Inequalities of Ostrowski and Trapezoidal Type for Functions of Selfadjoint Operators on Hilbert Spaces presents recent results concerning Ostrowski and Trapezoidal type inequalities for continuous functions of bounded Selfadjoint operators on complex Hilbert spaces.
The first chapter recalls some fundamental facts concerning bounded Selfadjoint operators on complex Hilbert spaces. The generalized Schwarz’s inequality for positive Selfadjoint operators as well as some results for the spectrum of this class of operators are presented. The author also introduces and explores the fundamental results for polynomials in a linear operator, continuous functions of selfadjoint operators that will play a central role throughout the book. The following chapter is devoted to the Ostrowski’s type inequalities, which provide sharp error estimates in approximating the value of a function by its integral mean and can be used to obtain a priory error bounds for different quadrature rules in approximating the Riemann integral by different Riemann sums. The author also presents recent results extending Ostrowski inequality in various directions for continuous functions of selfadjoint operators in complex Hilbert spaces. The final chapter illustrates recent results obtained in extending trapezoidal type inequality in various directions for continuous functions of selfadjoint operators in complex Hilbert spaces. Applications for mid-point inequalities and some elementary functions of operators as also provided.
This book is intended for use by researchers in various fields of Linear Operator Theory and Mathematical Inequalities. As well as postgraduate students and scientists applying inequalities in their specific areas.
Table des matières
1. Background for Functions of Selfadjoint Operators(Introduction, Bounded Selfadjoint Operators, Continuous Functions of Selfadjoint Operators, Step Functions of Selfadjoint Operators, The Spectral Representation of Selfadjoint Operators, References).-2. Inequalities of Ostrowski Type (Introduction, Scalar Ostrowski’s Type Inequalities, Ostrowski’s type Inequalities for Holder Continuous Functions, Other Ostrowski Inequalities for Continuous Functions, More Ostrowski’s Type Inequalities, Some Vector Inequalities for Monotonic Functions, Ostrowski’s Type Vector Inequalities, Bound for the Difference Between Functions and Integral Means, Ostrowski’s Type Inequalities for n-Time Differentiable Functions, References).-3. Inequalities of Trapezoid Type(Introduction, Scalar Trapezoidal Type Inequalities, Trapezoidal Vector Inequalities, Generalized Trapezoidal Inequalities, More Generalized Trapezoidal Inequalities, Product Inequalities, References).
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