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961.
In this article, the question is considered whether there exist finite translation planes with arbitrarily small kernels admitting nonsolvable collineation groups. For any integerN, it is shown that there exist translation planes of dimension >N and orderq
3 admittingGL(2,q) as a collineation group. 相似文献
962.
Translated from Matematicheskie Zametki, Vol. 49, No. 6, pp. 92–97, June, 1991. 相似文献
963.
964.
965.
A new microscopic model of anomalous muonium for the elemental semiconductors is proposed. The relevant configuration consisting
of both a diamagrentic molecule Si−Mu and an unpaired orbital e− is contained into a semivacancy of the real lattice. By using the unrestricted Hartree-Fock computational method the principal
properties of the system are established. A dynamical version of the model together with a question on the formation of such
system are discussed. 相似文献
966.
An explicit expression is obtained for the Green's functions of a massive scalar field for nonnull temperatures and density in the form of a series in powers of m/T. The equivalence of the spectral-geometric approach and the temperature technique of Matsubara and Bernard is demonstrated. Corrections to the Stefan-Boltzmann law are obtained on the basis of the calculated Green's functions. The energy density is calculated in regions of high and low temperatures. The formulas obtained can prove to be useful in the discussion of the phase transition hadrons-quark-gluon plasma.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 32–40, July, 1991. 相似文献
967.
968.
A random-medium model which is a correlated distribution of points (particles) randomly positioned in the 3-dimensional space
is considered. The construction of the medium starts from a noncorrelated (Poisson) distribution of parent particles, each
of them initiates a finite Markov chain of its descendants. The complete collection of correlation functions of all orders
within the scope of the model have been obtained. The use of the 3-dimensional stable law (Lévy law) as a transition probability
allows us to present the correlation function in an explicit form.
Proceedings of the XVII Seminar on Stability Problems for Stochastic Models, Kazan, Russian, 1995, Part II. 相似文献
969.
V. G. Lomadze 《Acta Appl Math》1994,34(3):305-312
Kalman's theory is extended to a complete, smooth, and irreducible algebraic curve of arbitrary genus. 相似文献
970.
A method is proposed for evaluating the resistance of a flywheel rim to radial stresses in free rotation. The method is based on loading a rim segment in pure bending and calculating the limiting moment and the corresponding limiting angular velocity. Applicability of the method is substantiated theoretically by investigating the similarity of the radial stress diagrams in rotation and pure bending. The method is verified experimentally for the strained state of a rim segment in pure bending.Translated from Mekhanika Kompozitnykh Materialov, Vol. 29, No. 4, pp. 521–526, July–August, 1993. 相似文献