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A quantitative version of the non-abelian idempotent theorem
- Source :
- Geom. Funct. Anal. 21 (2011), no. 1, 141-221
- Publication Year :
- 2009
-
Abstract
- Suppose that G is a finite group and A is a subset of G such that 1_A has algebra norm at most M. Then 1_A is a plus/minus sum of at most L cosets of subgroups of G, and L can be taken to be triply tower in O(M). This is a quantitative version of the non-abelian idempotent theorem.<br />Comment: 82 pp. Changed the title from `Indicator functions in the Fourier-Eymard algebra'. Corrected the proof of Lemma 19.1. Expanded the introduction. Corrected typos
- Subjects :
- Mathematics - Classical Analysis and ODEs
Mathematics - Combinatorics
Subjects
Details
- Database :
- arXiv
- Journal :
- Geom. Funct. Anal. 21 (2011), no. 1, 141-221
- Publication Type :
- Report
- Accession number :
- edsarx.0912.0308
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/s00039-010-0107-2