Results 31 to 40 of about 2,981,187 (316)
Closed form solution for p-curves in SO(4) [PDF]
, 2012 This paper describes the solution for p-curves in SO(4) and gives its closed form. The rotational symmetry was exploited in order to simplify the algebra.
Biggs, James +2 more
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International Journal of Applied Mathematics and Computer Science, 2021 The paper proposes an algorithm for safeness verification of a Petri net-based specification of the control part of cyber-physical systems. The method involves a linear algebra technique and is based on the computation of the state machine cover of a ...
Wojnakowski Marcin +3 more
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Spatio-temporal evaluation of ecosystem services in the São Paulo Macrometropolis, Brazil
Revista Brasileira de Ciências Ambientais, 2023 Urbanization is one of the key factors that drive changes in ecosystem services. Although various studies have analyzed relationships between land-cover change and ecosystem services degradation, few have explored the impacts in future scenarios in mega ...
Priscila Ikematsu +1 more
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The exocenter and type decomposition of a generalized pseudoeffect algebra [PDF]
, 2012 We extend to a generalized pseudoeffect algebra (GPEA) the notion of the exocenter of a generalized effect algebra (GEA) and show that elements of the exocenter are in one-to-one correspondence with direct decompositions of the GPEA; thus the exocenter ...
D. Foulis, S. Pulmannová, E. Vinceková
semanticscholar +1 more source
Conflicts and future scenarios of land use in eastern Mexico
Forest Systems, 2022 Aim of study: To develop an analytical framework for analyzing and assessing the land-use changes and conflicts, based on low requirements of information and useful in developing countries.
Gabriel Chablé-Rodríguez +4 more
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The derived category of a non generic cubic fourfold containing a plane
, 2017 We describe an Azumaya algebra on the resolution of singularities of the double cover of a plane ramified along a nodal sextic associated to a non generic cubic fourfold containing a plane.
Moschetti, Riccardo
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Size Bounds and Query Plans for Relational Joins [PDF]
2008 49th Annual IEEE Symposium on Foundations of Computer Science, 2008 Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive and very often dominated by the output size, it is an important task for database query ...
Albert Atserias, Martin Grohe, D. Marx
semanticscholar +1 more source
On the classification of quantum W-algebras
, 1991 In this paper we consider the structure of general quantum W-algebras. We introduce the notions of deformability, positive-definiteness, and reductivity of a W-algebra.
Bowcock, P., Watts, G
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Koszulness, Krull Dimension and Other Properties of Graph-Related Algebras [PDF]
, 2010 The algebra of basic covers of a graph G, denoted by \A(G), was introduced by Juergen Herzog as a suitable quotient of the vertex cover algebra. In this paper we show that if the graph is bipartite then \A(G) is a homogeneous algebra with straightening ...
Constantinescu, Alexandru +1 more
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Vector fields on nonorientable surfaces
International Journal of Mathematics and Mathematical Sciences, 2003 A one-to-one correspondence is established between the germs of functions and tangent vectors on a NOS X and the bi-germs of functions, respectively, elementary fields of tangent vectors (EFTV) on the orientable double cover of X.
Ilie Barza, Dorin Ghisa
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