Results 171 to 180 of about 14,201 (197)

Multiplicative Galois Module Structure

Journal of the London Mathematical Society, 1984
Soit N/K une extension finie galoisienne de corps de nombres de groupe de Galois G. Soit S un ensemble fini de places de N stable par G. On note U le groupe des S-unités de N et X l'ensemble \(\{\) \(\sum_{v\in S}n_ v v\), \(\sum_{v\in S}n_ v=0\}\). En supposant S assez gros, J. Tate a défini une classe canonique \(\alpha\) (N/K,S) dans Ext\({}^ 2_ G\)(
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Distributive and Multiplication Modules and Rings

Mathematical Notes, 2004
All rings are assumed to be associative and to have non-zero identity. An \(A\)-module \(M\) is called a: (i) distributive module (for brevity, d-module) if the lattice of its submodules is distributive; (ii) multiplication module (for brevity, m-module) if for every submodule \(N\) of \(M\) there exists an ideal \(B\) of \(A\) such that \(N=MB\).
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Cooperative Multiple Trellis Coded Modulation

MILCOM 2006, 2006
In this paper, we consider the design of cooperative multiple trellis coded modulation (CMTCM) schemes over Rayleigh fading channels. We design cooperative multiple trellis codes using asymmetric constellations that provide significant gains over non-cooperative coded modulation without sacrificing the data rate and bandwidth consumption.
Jialing Li, Andrej Stefanov
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On quasi-S-multiplication modules and weak S-multiplication modules

Journal of Algebra and Its Applications
Let [Formula: see text] be a multiplicatively closed subset of a commutative ring with identity [Formula: see text]. In this paper, we introduce quasi-[Formula: see text]-multiplication modules and weak [Formula: see text]-multiplication modules which are generalizations of quasi-multiplication modules and weak multiplication modules.
Mohamed Chhiti, Soibri Moindze
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Enhanced spatial modulation with multiple constellations

2014 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2014
Spatial modulation (SM) has recently drawn a great deal of attention, particularly due to the low complexity that it promises for both the transmitter and the receiver sides. However, this technique has a significant spectral efficiency loss with respect to spatial multiplexing (SMX) with the same number of transmit (Tx) antennas, and when the ...
Cheng, Chien-Chun, Sari, Hikmet, Sezginer, Serdar, Su, Y.T.   +3 more
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Principal Ideal Multiplication Modules

Algebra Colloquium, 2008
Let M be an R-module. If for every submodule N of M, there exists an element r ∈ R such that N=rM, then we say that M is a principal ideal multiplication module. In this paper, the relations between principal ideal multiplication modules, multiplication modules, cyclic modules, and modules over principal ideal rings are studied.
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On multiplication modules. II

1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Multiplication modules

2002
72
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Multiplication modules

Communications in Algebra, 1988
Zeinab Abd El-Bast, Patrick P. Smith
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Multiplicities of Matrices on Modules

Journal of the London Mathematical Society, 1983
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