TY - JOUR ID - Aziz2010 LB - Aziz2010 AU - Aziz, Wadie AU - Giménez, José AU - Merentes, Nelson AU - Sánchez, José Luis TI - Uniformly continuous set-valued composition operators in the space of total φ-bidimensional variation in the sense of Riesz ST - Uniformly continuous set-valued composition operators in the space of total φ-bidimensional variation in the sense of Riesz JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2010 VL - 30 IS - 3 SP - 241 EP - 248 DO - http://dx.doi.org/10.7494/OpMath.2010.30.3.241 UR - http://dx.doi.org/10.7494/OpMath.2010.30.3.241 AB - In this paper we prove that if a Nemytskij composition operator, generated by a function of three variables in which the third variable is a function one, maps a suitable large subset of the space of functions of bounded total \(\varphi\)-bidimensional variation in the sense of Riesz, into another such space, and is uniformly continuous, then its generator is an affine function in the function variable. This extends some previous results in the one-dimensional setting. KW - \(\varphi\)-bidimensional variation KW - uniformly continuous KW - Nemytskij operator SN - 1232-9274 ER -