Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8899260 | Journal of Mathematical Analysis and Applications | 2018 | 13 Pages |
Abstract
Let P:CnâC be an m-homogeneous polynomial given byP(x)=â1â¤j1â¤â¦â¤jmâ¤ncj1â¦jmxj1â¦xjm. Defant and Schlüters defined a non-symmetric associated m-form LP:(Cn)mâC byLP(x(1),â¦,x(m))=â1â¤j1â¤â¦â¤jmâ¤ncj1â¦jmxj1(1)â¦xjm(m). They estimated the norm of LP on (Cn,ââ
â)m by the norm of P on (Cn,ââ
â) times a (clogâ¡n)m2 factor for every 1-unconditional norm ââ
â on Cn. A symmetrization procedure based on a card-shuffling algorithm which (together with Defant and Schlüters' argument) brings the constant term down to (cmlogâ¡n)mâ1 is provided. Regarding the lower bound, it is shown that the optimal constant is bigger than (clogâ¡n)m/2 when nâ«m. Finally, the case of âp-norms ââ
âp with 1â¤p<2 is addressed.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Felipe Marceca,