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 作者：R. Parvatham , T.N. Shanmugam 来源：[J].Bulletin of the Australian Mathematical Society(IF 0.48), 1983, Vol.28 (2), pp.207-215 摘要：Let E = { z : | z | < 1} and let H = { w : regular in E, w(0) = 0, |w(z)| < l, z E }. Let P ( A, B ) denote the class of functions in E which can be put in the form (1 + Aw ( z ))/(1 + Bw ( z )), −1 ≤ A < B ≤ 1, w...
 作者：K. S. Padmanabhan , R. Parvatham 来源：[J].Bulletin of the Australian Mathematical Society(IF 0.48), 1985, Vol.32 (3), pp.321-330 摘要：Let Sa ( h ) denote the class of analytic functions f on the unit disc E with f (0) =0 = f ′ (0) −1 satisfying , where ...
 作者：R. Parvatham , J. Thangamani 来源：[J].International Journal of Mathematics and Mathematical Sciences, 1983, Vol.6 (1), pp.181 摘要：The authors introduce the notions of Ritt order and lower order to functions defined by the series Ã¢ÂˆÂ‘1Ã¢ÂˆÂžfn(s)exp(Ã¢ÂˆÂ’ÃŽÂ»ns) where (ÃŽÂ»n) is a D-sequence and fn(s) are entire functions of bounded index.
 作者：R. Parvatham , J. Thangamani 来源：[J].International Journal of Mathematics and Mathematical Sciences, 1983, Vol.6 (1), pp.181-187 摘要：The authors introduce the notions of Ritt order and lower order tofunctions defined by the series ∑1∞fn(s)exp(−λns) where (λn) is a D-sequence and fn(s) are entire functions of bounded index.
 作者：M. Blambert , R. Parvatham 来源：[J].International Journal of Mathematics and Mathematical Sciences, 1979, Vol.2 (1), pp.45 摘要：In this work, we consider certain class of exponential series with polynomial coefficients and study the properties of convergence of such series. Then we consider a subclass of this class and prove certain theorems on the overconvergence of such a series, which allow us to deter...
 作者：R. Parvatham , S. Ponnusamy , S. K. Sahoo 来源：[J].Hiroshima Mathematical Journal(IF 0.289), 2008, Vol.38 (1), pp.19-29 摘要：In this paper, we obtain sharp norm estimates for the Bernardi integral transform of functions belonging to the class ${\mathcal K}(A,B)$, \$-1\le B...
 作者：R. Parvatham , J. Thangamani 来源：[J].International Journal of Mathematics and Mathematical Sciences, 1981, Vol.6 (1) 摘要：The authors introduce the notions of Ritt order and lower order tofunctions defined by the series ∑ 1 ∞ f n ( s ) exp ( − λ n s ) where ( λ n ) is a D -sequence and f n ( s ) are entire functions of bounded ind...
 作者：M. Blambert , R. Parvatham 来源：[J].International Journal of Mathematics and Mathematical Sciences, 1978, Vol.2 (1) 摘要：In this work, we consider certain class of exponential series with polynomial coefficients and study the properties of convergence of such series. Then we consider a subclass of this class and prove certain theorems on the overconvergence of such a series, which allow us to deter...
 作者：M. Anbu Durai , R. Parvatham 来源：[J].International Journal of Mathematics and Mathematical Sciences, 2002, Vol.29 (3) 摘要：We prove that the class of uniformly α - convex functions introduced by Kanas is closed under thegeneralized Ruscheweyh integral operator for 0 < α ≤ 1 .
 作者：R. Parvatham , S. Radha 来源：[J].Annales Polonici Mathematici(IF 0.306), 1988, Vol.49, pp.31-34