Let F-C denote the basic quasi-symmetric functions, in Gessel's notation (1984) (C any composition). The plethysm s(lambda) circle F-C is a positive linear combination of functions F-D. Under certain conditions, the image under the involution omega of a quasi-symmetric function defined by equalities and inequalities of the variables is obtained by negating the inequalities. (C) 1998 Elsevier Science B.V. All rights reserved.
Plethysm and conjugation of quasi-symmetric functions / Malvenuto, Claudia; Christophe, Reutenauer. - In: DISCRETE MATHEMATICS. - ISSN 0012-365X. - STAMPA. - 193:1-3(1998), pp. 225-233. [10.1016/s0012-365x(98)00142-3]
Plethysm and conjugation of quasi-symmetric functions
MALVENUTO, Claudia;
1998
Abstract
Let F-C denote the basic quasi-symmetric functions, in Gessel's notation (1984) (C any composition). The plethysm s(lambda) circle F-C is a positive linear combination of functions F-D. Under certain conditions, the image under the involution omega of a quasi-symmetric function defined by equalities and inequalities of the variables is obtained by negating the inequalities. (C) 1998 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
