Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Sobhy El-Sayed Ibrahim"'
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 2003, Iss 9, Pp 557-574 (2003)
The general ordinary quasidifferential expression Mp of nth order, with complex coefficients and its formal adjoint Mp+ on any finite number of intervals Ip=(ap,bp), p=1,…, N, are considered in the setting of the direct sums of Lwp2(ap,bp)-spaces
Externí odkaz:
https://doaj.org/article/3a08b2744e4543d9952f37c19baa32d4
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 2003, Iss 11, Pp 695-709 (2003)
Externí odkaz:
https://doaj.org/article/b9c8fbad692840f180c504db3b36b55d
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 2003, Iss 10, Pp 639-659 (2003)
Given a general quasi-differential expressions τ1,τ2,…,τn each of order n with complex coefficients and their formal adjoints are τ1+,τ2+,…,τn+ on [0,b), respectively, we show under suitable conditions on the function F that all solutions o
Externí odkaz:
https://doaj.org/article/a9fe53eed14642ddbf98498e5f846909
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
Advances in Pure Mathematics. 12:186-205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73feb0007a8ad061a32494239d8a631a
https://doi.org/10.4236/apm.2022.123016
https://doi.org/10.4236/apm.2022.123016
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
International Journal of Statistics and Applied Mathematics. 7:55-68
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f45e446bb083bb5524b5fbc724acf16
https://doi.org/10.22271/maths.2022.v7.i1a.776
https://doi.org/10.22271/maths.2022.v7.i1a.776
Autor:
Sobhy El-Sayed Ibrahim
Publikováno v:
Advances in Pure Mathematics. 12:206-228
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e28abd5dd09066f01c566b293d96e2d
https://doi.org/10.4236/apm.2022.123017
https://doi.org/10.4236/apm.2022.123017
Autor:
Sobhy El-Sayed Ibrahim
In this chapter, we explained the deficiency index problem for the product differential operators which are generated by a general ordinary quasi-differential expressions \(\tau_1\), \(\tau_2\), ..., \(\tau_n\) each of order n with complex coefficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72b3bc76e373ca144b4664772aee8818
https://doi.org/10.9734/bpi/ctmcs/v5/1817c
https://doi.org/10.9734/bpi/ctmcs/v5/1817c
