نتایج جستجو برای: s delta function

تعداد نتایج: 1874531  

1997
Alexander Gersten

By applying projection operators to state vectors of coordinates we obtain subspaces in which these states are no longer normalized according to Dirac's delta function but normalized according to what we call " incomplete delta functions ". We show that this class of functions satisfy identities similar to those satisfied by the Dirac delta function. The incomplete delta functions may be employ...

2009
R.D.M. Garcia

The ‘‘pre-processing’’ procedure and the ‘‘break-point’’ analysis developed in a previous work based on the ADO (analytical discrete ordinates) method are used, along with a nascent delta function to describe the polar-angle dependence of an incident beam, to solve the classical albedo problem for radiative transfer in a plane-parallel, multi-layer medium subject to Fresnel boundary and interfa...

2016
Ch. Vasavi G. Suresh Kumar M.S.N. Murty

Using the concept of Hukuhara difference, in this paper we introduce a class of new derivatives called Hukuhara delta derivative and a class of new integrals called Hukuhara delta integral for fuzzy setvalued functions on time scales. Moreover, some corresponding properties of Hukuhara delta derivative and Hukuhara delta integral are discussed. Furthermore, sufficient conditions are established...

2002
D. R. Anderson

Existence criteria for two positive solutions to a nonlinear, even-order stacked deltanabla boundary value problem with stacked, vanishing conditions at the two endpoints are found using the method of Green’s functions. A few examples are given for standard time scales. The corresponding even-order nabla-delta problem is also discussed in detail. c © 2003 Elsevier Science Ltd. All rights reserv...

1999
Robert Windle Martin Dresner

Recent research has found that the entrance of a low cost carrier leads to lower prices on routes it has entered. This paper extends this analysis by examining the impact of route entry by a discount carrier, ValuJet into an established carrier's hub, Delta, and by examining price changes on routes not entered by the low cost carrier. We found that Delta lowered its fares on competitive routes ...

2009
Jin Cheng Junichi Nakagawa Masahiro Yamamoto Tomohiro Yamazaki T. YAMAZAKI

We consider a one-dimensional fractional diffusion equation: ∂α t u(x, t) = ∂ ∂x ( p(x) ∂u ∂x (x, t) ) , 0 < x < `, where 0 < α < 1 and ∂α t denotes the Caputo derivative in time of order α. We attach the homogeneous Neumann boundary condition at x = 0, ` and the initial value given by the Dirac delta function. We prove that α and p(x), 0 < x < `, are uniquely determined by data u(0, t), 0 < t ...

2005
Izu Vaisman

We write down the local equations that characterize the sub-manifolds N of a Dirac manifold M which have a normal bundle that is either a coisotropic or an isotropic submanifold of T M endowed with the tangent Dirac structure. In the Poisson case, these formulas prove again a result of Xu: the submanifold N has a normal bundle which is a coisotropic submanifold of T M with the tangent Poisson s...

2011
Pierpaolo Battigalli Alfredo Di Tillio Edoardo Grillo Antonio Penta

We use an interactive epistemology framework to provide a systematic analysis of some solution concepts for games with asymmetric information. We characterize solution concepts using expressible epistemic assumptions, represented as events in the canonical space generated by primitive uncertainty about the payoff relevant state, payoff irrelevant information, and actions. In most of the paper, ...

1990
Luis A. Seco

We announce a proof of an asymptotic formula for the ground{state energy of a large atom. The early work of Thomas{Fermi, Hartree{Fock, Dirac and Scott predicted

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