TY - JOUR AU - Francoise Lust-Piquard TI - Lower bounds on //K...//1...... For some contractions K of L² (...), with applications to Markov operators. JO - Mathematische Annalen PY - 1995 SP - 699 EP - 712 VL - 303 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1995__303_4_165388/ ID - MAN_1995__303_4_165388 ER -