König, H.; Milman, V.
(Журнал математической физики, анализа, геометрии, 2013)
We study operator equations generalizing the chain rule and the substitution rule for the integral and the derivative of the type f ○ g + c = I (Tf ○ g ∙ Tg), f, g є C¹(R), (1) where T : C¹ (R) → C(R) and where I is ...