WorldCat Identities

Povh, Janez 1973-

Overview
Works: 140 works in 172 publications in 2 languages and 675 library holdings
Roles: Author, Editor, Other, Thesis advisor, htt
Classifications: T57.62, 003.3
Publication Timeline
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Most widely held works by Janez Povh
Optimization of polynomials in non-commuting variables by Sabine Burgdorf( )

12 editions published in 2016 in English and held by 274 WorldCat member libraries worldwide

This book presents recent results on positivity and optimization of polynomials in non-commuting variables. Researchers in non-commutative algebraic geometry, control theory, system engineering, optimization, quantum physics and information science will find the unified notation and mixture of algebraic geometry and mathematical programming useful. Theoretical results are matched with algorithmic considerations; several examples and information on how to use NCSOStools open source package to obtain the results provided. Results are presented on detecting the eigenvalue and trace positivity of polynomials in non-commuting variables using Newton chip method and Newton cyclic chip method, relaxations for constrained and unconstrained optimization problems, semidefinite programming formulations of the relaxations and finite convergence of the hierarchies of these relaxations, and the practical efficiency of algorithms
Applied modelling and computing in social sciences by Janez Povh( )

16 editions published in 2015 in English and Undetermined and held by 84 WorldCat member libraries worldwide

In social science outstanding results are yielded by advanced simulation methods, based on state of the art software technologies and an appropriate combination of qualitative and quantitative methods. This book presents examples of successful applications of modelling and computing in social science: business and logistic process simulation and optimization, deeper knowledge extractions from big data, better understanding and predicting of social behaviour and modelling health and environment changes
Osnove poslovne matematike by Ajda Fošner( Book )

1 edition published in 2008 in Slovenian and held by 18 WorldCat member libraries worldwide

On reformulations of nonconvex quadratic programs over convex cones by set-semidefinite constraints( )

1 edition published in 2010 in English and held by 16 WorldCat member libraries worldwide

Metodologija družboslovnega raziskovanja : od zasnove do izvedbe by Urša Lamut( Book )

1 edition published in 2012 in Slovenian and held by 13 WorldCat member libraries worldwide

Semidefinitno programiranje in njegova uporaba by Janez Povh( Book )

1 edition published in 2011 in Slovenian and held by 13 WorldCat member libraries worldwide

Matematične metode v uporabi( Book )

1 edition published in 2010 in Slovenian and held by 12 WorldCat member libraries worldwide

Zbirka rešenih nalog iz operacijskih raziskav by Janez Povh( Book )

1 edition published in 2001 in Slovenian and held by 11 WorldCat member libraries worldwide

On the set-semidefinite representation of nonconvex quadratic programs over arbitrary feasible sets by Gabriele Eichfelder( )

1 edition published in 2011 in English and held by 11 WorldCat member libraries worldwide

SOR '13 proceedings by International Symposium on Operational Research in Slovenia( Book )

1 edition published in 2013 in English and held by 8 WorldCat member libraries worldwide

Matematične metode : zbirka rešenih nalog by Janez Povh( Book )

1 edition published in 2003 in Slovenian and held by 8 WorldCat member libraries worldwide

Ohranjevalci na Banachovih algebrah by Ajda Fošner( Book )

1 edition published in 2009 in Slovenian and held by 7 WorldCat member libraries worldwide

SOR '11 proceedings by International Symposium on Operational Research in Slovenia( Book )

1 edition published in 2011 in English and held by 7 WorldCat member libraries worldwide

Matematične metode elektronski učbenik by Maja Fošner( Book )

1 edition published in 2009 in Slovenian and held by 6 WorldCat member libraries worldwide

Towards the optimum by semidefinite and copositive programming : new approach to approximate hard optimization problems by Janez Povh( Book )

1 edition published in 2009 in English and held by 5 WorldCat member libraries worldwide

V prvem delu monografije predstavimo poleg nekaterih klasičnih, a za nadaljnje branje pomemnih, rezultatov iz linearne algebre in stožčne optimizacije tudi novo metodo za reševanje semidefinitnih programov. Ta metoda, ki smo jo poimenovali Metoda robnih točk, temelji na okrepljeni Lagrangeovi metodi (augmented Lagrangian method), z njo pa lahko rešimo probleme, ki so nerešljivi z metodami notranjih točk, če so le linearne enačbe iz semidefinitnega programa večinoma ortogonalne. V drugem delu prikažemo uporabo semidefinitnega in kopozitivnega programiranja pri reševanju naslednjih NP-težkih problemov iz kombinatorične optimizacije: problem pasovne širine grafa, problem kvadratičnega prirejanja, problem minimalnega prereza in problem delitve grafa. Na koncu pokažemo, kako lahko pristop k tem problemom razširimo še na nekatere druge 0-1 probleme kot so problem neodvisnega števila grafa in problem uravnoteženega ločilca grafa. Najprej predstavimo analizo algoritma za približno računanje pasovne širine grafa, objavljenega v Blum et al., 2000, s posebnim povdarkom na izračunljivosti. Predlagamo tudi učinkovito strategijo za računanje tega algoritma, ki temelji na metodah notranjih točk. V nadaljevanju predstavimo način, kako zapisati probleme kvadratičnega prirejanja, minimalnega prereza in delitve grafa kot kopozitivni program v ustreznem višje dimenzionalnem prostoru. Z uporabo naraščajočega zaporedja stožcev, predlaganega s strani De Klerka, Pasechnika, 2002 in Parrila, 2000, ki po točkah konvergira k stožcu kopozitivnih matrik, dobimo zaporedje semidefinitnih aproksimacijskih modelov za te probleme. Za vsak problem tudi pokažemo, da so že prvi modeli iz omenjenega zaporedja vsaj tako dobri kot najboljši semidefinitni modeli iz literature
SOR '19 proceedings by International Symposium on Operational Research in Slovenia( Book )

1 edition published in 2019 in English and held by 5 WorldCat member libraries worldwide

SOR '21 proceedings : ǂthe ǂ16th International Symposium on Operational Research in Slovenia : September 22 - 24, 2021, online by International Symposium on Operational Research in Slovenia( Book )

1 edition published in 2021 in English and held by 4 WorldCat member libraries worldwide

On the set-semidefinite representation of nonconvex quadratic programs over arbitrary feasible sets by Gabriele Eichfelder( Book )

1 edition published in 2011 in English and held by 4 WorldCat member libraries worldwide

In the paper we prove that any nonconvex quadratic problem over some set KRn with additional linear and binary constraints can be rewritten as a linear problem over the cone, dual to the cone of K-semidefinite matrices. We show that when K is defined by one quadratic constraint or by one concave quadratic constraint and one linear inequality, then the resulting K-semidefinite problem is actually a semidefinite programming problem. This generalizes results obtained by Sturm and Zhang (Math Oper Res 28:246267, 2003). Our result also generalizes the well-known completely positive representation result from Burer (Math Program 120:479495, 2009), which is actually a special instance of our result with K=Rn+
Izbrana poglavja iz operacijskih raziskav by Tina Novak( Book )

1 edition published in 2020 in Slovenian and held by 4 WorldCat member libraries worldwide

On reformulations of nonconvex quadratic programs over convex cones by set-semidefinite constraints by Gabriele Eichfelder( Book )

2 editions published in 2010 in English and held by 4 WorldCat member libraries worldwide

 
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Optimization of polynomials in non-commuting variables
Covers
Applied modelling and computing in social sciences
Alternative Names
Janez Povh matamaiticeoir Slóivéanach

Janez Povh matemàtic eslovè

Janez Povh matematician sloven

Janez Povh matemático esloveno

Janez Povh matematikan slloven

Janez Povh mathématicien slovène

Janez Povh Sloveenia matemaatik

Janez Povh Slovene mathematician

Janez Povh slovenski matematik

Janez Povh wiskundige uit Slovenië

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