Results 81 to 90 of about 12,772,525 (351)
A quaternionic proof of the representation formula of a quaternary quadratic form [PDF]
, 2004 The celebrated Four Squares Theorem of Lagrange states that every positive integer is the sum of four squares of integers. Interest in this Theorem has motivated a number of different demonstrations. While some of these demonstrations prove the existence
J. Deutsch
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Integrating Products of Quadratic Forms
Discrete & Computational Geometry, 2023 15 ...
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Chirality and Organization of Adsorbates Modify Surface Phonon Dynamics
Advanced Functional Materials, EarlyView.Chirality and molecular organization are shown to influence surface phonon dynamics in gold films. Time‐resolved Joule heating measurements reveal that ordered homochiral monolayers increase the Debye temperature and disordered layers reduce it, while ordered racemic controls have no effect.
Meital Ozeri +6 more
wiley +1 more source
Youqi dizhi yu caishouluFor exploratory wells where natural gas has been discovered in new regions or for new adjustment wells in mature areas， it is essential to conduct productivity testing （also known as deliverability testing） after completing the gas test and shut-in to ...
CHEN Yuanqian
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The Composite Theorem of Ternary Quadratic Inequalities and its Applications
, 2008 In this paper, we establish the composite theorem of ternary quadratic inequalities by using the Decision Theorem and Hölder inequality. Its applications in triangle inequalities are discussed, and several problems and conjectures are put ...
Liu, Jian
core
Advanced Materials, EarlyView.Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin +5 more
wiley +1 more source
Well-posedness of the microwave heating problem
Discrete and Continuous Models and Applied Computational ScienceA number of initial boundary-value problems of classical mathematical physics is generally represented in the linear operator equation and its well-posedness and causality in a Hilbert space setting was established. If a problem has a unique solution and
Baljinnyam Tsangia
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Extensions, crossed modules and pseudo quadratic Lie type superalgebras
Extracta Mathematicae, 2022 Extensions and crossed modules of Lie type superalgebras are introduced and studied. We construct homology and cohomology theories of Lie-type superalgebras.
M. Pouye, B. Kpamegan
doaj
A Solution Approach for Solving Fully Fuzzy Quadratic Programming Problems
Journal of Applied Research on Industrial Engineering, 2018 Quadratic Programming has been widely applied to solve real-world problems. This paper describes a solution method for solving a special class of fuzzy quadratic programming problems with fuzziness in relations.
Nemat Allah Taghi-Nezhad +1 more
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Subordinate Quadratic Forms and Their Complementary Forms [PDF]
Proceedings of the National Academy of Sciences, 1971 Theorem 1. For α, β on the range 1,..., μ, let Q ( z ) = * a αβ z α z β be a real valued, nonsingular, symmetric quadratic form. For positive integers r and s
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