zbMATH — the first resource for mathematics

Geometry Search for the term Geometry in any field. Queries are case-independent.
Funct* Wildcard queries are specified by * (e.g. functions, functorial, etc.). Otherwise the search is exact.
"Topological group" Phrases (multi-words) should be set in "straight quotation marks".
au: Bourbaki & ti: Algebra Search for author and title. The and-operator & is default and can be omitted.
Chebyshev | Tschebyscheff The or-operator | allows to search for Chebyshev or Tschebyscheff.
"Quasi* map*" py: 1989 The resulting documents have publication year 1989.
so: Eur* J* Mat* Soc* cc: 14 Search for publications in a particular source with a Mathematics Subject Classification code (cc) in 14.
"Partial diff* eq*" ! elliptic The not-operator ! eliminates all results containing the word elliptic.
dt: b & au: Hilbert The document type is set to books; alternatively: j for journal articles, a for book articles.
py: 2000-2015 cc: (94A | 11T) Number ranges are accepted. Terms can be grouped within (parentheses).
la: chinese Find documents in a given language. ISO 639-1 language codes can also be used.

a & b logic and
a | b logic or
!ab logic not
abc* right wildcard
"ab c" phrase
(ab c) parentheses
any anywhere an internal document identifier
au author, editor ai internal author identifier
ti title la language
so source ab review, abstract
py publication year rv reviewer
cc MSC code ut uncontrolled term
dt document type (j: journal article; b: book; a: book article)
Hardy spaces and oscillatory singular integrals. (English) Zbl 0728.42013

Let T be a Calderón-Zygmund operator, i.e. T is bounded on L 2 ( n ) and has a kernel K which satisfies the estimates

|K(x,y)|C|x-y| -n ,|K(x,y)|C|x-y| -n-1 ·

Let P(x,y) be a real-valued polynomial. The main result is that the operator

Opf(x)=p·v· n e iP(x,y) K(x,y)f(y)dy

is bounded from H E 1 to L 1 ( n ), where the Hardy space H E 1 is defined by means of atoms. F. Ricci and E. M. Stein [J. Funct. Anal. 73, 179-194 (1987; Zbl 0622.42010)] recently proved that Op is bounded on L p -spaces, 1<p<.

42B20Singular and oscillatory integrals, several variables
42B30H p -spaces (Fourier analysis)
47G30Pseudodifferential operators