Results 11 to 20 of about 517,273 (291)

On spreading sequences and asymptotic structures

open access: yesTransactions of the American Mathematical Society, 2018
In the first part of the paper we study the structure of Banach spaces with a conditional spreading basis. The geometry of such spaces exhibits a striking resemblance to the geometry of James space. Further, we show that the averaging projections onto subspaces spanned by constant coefficient blocks with no gaps between supports are bounded.
Freeman, D.   +3 more
openaire   +4 more sources

Asymptotic speed of spreading in a delay lattice differential equation without quasimonotonicity

open access: yesElectronic Journal of Differential Equations, 2014
This article concerns the asymptotic speed of spreading in a delay lattice differential equation without quasimonotonicity. We obtain the speed of spreading by constructing an auxiliary undelayed equation, whose speed of spreading is the same as ...
Fuzhen Wu
doaj   +1 more source

Asymptotic and numerical analysis of a simple model for blade coating [PDF]

open access: yes, 2009
Motivated by the industrial process of blade coating, the two-dimensional flow of a thin film of Newtonian fluid on a horizontal substrate moving parallel to itself with constant speed under a fixed blade of finite length in which the flows upstream and ...
Duffy, B.R.   +3 more
core   +4 more sources

Asymptotically Optimal Randomized Rumor Spreading [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 2011
We propose a new protocol solving the fundamental problem of disseminating a piece of information to all members of a group of n players. It builds upon the classical randomized rumor spreading protocol and several extensions. The main achievements are the following: Our protocol spreads the rumor to all other nodes in the asymptotically optimal time ...
Doerr, B., Fouz, M.
openaire   +6 more sources

Downlink Steered Space-Time Spreading For Multi-Carrier Transmission Over Frequency Selective Channels [PDF]

open access: yes, 2008
This paper presents a novel amalgam of Steered Space-Time Spreading (SSTS) and Orthogonal Frequency Division Multiple Access (OFDMA) designed for attaining both spatial diversity gain and beamforming gain for transmission over OFDM-symbol-invariant ...
Mohammed El-Hajjar   +5 more
core   +2 more sources

Randomly Spread CDMA: Asymptotics Via Statistical Physics [PDF]

open access: yesIEEE Transactions on Information Theory, 2005
To be published in IEEE Transactions on Information ...
Dongning Guo, Sergio Verdú
openaire   +3 more sources

Asymptotic analysis of axisymmetric drop spreading [PDF]

open access: yesPhysical Review E, 1998
We study in this paper the time evolution of the spreading process of a small drop in contact with a flat dry surface, using asymptotic techniques. We reduced the problem by solving a quasisteady self-similar macroscopic problem and matched with the precursor region solution, where the van der Waals forces are important.
Treviño, C.   +2 more
openaire   +3 more sources

Asymptotic Performance Analysis of Time-Frequency-Domain Spread MC DS-CDMA Systems Employing MMSE Multiuser Detection [PDF]

open access: yes, 2010
In this contribution the asymptotic signal-to-interference-plus-noise ratio (SINR) performance of multicarrier direct-sequence code-division multiple-access systems employing time-frequency-domain spreading, i.e., of the TF/MC DS-CDMA systems, is studied,
Zhang, Youguang   +5 more
core   +2 more sources

Asymptotic Behavior for Radially Symmetric Solutions of a Logistic Equation with a Free Boundary

open access: yesMathematical Modelling and Analysis, 2017
In this paper we investigate a logistic equation with a new free boundary condition appearing in ecology, we aim to describe the spreading of a new or invasive species by studying the asymptotic behavior of the radially symmetric solutions of the problem.
Jingjing Cai, Quanjun Wu
doaj   +1 more source

The asymptotic nature of the analytic spread [PDF]

open access: yesMathematical Proceedings of the Cambridge Philosophical Society, 1979
In (3), corollary, p. 373) Burch gives the following inequality for the analytic spread l(I) of an ideal I of a noetherian local ring (R, m):In this paper we shall improve this by showing that the number min depth (R/In) may be replaced by the asymptotic value of depth (R/In) for large n (which exists) (see Section (2)). By its definition (see (6), def.
openaire   +2 more sources

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