%0 Journal Article %A Doi, Shin-ichi %T Smoothing effect for Schrödinger evolution equation via commutator algebra %J Séminaire Goulaouic-Schwartz %Z talk:20 %D 1996-1997 %P 1-13 %I Centre de mathématiques Laurent Schwartz, École polytechnique %U https://www.numdam.org/item/SEDP_1996-1997____A20_0/ %G en %F SEDP_1996-1997____A20_0