Results 11 to 20 of about 16,356,505 (288)

Even-Order Pascal Tensors Are Positive-Definite

open access: yesMathematics
In this paper, we show that even-order Pascal tensors are positive-definite, and odd-order Pascal tensors are strongly completely positive. The significance of these is that our induction proof method also holds for some other families of completely ...
Chunfeng Cui, Liqun Qi, Yannan Chen
doaj   +4 more sources

On the order of a group of even order

open access: yesJournal of Algebra, 2007
Let \(G\) be a group of even order with a unique conjugacy class of involutions. In the paper under review the authors provide an upper bound for the order of \(G\) in terms of the centralizer \(H=C_G(t)\) of an involution \(t\) in \(G\). As an application the authors provide examples of sporadic simple groups, the groups \(Ly\) and \(Th\), whose ...
Harada, Koichiro, Miyamoto, Masahiko
openaire   +3 more sources

Even order self adjoint time scale problems [PDF]

open access: yesElectronic Journal of Differential Equations, 2005
Even order self adjoint differential time scale expressions are introduced, together with associated self adjoint boundary conditions; the result is established by induction. Several fourth-order nabla-delta delta-nabla examples are given for select self
Douglas R. Anderson, Joan Hoffacker
doaj   +3 more sources

Cubic Extensions of Flag-Transitive Planes, I. Even Order [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The collineation groups of even order translation planes which are cubic extensions of flag-transitive planes are determined.
Yutaka Hiramine   +2 more
doaj   +2 more sources

Even-order optical harmonics generated from centrosymmetric-material metasurfaces

open access: yesPhysical Review Research
Generation of even-order optical harmonics requires noncentrosymmetric structures being conventionally observed in crystals lacking the center of inversion.
Pavel Tonkaev   +6 more
doaj   +2 more sources

Williamson matrices of even order

open access: yes, 1974
Recent advances in the construction of Hadamard matrices have depended on the existence of Baumert-Hall arrays and Williamson-type matrices. These latter are four (1,-1) matrices A,B,C,D, of order m, which pairwise satisfy (i) MNT = NMT, M,N e {A,B,C,D}, and (ii) AAT+BBT+CCT+DDT = 4mIm, where I is the identity matrix.
Jennifer Seberry (19583125)
openaire   +2 more sources

The linear dependence relations and truncation errors for interpolating even order splines [PDF]

open access: yes, 1975
Linear dependence relations are derived for even order polynomial splines defined over the points midway between a uniformly spaced set of knots.
Meek, DS, Hoskins, WD
core   +4 more sources

Five Years International Workers Order: 1930–1935

open access: yes, 1935
A history of the first five years of the International Workers Order, addressing the IWO's foundation, its various ethnic sections, and its goals.CONTENTS: Five Years I.W.O. • First Struggles for Proletarian Order by R.
International Workers Order
core   +4 more sources

The order of a group of even order [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
We will give an estimation of the order of a group of even order by the order of the centralizer of an involution using the classification of finite simple groups.
openaire   +1 more source

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