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Strange Functions in Real Analysis, Second Edition

Buch | Hardcover
432 Seiten
2005 | 2nd New edition
Chapman & Hall/CRC (Verlag)
978-1-58488-582-5 (ISBN)
168,35 inkl. MwSt
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Explores a number of important examples and constructions of pathological functions. This work begins with Cantor and Peano-type functions and moves to functions whose constructions require essentially noneffective methods. It considers examples of functions whose existence cannot be established without the help of addition set-theoretical axioms.
Weierstrass and Blancmange nowhere differentiable functions, Lebesgue integrable functions with everywhere divergent Fourier series, and various nonintegrable Lebesgue measurable functions. While dubbed strange or "pathological," these functions are ubiquitous throughout mathematics and play an important role in analysis, not only as counterexamples of seemingly true and natural statements, but also to stimulate and inspire the further development of real analysis.

Strange Functions in Real Analysis explores a number of important examples and constructions of pathological functions. After introducing the basic concepts, the author begins with Cantor and Peano-type functions, then moves to functions whose constructions require essentially noneffective methods. These include functions without the Baire property, functions associated with a Hamel basis of the real line, and Sierpinski-Zygmund functions that are discontinuous on each subset of the real line having the cardinality continuum. Finally, he considers examples of functions whose existence cannot be established without the help of additional set-theoretical axioms and demonstrates that their existence follows from certain set-theoretical hypotheses, such as the Continuum Hypothesis.

Introduction: basic concepts
Cantor and Peano type functions
Functions of first Baire classNew!
Semicontinuous functions that are not countably continuousNew!
Singular monotone functions
Everywhere differentiable nowhere monotone functions
Nowhere approximately differentiable functions
Blumberg's theorem and Sierpinski-Zygmund functions
Lebesgue nonmeasurable functions and functions without the Baire property
Hamel basis and Cauchy functional equation
Luzin sets, Sierpinski sets, and their applications
Absolutely nonmeasurable additive functionsNew!
Egorov type theorems
Sierpinski's partition of the Euclidean plane
Bad functions defined on second category setsNew!
Sup-measurable and weakly sup-measurable functions
Generalized step-functions and superposition operatorsNew!
Ordinary differential equations with bad right-hand sides
Nondifferentiable functions from the point of view of category and measure
Bibliography
Subject Index

Erscheint lt. Verlag 20.12.2005
Sprache englisch
Maße 152 x 229 mm
Gewicht 816 g
Themenwelt Mathematik / Informatik Mathematik
ISBN-10 1-58488-582-3 / 1584885823
ISBN-13 978-1-58488-582-5 / 9781584885825
Zustand Neuware
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