicae Universitatis Carolinae
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One unusual inequality is examined.
MetaPost Definitions
Taco Hoekwater (2020)
Zpravodaj Československého sdružení uživatelů TeXu
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The paper presents all syntactic rules for definitions in MetaPost. It contains many good and bad examples of definitions.
The Lvov years of Wacław Sierpiński
Andrzej Schinzel (2009)
Banach Center Publications
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An account is given of Sierpiński's activity in Lvov (1908-1918) interrupted by World War I.
Interviews with Sidney Altman, Victor Lawrence, James McClellan and Charles Ferguson
Sendova, Evgenia (2015)
Serdica Journal of Computing
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Interviews
Linear transformations of Wiener process that born Wiener process, Brownian bridge or Ornstein-Uhlenbeck process
Petr Lachout (2001)
Kybernetika
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The paper presents a discussion on linear transformations of a Wiener process. The considered processes are collections of stochastic integrals of non-random functions w.r.t. Wiener process. We are interested in conditions under which the transformed process is a Wiener process, a Brownian bridge or an Ornstein –Uhlenbeck process.
BPMN Analysis of Public Procurement
Semerdjieva, Maria, Krastev, Evgeniy (2012)
Serdica Journal of Computing
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ACM Computing Classification System (1998): D.0, D.2.11. This paper formulates a realistic case study of a public procurement process, where the national legal system is taken in consideration. Business Process Modeling Notation (BPMN) is used for encoding processes related to the analysis of public procurement tasks. Critical elements in the public procurement process that affect time, quality and cost are identified at the organizational, process execution and system levels....
Creating a Kanji Stroke Order Font
Timothy Eyre (2010)
Zpravodaj Československého sdružení uživatelů TeXu
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This article describes how a font that displays Kanji Stroke Orders can be created from thousands of svg files containing this information.
A letter to Bohuš
Mirna Džamonja (2019)
Commentationes Mathematicae Universitatis Carolinae
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A few words about an old friend and a long-standing society.
A note on Professor Jan Grzegorz Krzyż
Eligiusz Złotkiewicz (2011)
Annales UMCS, Mathematica
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A Z-set unknotting theorem for Nöbeling spaces
Michael Levin (2009)
Fundamenta Mathematicae
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We prove a Z-set unknotting theorem for Nöbeling spaces.
Professor Grzegorz Malinowski in Honorem
Andrzej Indrzejczak, Janusz Ciuciura (2017)
Bulletin of the Section of Logic
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Estimation of the noncentrality matrix of a noncentral Wishart distribution with unit scale matrix. A matrix generalization of Leung's domination result.
Heinz Neudecker (2004)
SORT
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The main aim is to estimate the noncentrality matrix of a noncentral Wishart distribution. The method used is Leung's but generalized to a matrix loss function. Parallelly Leung's scalar noncentral Wishart identity is generalized to become a matrix identity. The concept of Löwner partial ordering of symmetric matrices is used.
Integral formula for secantoptics and its application
Witold Mozgawa, Magdalena Skrzypiec (2012)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica
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Some properties of secantoptics of ovals defined by Skrzypiec in 2008 were proved by Mozgawa and Skrzypiec in 2009. In this paper we generalize to this case results obtained by Cieslak, Miernowski and Mozgawa in 1996 and derive an integral formula for an annulus bounded by a given oval and its secantoptic. We describe the change of the area bounded by a secantoptic and find the differential equation for this function. We finish with some examples illustrating the above results. ...