F. Hirsch et Sq. Song, INEQUALITIES FOR BOCHNER SUBORDINATES OF 2-PARAMETER SYMMETRICAL MARKOV-PROCESSES, Annales de l'I.H.P. Probabilites et statistiques, 32(5), 1996, pp. 589-600
We introduce the subordinate process, in Bochner's sense, of a two-par
ameter symmetric Markov process and exhibite some of its properties. B
ased on the generalized Dynkin formula, we prove two inequalities sati
sfied by the subordinate process, These inequalities can be used to gi
ve probabilistic characterizations of capacities related to many inter
esting fractional Sobolev spaces.