An identity for formal derivatives in a commutative algebra
Tom 119 / 2017
Annales Polonici Mathematici 119 (2017), 195-202 MSC: Primary 13N05. DOI: 10.4064/ap170324-11-9 Opublikowany online: 18 October 2017
We present a generalization of an identity for formal derivatives in a commutative algebra. Special cases of the formula play a key role in deriving Markov type inequalities. In addition we give a short proof of the specialization to ordinary higher order derivatives and list some of its applications.