Zobrazeno 1 - 10
of 135
pro vyhledávání: '"D. K. Thomas"'
Autor:
S. A. Halim, D. K. Thomas
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 14, Iss 4, Pp 821-823 (1991)
For α>0, let B1(α) be the class of normalized analytic functions defined in the open unit disc D satisfying Re(f(z)/z)α−1f′(z)>0 for z∈D. The sharp lower bound for Re(f(z)/z)α is obtained and the result is generalized to some iterated integ
Externí odkaz:
https://doaj.org/article/48e58b2918ae4e24bba1f79f5cacc2bf
Autor:
Roger D K Thomas
This book presents a collection of papers that provide a snapshot of ongoing research on energy analysis, a record of the growing pains of a fledgling subject. The collection of papers arose out of a series of articles devised and designed for the jo
Autor:
D. K. Thomas
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 8, Iss 4, Pp 779-783 (1985)
Let B(α) be the class of normalised Bazilevič functions of type α>0 with respect to the starlike function g. Let B1(α) be the subclass of B(α) when g(z)≡z. Distortion theorems and coefficient estimates are obtained for functions belonging to B
Externí odkaz:
https://doaj.org/article/f531ba036db84d828f176e28dc66e74f
Autor:
K. Inayat Noor, D. K. Thomas
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 3, Iss 2, Pp 255-266 (1980)
In this paper, a new class of normalized univalent functions is introduced. The properties of this class and its relationship with some other subclasses of univalent functions are studied. The functions in this class are close-to-convex.
Externí odkaz:
https://doaj.org/article/60893902c12243c08d77f7d9bfbbbc5e
Autor:
Rabha Md. El-Ashwah, D. K. Thomas
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 8, Iss 4, Pp 785-793 (1985)
For α>0, let B(α) be the class of regular normalized Bazilevič functions defined in the unit disc. Choosing the associated starlike function g(z)≡z gives a proper subclass B1(α) of B(α). For B(α), correct growth estimates in terms of the area
Externí odkaz:
https://doaj.org/article/87be32d36a9e432ab826db5aadb8598a
Publikováno v:
Ukrains’kyi Matematychnyi Zhurnal. 75:683-697
UDC 517.5 We give sharp coefficient bounds for starlike and convex functions related to modified sigmoid functions. We also provide some sharp coefficients bounds for the inverse functions and sharp bounds for the initial logarithmic coefficients and
Autor:
Roger D. K. Thomas
Publikováno v:
Geology Today. 38:108-111
Autor:
Roger D. K. Thomas
Publikováno v:
Geology Today. 37:57-62
Publikováno v:
Palaeontology, vol 63, iss 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59bc42589d5635e5a2d19473db74fa45
https://escholarship.org/uc/item/4n38f2wm
https://escholarship.org/uc/item/4n38f2wm
Publikováno v:
Earth-Science Reviews. 185:15-31
The trace fossil Skolithos, with its simple, vertical to very slightly inclined, tubular form, is widely recognized and globally distributed in early Cambrian to Holocene strata, representing deep-sea to continental paleoenvironments. The type specie