Afișare rezultate

SM ISO690:2012

The rational bases of GL(2;R)-comitants and of invariants for the bidimensional system of differential equations with nonlinearities of the fourth degree

Calin Iurie12, Ciubotaru Stanislav1

1 Institute of Mathematics and Computer Science ASM, 2 Moldova State University

Conference of Mathematical Society of the Republic of Moldova

3. 2014. Chișinău. ISBN 978-9975-68-244-2.

Disponibil online 9 October, 2017. Descarcări-2. Vizualizări-599

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On periodic solutions of the four-dimensional differential system of Lyapunov-Darboux type with quadratic nonlinearities

Orlov Victor12, Popa Mihail2

1 Technical University of Moldova, 2 Institute of Mathematics and Computer Science ASM

Conference of Mathematical Society of the Republic of Moldova

4. 2017. Chişinău. ISBN 978-9975-71-915-5.

Disponibil online 5 October, 2017. Descarcări-2. Vizualizări-709

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On stability of some examples of ternary differential critical systems with quadratic nonlinearities

Neagu Natalia1, Popa Mihail2

1 "Ion Creangă" State Pedagogical University from Chisinau, 2 Vladimir Andrunachievici Institute of Mathematics and Computer Science, MSU

Acta et commentationes (Ştiinţe Exacte și ale Naturii)

Nr. 2(16) / 2023 / ISSN 2537-6284 /ISSNe 2587-3644

Disponibil online 25 January, 2024. Descarcări-1. Vizualizări-91

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Problems of the theory of invariants and Lie algebras applied in the qualitative theory of differential systems

Popa Mihail

Vladimir Andrunachievici Institute of Mathematics and Computer Science

Acta et commentationes (Ştiinţe Exacte și ale Naturii)

Nr. 2(14) / 2022 / ISSN 2537-6284 /ISSNe 2587-3644

Disponibil online 24 February, 2023. Descarcări-0. Vizualizări-197

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Lyapunov’s stability of the unperturbed motion governed by the s3(1,3) differential system of Darboux type

Neagu Natalia1, Popa Mihail23

1 "Ion Creangă" State Pedagogical University from Chisinau, 2 Tiraspol State University, 3 Vladimir Andrunachievici Institute of Mathematics and Computer Science

Acta et commentationes (Ştiinţe Exacte și ale Naturii)

Nr. 2(12) / 2021 / ISSN 2537-6284 /ISSNe 2587-3644

Disponibil online 10 February, 2022. Descarcări-2. Vizualizări-328

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Invariant conditions of stability of motion for some four-dimensional differential systems

Orlov Victor

Technical University of Moldova

Acta et commentationes (Ştiinţe Exacte și ale Naturii)

Nr. 2(6) / 2018 / ISSN 2537-6284 /ISSNe 2587-3644

Disponibil online 31 July, 2019. Descarcări-3. Vizualizări-723

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Center-affine invariant conditions of stability of unperturbed motion for differential system s(1,2,3) with quadratic part of Darboux type

Neagu Natalia1, Orlov Victor2

1 "Ion Creangă" State Pedagogical University from Chisinau, 2 Technical University of Moldova

Acta et commentationes (Ştiinţe Exacte și ale Naturii)

Nr. 2(6) / 2018 / ISSN 2537-6284 /ISSNe 2587-3644

Disponibil online 31 July, 2019. Descarcări-6. Vizualizări-637

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Methods of lie algebras and orbits in the study of differential systems concerned with the problems of energy safety of the Republic of Moldova

Popa Mihail1, Bîcova Elena2, Staruş Elena1, Gherştega Natalia3

1 Institute of Mathematics and Computer Science ASM, 2 Institute of Power Engineering of ASM, 3 Tiraspol State University

Energetica Moldovei. Aspecte regionale de dezvoltare

Ediția I. 2005. Chișinău, Republica Moldova. ISBN 9975-62-145-7.

Disponibil online 31 July, 2018. Descarcări-3. Vizualizări-750

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About classification of AFF (2, R ) - orbit’s dimensions for quadratic differential system for K5≡ 0

Orlov Victor, Gherştega Natalia

Institute of Mathematics and Computer Science ASM

International Conference of Young Researchers

Ediția 6. 2008. Chişinău. ISBN 978-9975-62-196-0.

Disponibil online 25 May, 2021. Descarcări-0. Vizualizări-296

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Generators of the algebras of invariants for differential system with homogeneous nonlinearities of odd degree

Gherştega Natalia, Popa Mihail, Pricop Victor

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 2(69) / 2012 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 15 December, 2013. Descarcări-0. Vizualizări-1086

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About characteristics of graded algebras S1,4 and SI1,4

Gherştega Natalia, Popa Mihail, Pricop Victor

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 1(62) / 2010 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 15 December, 2013. Descarcări-1. Vizualizări-939

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Classification of Aff (2, R)-orbit’s dimensions for quadratic differential system

Gherştega Natalia, Orlov Victor

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 2(57) / 2008 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 9 December, 2013. Descarcări-0. Vizualizări-996

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GL(2,R)-orbits in a competing species model

Georgescu Raluca-Mihaela1, Naidenova Elena2

1 University of Pitesti, 2 Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 1(53) / 2007 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 17 December, 2013. Descarcări-1. Vizualizări-869

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Classification of GL(2,R)-orbit’s dimensions for the differential equations’ system with homogeneities of the 4th order

Naidenova Elena, Popa Mihail, Orlov Victor

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 1(53) / 2007 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 16 December, 2013. Descarcări-0. Vizualizări-987

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Functional bases of centro-affine invariants for the three-dimensional quadratic differential systems

Gherştega Natalia

Tiraspol State University

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 1(50) / 2006 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 14 December, 2015. Descarcări-3. Vizualizări-760

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Lie algebras of the operators and three-dimensional polynomial differential systems

Gherştega Natalia1, Popa Mihail2

1 Tiraspol State University, 2 Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 2(48) / 2005 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 7 December, 2013. Descarcări-5. Vizualizări-966

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Center-affine invariant stability conditions of unperturbed motion governed by critical cubic differential system

Neagu Natalia12, Orlov Victor34, Popa Mihail41

1 Tiraspol State University, 2 "Ion Creangă" State Pedagogical University from Chisinau, 3 Technical University of Moldova, 4 Vladimir Andrunachievici Institute of Mathematics and Computer Science

Proceedings IMCS-55

2019. Chișinău, Republica Moldova. ISBN 978-9975-68-378-4.

Disponibil online 1 November, 2019. Descarcări-2. Vizualizări-585

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The classification of GL(2,R)-orbits’ dimensions for system s(0, 2) and the factorsystem s(0, 1, 2)/GL(2,R)

Staruş Elena

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 1(44) / 2004 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 7 December, 2013. Descarcări-4. Vizualizări-767

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Invariant conditions for the dimensions of the GL(2,R)-orbits for one differential cubic system

Staruş Elena

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 3(43) / 2003 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 7 December, 2013. Descarcări-2. Vizualizări-666

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On rational bases of GL(2,R)-comitants of planar polynomial systems of differential equations

Calin Iurie

Institute of Mathematics and Computer Science ASM

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica

Nr. 2(42) / 2003 / ISSN 1024-7696 /ISSNe 2587-4322

Disponibil online 7 December, 2013. Descarcări-1. Vizualizări-856

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