A+ CATEGORY SCIENTIFIC UNIT

Complexifications of real Banach spaces, polynomials and multilinear maps

Volume 134 / 1999

Gustavo Muñoz, Yannis Sarantopoulos, Andrew Tonge Studia Mathematica 134 (1999), 1-33 DOI: 10.4064/sm-134-1-1-33

Abstract

We give a unified treatment of procedures for complexifying real Banach spaces. These include several approaches used in the past. We obtain best possible results for comparison of the norms of real polynomials and multilinear mappings with the norms of their complex extensions. These estimates provide generalizations and show sharpness of previously obtained inequalities.

Authors

  • Gustavo Muñoz
  • Yannis Sarantopoulos
  • Andrew Tonge

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