Results 21 to 30 of about 15,289 (298)
Oxygen Vacancies in Oxide Nanoclusters: When Silica Is More Reducible Than Titania
Frontiers in Chemistry, 2019 Oxygen vacancies are related to specific optical, conductivity and magnetic properties in macroscopic SiO2 and TiO2 compounds. As such, the ease with which oxygen vacancies form often determines the application potential of these materials in many ...
Andi Cuko +4 more
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Cook reducibility is faster than Karp reducibility in NP [PDF]
, 1990 It is unknown whether Cook reducibility of a set A to a set B—that is reduction of A to B via a Turing machine operating in polynomial time with “free” procedural calls to an algorithm for B—is more general than Karp reducibility—that is reduction of A ...
Young, Paul, Longpré, Luc
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Σ -Reducibility and lm -Reducibility of Sets and Sequences of Sets [PDF]
Учёные записки Казанского университета: Серия Физико-математические науки, 2016 Limitwise monotonic sets, pairs of sets, and sequences consisting of infinite sets are studied in the paper. The main properties of limitwise monotonic reducibility between two sets, as well as between the set and a pair of sets defined in terms of Σ ...
D.Kh. Zainetdinov
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Directed Diagrammatic Reducibility
, 2020 We introduce the notion of directed diagrammatic reducibility which is a relative version of diagrammatic reducibility. Directed diagrammatic reducibility has strong group theoretic and topological consequences.
Harlander, Jens, Rosebrock, Stephan
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Nonuniform dichotomy spectrum and reducibility for nonautonomous difference equations
Advances in Nonlinear Analysis, 2021 For nonautonomous linear difference equations, we introduce the notion of the so-called nonuniform dichotomy spectrum and prove a spectral theorem. As an application of the spectral theorem, we prove a reducibility result.
Chu Jifeng +4 more
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, 1990 New self-reducibility structures are proposed to deal with sets outside the class PSPACE and with sets in logarithmic space complexity classes. General properties derived from the definition are used to prove known results comparing uniform and ...
Balcázar, JoséL.
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, 2021 In this note, we unify and extend various concepts in the area of \(\it G\)-complete reducibility, where \(\it G\) is a reductive algebraic group. By results of Serre and Bate–Martin–Röhrle, the usual notion of \(\it G\)-complete reducibility can be re ...
Gruchot, Maike Katharina (Dr. rer. nat.) +2 more
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On Relative Complete Reducibility [PDF]
, 2020 Let K be a reductive subgroup of a reductive group G over an algebraically closed field k. The notion of relative complete reducibility, introduced in previous work of Bate-Martin-Roehrle-Tange, gives a purely algebraic description of the closed K-orbits
Röhrle, Gerhard +8 more
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Microporosity of BIF hosted massive hematite ore, Iron Quadrangle, Brazil
Anais da Academia Brasileira de Ciências, 2002 Massive hematite ore (MHO) is a special high-grade iron ore, used as lump ore in the process of obtaining direct reduction iron (DRI). The influence of porosity on the reducibility of MHO from the Capitão do Mato Mine (Iron Quadrangle, Brazil) was ...
CÉSAR A.C. VARAJÃO +3 more
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Mathematics, 2020 The fuzzyfication of hypercompositional structures has developed in several directions. In this note we follow one direction and extend the classical concept of reducibility in hypergroups to the fuzzy case.
Milica Kankaras, Irina Cristea
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