Zobrazeno 1 - 10
of 16
pro vyhledávání: '"D. B Figueiredo"'
Autor:
Bartolomeu D. B. Figueiredo
Publikováno v:
Mathematical Methods in the Applied Sciences. 45:1798-1799
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9fc6ebcddde35f1acc4dbe67b295c09
https://doi.org/10.1002/mma.7871
https://doi.org/10.1002/mma.7871
Autor:
Bartolomeu D. B. Figueiredo
New solutions for the elliptic Darboux equation are obtained as particular cases of solutions constructed for Heun's general equation. We consider two groups of power series expansions and two new groups of expansions in series of Gauss hypergeometri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14c22c63b9054fa7fd858d3297088cc9
Publikováno v:
Applied Mathematics and Computation. 284:234-259
We study the convergence of a group of solutions in series of confluent hypergeometric functions for the confluent Heun equation. These solutions are expansions in two-sided infinite series (summation from minus to plus infinity) which are interprete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf7f13095b4b14e0f624eeb91ac0bd25
https://doi.org/10.1016/j.amc.2016.03.003
https://doi.org/10.1016/j.amc.2016.03.003
Autor:
D. B Figueiredo, L. C. S Ferreira, M. C Crivellenti, S. C. Araújo, L Zane, V. M Gonçalves, L. R Pereira
Publikováno v:
Blucher Chemical Engineering Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9f83192f094e6676b0a49f8a8ecc6d7
https://doi.org/10.5151/cobeq2018-co.095
https://doi.org/10.5151/cobeq2018-co.095
Publikováno v:
Emancipacao. 15:299-316
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb637cd56fdddb45dbb4d6c864911e19
https://doi.org/10.5212/emancipacao.v.15i2.0008
https://doi.org/10.5212/emancipacao.v.15i2.0008
Autor:
Bartolomeu D. B. Figueiredo
Publikováno v:
Journal of Physics A: Mathematical and General. 35:2877-2906
Expansions in series of Coulomb and hypergeometric functions for the solutions of the generalized spheroidal wave equations (GSWEs) are analysed and written together in pairs. Each pair consists of a solution in series of hypergeometric functions and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0988e27aefb77a14d30fcd5fe436e81
https://doi.org/10.1088/0305-4470/35/12/312
https://doi.org/10.1088/0305-4470/35/12/312
Autor:
B D B Figueiredo
Publikováno v:
Classical and Quantum Gravity. 15:3849-3862
Godel-type spacetimes in an Einstein - Cartan theory of gravitation are reconsidered by supposing that the curvature source contains an electromagnetic field in addition to a Weyssenhoff - Raabe fluid. The electromagnetic field can be interpreted as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45bc312153f5e983492ac3e43d83f41c
https://doi.org/10.1088/0264-9381/15/12/014
https://doi.org/10.1088/0264-9381/15/12/014
Firstly, we construct kernels of integral relations among solutions of the confluent Heun equation (CHE) and its limit, the reduced CHE (RCHE). In both cases we generate additional kernels by systematically applying substitutions of variables. Second
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0edb22765945e97ff22c1ae7f0460485
Autor:
B. D. B. Figueiredo, M. Novello
Publikováno v:
Journal of Mathematical Physics. 34:3121-3132
Fackerell–Crossman’s solutions to a generalized spheroidal wave equation are extended for the case in which there is no free parameter in that equation. The results, together with Leaver’s expansions in series of Coulomb wave functions, are use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2faac904419e8fd1ae6041f40a7a4f2
https://doi.org/10.1063/1.530066
https://doi.org/10.1063/1.530066
We find transformations of variables which preserve the form of the equation for the kernels of integral relations among solutions of the Heun equation. These transformations lead to new kernels for the Heun equation, given by single hypergeometric f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39fd0f5d6531c413268aeb82ffcd4340
http://arxiv.org/abs/1002.4559
http://arxiv.org/abs/1002.4559