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Weak Type Estimates for Cesaro Sums of Jacobi Polynomial Series
 
Sagun Chanillo Rutgers University, New Brunswick, NJ
Weak Type Estimates for Cesaro Sums of Jacobi Polynomial Series
eBook ISBN:  978-1-4704-0064-4
Product Code:  MEMO/102/487.E
List Price: $36.00
MAA Member Price: $32.40
AMS Member Price: $21.60
Weak Type Estimates for Cesaro Sums of Jacobi Polynomial Series
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Weak Type Estimates for Cesaro Sums of Jacobi Polynomial Series
Sagun Chanillo Rutgers University, New Brunswick, NJ
eBook ISBN:  978-1-4704-0064-4
Product Code:  MEMO/102/487.E
List Price: $36.00
MAA Member Price: $32.40
AMS Member Price: $21.60
  • Book Details
     
     
    Memoirs of the American Mathematical Society
    Volume: 1021993; 90 pp
    MSC: Primary 33; 40; 41; 42;

    This work completely characterizes the behavior of Cesaro means of any order of the Jacobi polynomials. In particular, pointwise estimates are derived for the Cesaro mean kernel. Complete answers are given for the convergence almost everywhere of partial sums of Cesaro means of functions belonging to the critical \(L^p\) spaces. This characterization is deduced from weak type estimates for the maximal partial sum operator. The methods used are fairly general and should apply to other series of special functions.

    Readership

    Research mathematicians.

  • Table of Contents
     
     
    • Chapters
    • 1. Introduction
    • 2. Facts and definitions
    • 3. An absolute value estimate for $3(1-y) \leq 2(1-x)$
    • 4. A basic estimate for $3(1-y) \leq 2(1-x)$
    • 5. A kernel estimate for $3(1-y) \leq 2(1-x)$ and $-1 \leq \theta \leq 0$
    • 6. A reduction lemma
    • 7. A kernel estimate for $3(1-y) \leq 2(1-x)$ and $\theta \geq -$1
    • 8. A Cesaro kernel estimate for $t \leq s/2$
    • 9. A basic estimate for separated arguments
    • 10. A reduction lemma for separated arguments
    • 11. A kernel estimate for separated arguments
    • 12. Cesaro kernel estimate for $t \leq s - b$
    • 13. Cesaro kernel estimate for $s$ near $t$
    • 14. Kernel estimates
    • 15. A weak type lemma
    • 16. Lemmas for the upper critical value
    • 17. Proofs of theorems (1.1)–(1.3)
    • 18. Norm estimates for $p$ not between the critical values
    • 19. A polynomial norm inequality
    • 20. A lower bound for a norm of the kernel
    • 21. Some limitations of the basic results
    • 22. Growth of Cesaro means
  • Requests
     
     
    Review Copy – for publishers of book reviews
    Permission – for use of book, eBook, or Journal content
    Accessibility – to request an alternate format of an AMS title
Volume: 1021993; 90 pp
MSC: Primary 33; 40; 41; 42;

This work completely characterizes the behavior of Cesaro means of any order of the Jacobi polynomials. In particular, pointwise estimates are derived for the Cesaro mean kernel. Complete answers are given for the convergence almost everywhere of partial sums of Cesaro means of functions belonging to the critical \(L^p\) spaces. This characterization is deduced from weak type estimates for the maximal partial sum operator. The methods used are fairly general and should apply to other series of special functions.

Readership

Research mathematicians.

  • Chapters
  • 1. Introduction
  • 2. Facts and definitions
  • 3. An absolute value estimate for $3(1-y) \leq 2(1-x)$
  • 4. A basic estimate for $3(1-y) \leq 2(1-x)$
  • 5. A kernel estimate for $3(1-y) \leq 2(1-x)$ and $-1 \leq \theta \leq 0$
  • 6. A reduction lemma
  • 7. A kernel estimate for $3(1-y) \leq 2(1-x)$ and $\theta \geq -$1
  • 8. A Cesaro kernel estimate for $t \leq s/2$
  • 9. A basic estimate for separated arguments
  • 10. A reduction lemma for separated arguments
  • 11. A kernel estimate for separated arguments
  • 12. Cesaro kernel estimate for $t \leq s - b$
  • 13. Cesaro kernel estimate for $s$ near $t$
  • 14. Kernel estimates
  • 15. A weak type lemma
  • 16. Lemmas for the upper critical value
  • 17. Proofs of theorems (1.1)–(1.3)
  • 18. Norm estimates for $p$ not between the critical values
  • 19. A polynomial norm inequality
  • 20. A lower bound for a norm of the kernel
  • 21. Some limitations of the basic results
  • 22. Growth of Cesaro means
Review Copy – for publishers of book reviews
Permission – for use of book, eBook, or Journal content
Accessibility – to request an alternate format of an AMS title
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