Nebojša Popov (1939–2016)
نویسندگان
چکیده
منابع مشابه
Computing Valuation Popov Forms
Popov forms and weak Popov forms of matrices over noncommutative valuation domains are defined and discussed. Two new algorithms to construct these Popov forms are given, along with a description of some of their applications.
متن کاملFaddeev Popov Ghosts
These notes are to accompany my talk on gauge xing in quantum eld theories (QFTs), and the mathematical tricks associated with this procedure. In Section 1 I will look at gauge xing for Abelian elds, considering the speci c case of the Maxwell theory describing photons. In Section 2 I consider a non-Abelian generalization of the Maxwell theory called Yang Mills theory, which describes vector bo...
متن کاملPopov Absolute Stability Criterion
This paper extends in a simple way the classical absolute stability Popov criterion to multivariable rational systems with time-varying memoryless nonlinearities subject to sector conditions. The proposed suucient conditions are expressed in terms of easy-to-check Linear Matrix Inequalities , or under a frequency-domain form well-suited for robustness issues, and lead to simple graphical interp...
متن کاملComputing Popov Form of Ore Polynomial Matrices
We show that the computation of the Popov form of Ore polynomial matrices can be formulated as a problem of computing the left nullspace of such matrices. While this technique is already known for polynomial matrices, the extension to Ore polynomial matrices is not immediate because multiplication of the matrix entries is not commutative. A number of results for polynomial matrices are extended...
متن کاملFadeev-popov Ghosts and 1 + 1
Recently Callan, Giddings, Harvey and the author derived a set of one-loop semiclassical equations describing black hole formation/evaporation in two-dimensional dilaton gravity conformally coupled to N scalar fields. These equations were subsequently used to show that an incoming matter wave develops a black hole type singularity at a critical value φ cr of the dilaton field. In this paper a m...
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ژورنال
عنوان ژورنال: Revija za sociologiju
سال: 2016
ISSN: 0350-154X,1846-7954
DOI: 10.5613/rzs.46.1.8