• Title/Summary/Keyword: Bochner integral

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THE WEAK DENJOY* EXTENSION OF THE BOCHNER, DUNFORD, PETTIS AND MCSHANE INTEGRALS

  • Park, Chun-Kee;Oh, Mee Na;Kim, Woung Kyun
    • Korean Journal of Mathematics
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    • v.11 no.2
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    • pp.137-146
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    • 2003
  • In this paper we introduce the concepts of the weak $Denjoy_*$ integral of real-valued functions and the weak $Denjoy_*$-Dunford, weak $Denjoy_*$-Pettis, weak $Denjoy_*$-Bochner, weak $Denjoy_*$-McShane integrals of Banach-valued functions and then investigate some of their properties.

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ANALYTIC OPERATOR-VALUED FUNCTION SPACE INTEGRAL REPRESENTED AS THE BOCHNER INTEGRAL:AN$L(L_2)$ THEORY

  • Chang, Kun-Soo;Park, Ki-Seong;Ryu, Kun-Sik
    • Communications of the Korean Mathematical Society
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    • v.9 no.3
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    • pp.599-606
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    • 1994
  • In [1], Cameron and Storvick introduced the analytic operator-valued function space integral. Johnson and Lapidus proved that this integral can be expressed in terms of an integral of operator-valued functions [6]. In this paper, we find some operator-valued Bochner integrable functions and prove that the analytic operator-valued function space integral of a certain function is represented as the Bochner integral of operator-valued functions on some conditions.

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THE $DENJOY_*$-STIELTJES EXTENSION OF THE BOCHNER, DUNFORD, PETTIS AND MCSHANE INTEGRALS

  • Park, Chun-Kee;Oh, Mee-Na
    • The Pure and Applied Mathematics
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    • v.15 no.3
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    • pp.315-327
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    • 2008
  • In this paper we introduce the concepts of $Denjoy_*$-Stieltjes-Dunford, $Denjoy_*$-Stieltjes-Pettis, $Denjoy_*$-Stieltjes-Bochner and $Denjoy_*$-McShane-Stieltjes integrals of Banach-valued functions using the $Denjoy_*$-Stieltjes integral of real-valued functions and investigate their properties.

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DENJOY-TYPE INTEGRALS OF BANACH-VALUED FUNCTIONS

  • Cho, Sung-Jin;Lee, Byung-Soo;Lee, Gue-Myung
    • Communications of the Korean Mathematical Society
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    • v.13 no.2
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    • pp.307-316
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    • 1998
  • In this paper Denjoy*-Dunford, Denjoy*-Pettis, Denjoy*-McShane and Denjoy*-Bochner integrals of functions which map an interval [a,b] into a Banach space X are defined. And we give the relations among the integrals.

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A NOTE ON THE W*IN DUAL SPACE

  • Yoon, Ju-Han
    • Bulletin of the Korean Mathematical Society
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    • v.33 no.2
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    • pp.277-287
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    • 1996
  • The theory of integration of functions with values in a Banach space has long been a fruitful area of study. In the eight years from 1933 to 1940, seminal papers in this area were written by Bochner, Gelfand, Pettis, Birhoff and Phillips. Out of this flourish of activity, two integrals have proved to be of lasting: the Bochner integral of strongly measurable function. Through the forty years since 1940, the Bochner integral has a thriving prosperous history. But unfortunately nearly forty years had passed until 1976 without a significant improvement after B. J. Pettis's original paper in 1938 [cf. 11].

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A REFINEMENT OF GRÜSS TYPE INEQUALITY FOR THE BOCHNER INTEGRAL OF VECTOR-VALUED FUNCTIONS IN HILBERT SPACES AND APPLICATIONS

  • Buse Constantin;Cerone Pietro;Dragomir Sever Silvestru;Roumeliotis John
    • Journal of the Korean Mathematical Society
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    • v.43 no.5
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    • pp.911-929
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    • 2006
  • A refinement of $Gr\ddot{u}ss$ type inequality for the Bochner integral of vector-valued functions in real or complex Hilbert spaces is given. Related results are obtained. Application for finite Fourier transforms of vector-valued functions and some particular inequalities are provided.