Download PDF by George A. Anastassiou: Advanced Inequalities (Series on Concrete and Applicable

By George A. Anastassiou

ISBN-10: 9814317624

ISBN-13: 9789814317627

This monograph provides univariate and multivariate classical analyses of complex inequalities. This treatise is a fruits of the author's final 13 years of analysis paintings. The chapters are self-contained and several other complicated classes might be taught out of this ebook. huge historical past and motivations are given in each one bankruptcy with a complete checklist of references given on the finish. the themes coated are wide-ranging and numerous. contemporary advances on Ostrowski variety inequalities, Opial sort inequalities, Poincare and Sobolev kind inequalities, and Hardy-Opial style inequalities are tested. Works on traditional and distributional Taylor formulae with estimates for his or her remainders and functions in addition to Chebyshev-Gruss, Gruss and comparability of capacity inequalities are studied. the implications offered are quite often optimum, that's the inequalities are sharp and attained. functions in lots of components of natural and utilized arithmetic, corresponding to mathematical research, likelihood, usual and partial differential equations, numerical research, info idea, etc., are explored intimately, as such this monograph is acceptable for researchers and graduate scholars. it is going to be an invaluable educating fabric at seminars in addition to a useful reference resource in all technology libraries.

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Extra info for Advanced Inequalities (Series on Concrete and Applicable Mathematics)

Example text

Xn ) = n n i=1 [ai ,bi ] (bi − ai ) f (s1 , s2 , . . 42) where for j = 1, . . , n we have j−1 i=1 × j−1 [ai ,bi ] i=1 − + m−1 1 Tj := Tj (xj , xj+1 , . . , xn ) := (bi − ai ) k=1 xj − a j (bj − aj )k−1 Bk k! bj − a j ∂ k−1 f (s1 , s2 , . . , sj−1 , bj , xj+1 , . . , xn ) ∂xjk−1 ∂ k−1 f (s1 , s2 , . . , sj−1 , aj , xj+1 , . . , xn ) ds1 · · · dsj−1 ∂xjk−1 (bj − aj )m−1 m! i=1 ∗ −Bm [ai ,bi ] (bi − ai ) xj − s j bj − a j Bm j j−1 i=1 xj − a j bj − a j ∂ mf (s1 , s2 , . . , sj , xj+1 , .

Xn )| ≤ 1 (2r)! n (bj − aj )2r−1 ∂ 2r f (. . , xj+1 , . . , xn ) ∂x2r j j−1 j=1 i=1 (bi − ai ) j 1, [ai ,bi ] i=1 xj − a j bj − a j × (1 − 2−2r )|B2r | + 2−2r B2r − B2r . 81) 2) When m = 2r + 1, r ∈ N, then f |E2r+1 (x1 , . . , xn )| ≤ × 1 (2r + 1)! n (bj j−1 − aj )2r i=1 (bi − ai ) j=1 ∂ 2r+1 f (. . , xj+1 , . . , xn ) ∂x2r+1 j j 1, [ai ,bi ] i=1 xj − a j 2(2r + 1)! + B2r+1 (2π)2r+1 (1 − 2−2r ) bj − a j . 82) And at last 3) When m = 1, then n |E1f (x1 , . . , xn )| ≤ 1 j−1 j=1 i=1 1 + xj − 2 × Proof.

High computational difficulties in this direction prevent us for shoming sharpness for n ≥ 5 cases. 2. Let f : [a, b] → R be such that f (n−1) , n ≥ 1, is a continuous function and f (n) (x) exists and is finite for all but a countable set of x in (a, b) and that f (n) ∈ L∞ ([a, b]). Then for every x ∈ [a, b] we have (b − a)n−1 n! 1. |∆n (x)| ≤ Proof. b Bn a x−a b−a − Bn∗ x−t b−a dt f (n) ∞. 3. 2. Then for every x ∈ [a, b] we have |∆n (x)| ≤ (b − a)n n! 1 x−a b−a Bn (t) − Bn 0 dt f (n) ∞, n ≥ 1.

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Advanced Inequalities (Series on Concrete and Applicable Mathematics) by George A. Anastassiou


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