| Title:
             | 
On maximal functions over circular sectors with rotation invariant measures (English) | 
| Author:
             | 
Aimar, H. | 
| Author:
             | 
Forzani, L. | 
| Author:
             | 
Naibo, V. | 
| Language:
             | 
English | 
| Journal:
             | 
Commentationes Mathematicae Universitatis Carolinae | 
| ISSN:
             | 
0010-2628 (print) | 
| ISSN:
             | 
1213-7243 (online) | 
| Volume:
             | 
42 | 
| Issue:
             | 
2 | 
| Year:
             | 
2001 | 
| Pages:
             | 
311-318 | 
| . | 
| Category:
             | 
math | 
| . | 
| Summary:
             | 
Given a rotation invariant measure in $\Bbb R^n$, we define the maximal operator over circular sectors. We prove that it is of strong type $(p,p)$ for $p>1$ and we give necessary and sufficient conditions on the measure for the weak type $(1,1)$ inequality. Actually we work in a more general setting containing the above and other situations. (English) | 
| Keyword:
             | 
maximal functions | 
| Keyword:
             | 
spaces of homogeneous type | 
| MSC:
             | 
42B25 | 
| MSC:
             | 
43A85 | 
| idZBL:
             | 
Zbl 1054.42014 | 
| idMR:
             | 
MR1832149 | 
| . | 
| Date available:
             | 
2009-01-08T19:10:05Z | 
| Last updated:
             | 
2012-04-30 | 
| Stable URL:
             | 
http://hdl.handle.net/10338.dmlcz/119245 | 
| . | 
| Reference:
             | 
[1] Sjögren P.: A remark on the maximal functions for measures in $\Bbb R^n$.Amer. J. Math. 105 (1983), 1231-1233. MR 0714775 | 
| Reference:
             | 
[2] Coifman R., Weiss G.: Analyse harmonique non-commutative sur certains espaces homogènes, étude de certaines intégrales singulières.Lectures Notes in Math., Vol 242, Springer-Verlag, 1971. Zbl 0224.43006, MR 0499948 | 
| Reference:
             | 
[3] Pólya G., Szegö G.: Problems and Theorems in Analysis.Volume I, Springer-Verlag, Berlin-Heidelberg-New York, 1972. | 
| Reference:
             | 
[4] de Guzmán M.: Real Variable Methods in Fourier Analysis.North Holland, Amsterdam, 1981. MR 0596037 | 
| Reference:
             | 
[5] Macías R., Segovia C.: Lipschitz functions on spaces of homogeneous type.Advances in Mathematics 33 (1979), 257-270. MR 0546295 | 
| Reference:
             | 
[6] Aimar H., Harboure E., Iaffei B.: Extensions of a theorem of Stein and Zygmund.preprint. | 
| . |