Results 21 to 30 of about 2,697,458 (148)

Planar posets have dimension at most linear in their height

open access: yes, 2017
We prove that every planar poset $P$ of height $h$ has dimension at most $192h + 96$. This improves on previous exponential bounds and is best possible up to a constant factor.
Joret, Gwenaël   +2 more
core   +1 more source

An extended reverse Hardy–Hilbert’s inequality in the whole plane

open access: yesJournal of Inequalities and Applications, 2018
Using weight coefficients, a complex integral formula, and Hermite–Hadamard’s inequality, we give an extended reverse Hardy–Hilbert’s inequality in the whole plane with multiparameters and a best possible constant factor.
Qiang Chen, Bicheng Yang
doaj   +1 more source

A More Accurate Half-Discrete Hardy-Hilbert-Type Inequality with the Best Possible Constant Factor Related to the Extended Riemann-Zeta Function

open access: yes, 2015
By the method of weight coefficients, techniques of real analysis and Hermite-Hadamard's inequality, a half-discrete Hardy-Hilbert-type inequality related to the kernel of the hyperbolic cosecant function with the best possible constant factor expressed in terms of the extended Riemann-zeta function is proved.
Rassias, Michael Th., Yang, Bicheng
openaire   +2 more sources

Stackelberg Network Pricing Games [PDF]

open access: yes, 2007
We study a multi-player one-round game termed Stackelberg Network Pricing Game, in which a leader can set prices for a subset of $m$ priceable edges in a graph. The other edges have a fixed cost.
Briest, Patrick   +2 more
core   +10 more sources

Search For A Permanent Electric Dipole Moment Using Atomic Indium

open access: yes, 2011
We propose indium (In) as a possible candidate for observing the permanent electric dipole moment (EDM) arising from the violations of parity (P) and time-reversal (T) symmetries.
B. K. Sahoo   +4 more
core   +1 more source

Bounds for the quantifier depth in finite-variable logics: Alternation hierarchy [PDF]

open access: yes, 2013
Given two structures G and H distinguishable in FO^k (first-order logic with k variables), let A^k(G,H) denote the minimum alternation depth of a FO^k formula distinguishing G from H. Let A^k(n) be the maximum value of A^k(G,H) over n-element structures.
Berkholz, Christoph   +2 more
core   +2 more sources

On a Discrete Version of the Hardy–Littlewood–Polya Inequality Involving Multiple Parameters in the Whole Plane

open access: yesMathematics
In this paper, by introducing multiple parameters, we establish a discrete version of the Hardy–Littlewood–Polya inequality in the whole plane. For the obtained inequality, we give the equivalent statements of the best possible constant factor linked to ...
Bicheng Yang, Shanhe Wu
doaj   +1 more source

On a reverse Mulholland’s inequality in the whole plane

open access: yesJournal of Inequalities and Applications, 2018
By introducing multi-parameters, applying the weight coefficients and Hermite–Hadamard’s inequality, we give a reverse of the extended Mulholland inequality in the whole plane with the best possible constant factor.
Aizhen Wang, Bicheng Yang
doaj   +1 more source

A discrete Hilbert-type inequality in the whole plane

open access: yesJournal of Inequalities and Applications, 2016
By the use of weight coefficients and technique of real analysis, a discrete Hilbert-type inequality in the whole plane with multi-parameters and a best possible constant factor is given.
Dongmei Xin, Bicheng Yang, Qiang Chen
doaj   +1 more source

Randomness Conductors and Constant-Degree Lossless Expanders [Extended Abstract] [PDF]

open access: yes, 2009
The main concrete result of this paper is the first explicit construction of constant degree lossless expanders. In these graphs, the expansion factor is almost as large as possible: (1-[epsilon])D, where D is the degree and [epsilon] is an arbitrarily ...
Capalbo, Michael   +3 more
core   +1 more source

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