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Англо-русский словарь терминов металлургии и сварки. 2011.
Англо-русский словарь терминов металлургии и сварки. 2011.
CheiRank — Nodes with links in the plane of PageRank and CheiRank The CheiRank is an eigenvector with a maximal real eigenvalue of the Google matrix G * constructed for a directed network with the inverted directions of links. It is similar to the PageRank… … Wikipedia
Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… … Wikipedia
String theory — This article is about the branch of theoretical physics. For other uses, see String theory (disambiguation). String theory … Wikipedia
Penrose-Hawking singularity theorems — The Penrose Hawking singularity theorems are a set of results in general relativity which attempt to answer the question of whether gravity is necessarily singular. These theorems answer this question affirmatively for matter satisfying… … Wikipedia
William Cavendish-Scott-Bentinck, 5th Duke of Portland — William John Cavendish Cavendish Scott Bentinck, 5th Duke of Portland (12 September 1800 – 6 December 1879), styled Lord William Cavendish Scott Bentinck before 1824 and Marquess of Titchfield between 1824 and 1854, was a British aristocratic… … Wikipedia
Petrov classification — In differential geometry and theoretical physics, the Petrov classification describes the possible algebraic symmetries of the Weyl tensor at each event in a Lorentzian manifold.It is most often applied in studying exact solutions of Einstein s… … Wikipedia
Newman-Penrose formalism — The Newman Penrose Formalism is a set of notation developed by Ezra T. Newman and Roger Penrose [cite journal | author= Ezra T. Newman and Roger Penrose | title=An Approach to Gravitational Radiation by a Method of Spin Coefficients |… … Wikipedia
Newman–Penrose formalism — The Newman Penrose Formalism is a set of notation developed by Ezra T. Newman and Roger Penrose[1] for General Relativity. Their notation is an effort to treat General Relativity in terms of spinor notation, which introduces complex forms of the… … Wikipedia
Kerr metric — In general relativity, the Kerr metric (or Kerr vacuum) describes the geometry of spacetime around a rotating massive body. According to this metric, such rotating bodies should exhibit frame dragging, an unusual prediction of general relativity; … Wikipedia
Train track — In the mathematical area of topology, a train track is a family of curves embedded on a surface, meeting the following conditions: #The curves meet at a finite set of vertices called switches . #Away from the switches, the curves are smooth and… … Wikipedia
Numerical relativity — is one of the branches of general relativity that uses numerical methods and algorithms to solve and analyze problems. To this end, supercomputers are often employed to study black holes, gravitational waves, neutron stars and many other… … Wikipedia