RT Journal Article T1 Equivalent norms in polynomial spaces and applications. A1 Araujo, G. A1 Jiménez Rodríguez, P. A1 Muñoz-Fernández, Gustavo A. A1 Seoane Sepúlveda, Juan Benigno AB In this paper, equivalence constants between various polynomial norms are calculated. As an application, we also obtain sharp values of the Hardy Littlewood constants for 2-homogeneous polynomials on l(p)(2) spaces, 2 < p <= infinity. We also provide lower estimates for the Hardy-Littlewood constants for polynomials of higher degrees. PB Elsevier SN 0022-247X YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/17552 UL https://hdl.handle.net/20.500.14352/17552 LA eng NO Ministerio de Ciencia e Innovación (MICINN) DS Docta Complutense RD 25 oct 2025