| Title:
             | 
An inequality in Orlicz function spaces with Orlicz norm (English) | 
| Author:
             | 
Wang, Jincai | 
| Language:
             | 
English | 
| Journal:
             | 
Commentationes Mathematicae Universitatis Carolinae | 
| ISSN:
             | 
0010-2628 (print) | 
| ISSN:
             | 
1213-7243 (online) | 
| Volume:
             | 
44 | 
| Issue:
             | 
3 | 
| Year:
             | 
2003 | 
| Pages:
             | 
507-514 | 
| . | 
| Category:
             | 
math | 
| . | 
| Summary:
             | 
We use Simonenko quantitative indices of an $\Cal N$-function $\Phi$ to estimate two parameters $q_\Phi$ and $Q_\Phi$ in Orlicz function spaces $L^\Phi[0,\infty)$ with Orlicz norm, and get the following inequality: $\frac{B_\Phi}{B_\Phi-1}\leq q_\Phi\leq Q_\Phi\leq \frac{A_\Phi}{A_\phi-1}$, where $A_\Phi$ and $B_\Phi$ are Simonenko indices. A similar inequality is obtained in $L^\Phi [0,1]$ with Orlicz norm. (English) | 
| Keyword:
             | 
Orlicz spaces | 
| Keyword:
             | 
Simonenko indices | 
| Keyword:
             | 
$\triangle_2$-condition | 
| MSC:
             | 
46B20 | 
| MSC:
             | 
46E30 | 
| idZBL:
             | 
Zbl 1103.46011 | 
| idMR:
             | 
MR2025816 | 
| . | 
| Date available:
             | 
2009-01-08T19:30:43Z | 
| Last updated:
             | 
2012-04-30 | 
| Stable URL:
             | 
http://hdl.handle.net/10338.dmlcz/119404 | 
| . | 
| Reference:
             | 
[1] Chen S.T.: Geometry of Orlicz spaces.Dissertationes Mathematicae, Warszawa, 1996. Zbl 1089.46500, MR 1410390 | 
| Reference:
             | 
[2] Krasnosel'skii M.A., Rutickii Ya.B.: Convex Functions and Orlicz Space.Noordhoff Ltd., Groningen, 1961. MR 0126722 | 
| Reference:
             | 
[3] Lindenstrauss J., Tzafriri L.: Classical Banach Spaces.I and II, Springer, Berlin, 1977 and 1979. Zbl 0852.46015, MR 0500056 | 
| Reference:
             | 
[4] Maligranda L.: Indices and interpolation.Dissertationes Math. (Rozprawy Mat.) 234 (1985). Zbl 0566.46038, MR 0820076 | 
| Reference:
             | 
[5] Orlicz W.: Linear Functional Analysis.World Scientific Publishing, Singapore, 1992. Zbl 0799.46002, MR 1182560 | 
| Reference:
             | 
[6] Rao M.M., Ren Z.D.: Theory of Orlicz Spaces.Marcel Dekker, New York, 1991. Zbl 0724.46032, MR 1113700 | 
| Reference:
             | 
[7] Rao M.M., Ren Z.D.: Applications of Orlicz Spaces.Marcel Dekker, New York, 2002. Zbl 0997.46027, MR 1890178 | 
| Reference:
             | 
[8] Simonenko I.B.: Interpolation and extrapolation of linear operators in Orlicz spaces.Dokl. Akad. Nauk SSSR 151 (1963), 1288-1291 (Russian). Zbl 0131.12104, MR 0152872 | 
| Reference:
             | 
[9] Simonenko I.B.: Interpolation and extrapolation of linear operators in Orlicz spaces.Mat. Sb. (N.S.) 63 (105) (1964), 536-553 (Russian). MR 0199696 | 
| Reference:
             | 
[10] Wu C.X., Zhao S.Z., Chen J.O.: Calculation of Orlicz norm and rotundity of Orlicz spaces.J. Harbin Inst. Techn. 10 (1973), 2 1-12 (Chinese). | 
| Reference:
             | 
[11] Yan Y.: On a pair of geometric parameters of Orlicz norm.Comment. Math. Prace Mat. 41 (2001), 257-263. Zbl 1029.46026, MR 1876724 | 
| Reference:
             | 
[12] Yan Y.: Some results on packing in Orlicz sequence spaces.Studia Math. 147 (1) (2001), 73-88. Zbl 0986.46004, MR 1853478 | 
| Reference:
             | 
[13] Yan Y.Q.: Packing constants, weakly convergent sequence coefficients and Riesz angles in Orlicz sequence spaces.Ph.D. Dissertation, Suzhou Univ., Suzhou, P. R. China, 2002. | 
| . |