نتایج جستجو برای: central extension
تعداد نتایج: 611760 فیلتر نتایج به سال:
Cattle Sciences website at http://beefcattle.ans.oregonstate.edu. 2. Associate Professor, Eastern Oregon Agricultural Research Center – Burns, Oregon State University [email protected] 3. Biological Science Technician, ARS-USDA Burns, OR – [email protected] 4. Associate Professor, Oregon State University Extension Service, Umatilla County Extension randy.mills@oregonsta...
It is known that there exist an infinite number of inequivalent quantizations on a topologically nontrivial manifold even if it is a finitedimensional manifold. In this paper we consider the abelian sigma model in (1+ 1) dimensions to explore a system having infinite degrees of freedom. The model has a field variable φ : S → S. An algebra of the quantum field is defined respecting the topologic...
We consider the U(1) sigma model in the two dimensional spacetime S × R, which is a field-theoretical model possessing a nontrivial topology. It is pointed out that its topological structure is characterized by the zero-mode and the winding number. A new type of commutation relations is proposed to quantize the model respecting the topological nature. Hilbert spaces are constructed to be repres...
The Weil pairing of two element from the torsion of the Jacobian of an algebraic curve may be given by a product of local Hilbert symbols of two special idèles associated to the torsion elements of the Jacobian. On the other hand Arbarello, de Concini and Kac have constructed some central extension of the group of idèles on an algebraic curve, in which the commutator is also equal up to sign to...
در طول دو قرن گذشته و ظهور روسیه بعنوان قدرتی بزرگ در عرصه جهانی و شروع رقابت با سایر قدرت های بین المللی و منطقهای خصوصا با ایران و عثمانی این ئکشور تلاش کرده است تاد از جمعیت کردها در این کشورها در راستای منافع خود بهره برداری کند در قرون 18 و 19 بارها بخشی از کردها برعلیه امپراطوری عثمانی توسط این کشور مورد استفاده قرار گرفت خصوصا در جنگ های سال 1790تا 1798. این ججنگ ها م.جب شد که بخشی از کر...
t he purpose of this study was to examine farm operations cooperation groups in central agricultural zone of delta state, nigeria. all the members of the six selected groups were used for the study. the data which were collected with the use of questionnaire and interview schedule were analyzed with the use of frequency counts, percentages and tobit regression model. most of the members were ...
Knee extension is always performed with coordinated contractions of multiple quadriceps muscle components; however, how the load is shared among them under normal and pathological conditions is unclear. We hypothesized that: the absolute moment generated by each quadriceps component increases with the total knee extension moment; the relative contribution and its dependence on the total knee ex...
The q-Onsager algebra Oq is defined by two generators and relations, called the q-Dolan/Grady relations. We investigate alternating central extension of Oq. was introduced Baseilhac Koizumi, who it current Recently Shigechi gave a presentation attractive, but multitude relations makes unwieldy. In this paper we obtain that involves subset original set very manageable call compact This resembles...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
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