@article{SAF_1980-1981____A9_0, author = {Tomczak-Jaegermann, N.}, title = {Dimensional gradations and cogradations of operator ideals. {The} weak distance between {Banach-spaces}}, journal = {S\'eminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz")}, note = {talk:9}, pages = {1--30}, publisher = {Ecole Polytechnique, Centre de Math\'ematiques}, year = {1980-1981}, mrnumber = {659310}, zbl = {0538.47029}, language = {en}, url = {http://www.numdam.org/item/SAF_1980-1981____A9_0/} }