We study the supersymmetric quantum mechanical systems that arise from discrete light cone quantization of theories with minimal supersymmetry in various dimensions. These systems which have previously arisen in the study of black hole moduli spaces, are distinguished by having fewer fermionic fields than the familiar Kähler and hyper-Kähler models. This is a contribution to the Yuri Golfand me...

The article explores the context important for analysis of Lotman’s talk at seminar on problem semiogenesis and functional specialization cerebral hemispheres as a model intellectual processes, which was held in Tartu. Forty years later, author anal­yses changes viewpoints proposed model, taking into account data experi­mental neuroscience. emphasizes fundamental value topicality Yuri ideas pro...

A certain representation for the Heisenberg algebra in finitedifference operators is established. The Lie-algebraic procedure of discretization of differential equations with isospectral property is proposed. Using sl2-algebra based approach, (quasi)-exactlysolvable finite-difference equations are described. It is shown that the operators having the Hahn, Charlier and Meixner polynomials as the...

March 1997 (revised July 1997) ISSN 1100{0686 Some Undecidable Problems Related to the Herbrand Theorem Yuri Gurevich Margus Veanes EECS Department Computing Science Department University of Michigan Uppsala University Ann Arbor, MI 48109-2122 Box 311, S-751 05 Uppsala USA Sweden [email protected] [email protected] Abstract We improve upon a number of recent undecidability results related to th...

YURI L. MAISTRENKO?†, ANNA VASYLENKO†‡, OLEKSANDR SUDAKOV†q, ROMAN LEVCHENKO† and VOLODYMYR L. MAISTRENKO† ?Institute of Mathematics, National Academy of Sciences of Ukraine, Tereshchenkivska st. 3, 01030, Kyiv, Ukraine, [email protected] †National Scientific Centre for Medical and Biotechnical Research, National Academy of Sciences of Ukraine, Volodymyrska Str. 54, 01030, Kyiv, Ukrai...

Mingkai Liu,1,* Yue Sun,1 David A. Powell,1 Ilya V. Shadrivov,1 Mikhail Lapine,2 Ross C. McPhedran,2 and Yuri S. Kivshar1 1Nonlinear Physics Centre and Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia 2Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Sch...

YURI M. MARUSIK & ALIREZA ZAMANI 1Institute for Biological Problems of the North RAS, Portovaya Str. 18, Magadan 685000, Russia. E-mail: [email protected] 2Department of Zoology & Entomology, University of the Free State, Bloemfontein 9300, South Africa 3Far Eastern Federal University, Sukhanova 8, Vladivostok 690950, Russia 4Zoological Museum, University of Turku, FI-20014 TURKU, Finland 5School ...