Results 11 to 20 of about 785,515 (75)

Kontorovich-Lebedev-Fourier space for de Sitter correlators

open access: yesJournal of High Energy Physics
In this work, we build a novel frequency-momentum space for (d + 1)-dimensional de Sitter (dS) correlators from first principles. This construction follows directly from the decomposition into unitary irreducible representations (UIRs) of the spacetime ...
Nathan Belrhali   +3 more
doaj   +4 more sources

Integral transforms and the regularisation method in the time‐domain excitation of open PEC slotted cone scatterers

open access: yesIET Microwaves, Antennas &Propagation, Volume 15, Issue 10, Page 1360-1379, 12 August 2021., 2021
Abstract An initial‐boundary value problem for the transient electromagnetic field in the presence of a complicated‐shape scatterer is studied. The considered biconical zero‐thickness and perfectly conducting surface with periodic longitudinal slots has many special cases, each of which is of separate practical interest.
Volodymyr O. Doroshenko   +1 more
wiley   +1 more source

The Partition Function of the Dirichlet Operator D2s=∑i=1d (-∂i2) s on a d‐Dimensional Rectangle Cavity

open access: yesJournal of Mathematics, Volume 2015, Issue 1, 2015., 2015
We study the asymptotic behavior of the free partition function in the t → 0+ limit for a diffusion process which consists of d‐independent, one‐dimensional, symmetric, 2s‐stable processes in a hyperrectangular cavity K⊂Rd with an absorbing boundary.
Agapitos N. Hatzinikitas, Alfred Peris
wiley   +1 more source

On the Polyconvolution with the Weight Function for the Fourier Cosine, Fourier Sine, and the Kontorovich‐Lebedev Integral Transforms

open access: yesMathematical Problems in Engineering, Volume 2010, Issue 1, 2010., 2010
The polyconvolution with the weight function γ of three functions f, g, and h for the integral transforms Fourier sine (Fs), Fourier cosine (Fc), and Kontorovich‐Lebedev (Kiy), which is denoted by ∗γ(f,g,h)(x), has been constructed. This polyconvolution satisfies the following factorization property Fc(∗γ(f,g,h))(y)=sin y(Fsf)(y)·(Fcg)(y)·(Kiyh)(y ...
Nguyen Xuan Thao, Slimane Adjerid
wiley   +1 more source

Central factorials under the Kontorovich–Lebedev transform of polynomials

open access: yes, 2013
In this paper, we show that slight modifications of the Kontorovich–Lebedev (KL) transform lead to an automorphism of the vector space of polynomials.
Yakubovich, S.   +3 more
core   +1 more source

The Kontorovich-Lebedev transform as a map between d-orthogonal polynomials

open access: yes, 2013
A slight modification of the Kontorovich–Lebedev transform is an auto-morphism on the vector space of polynomials. The action of this inline image-transform over certain polynomial sequences will be under discussion, and a special attention will be given
Yakubovich, S., Loureiro, Ana F.
core   +1 more source

On the theory of the Kontorovich-Lebedev transformation on distributions

open access: yes, 1994
A new proof of the representation theorem for the Kontorovich-Lebedev transformation on distributions is given.
Brian Fisher, Semen B. Yakubovich
core   +1 more source

Finite hybrid integral transformation of the Bessel–Furier (Kontorovich–Lebedev) on the polar axis segment [PDF]

open access: yes, 2011
Запроваджено інтегральне перетворення, породжене на сегменті полярної осі з двома точками спряження гібридним диференціальним оператором Бесселя–Фур’є (Конторовича–Лєбєдєва).Introduced integral transformation, generated by the segment polar axis of ...
Lenyuk, M.   +3 more
core   +1 more source

Operational calculi for kontorovich-lebedev and mehler-fock transforms on distributions with compact support [PDF]

open access: yes, 1998
Operational calculi are analized for Kontorovich-Lebedev and Mehler-Fock transforms on distributions with compact ...
Negrín, E. R., González, B. J.
core  

On the use of Kontorovich-Lebedev transform in electromagnetic diffraction by an impedance cone

open access: yes, 2012
We consider the boundary-value problem for the Helmholtz equation connected with an infinite circular cone with an impedance boundary on its face. The scheme of solution includes applying the Kontorovich-Lebedev (KL) transform to reduce the problem to ...
Kamel, Aladin Hassan   +5 more
core   +1 more source

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