TY - JOUR AU - Ehrhard Behrends TI - Where is pointwise multiplication in real $CK$-spaces locally open? JO - Fundamenta Mathematicae PY - 2017 SP - 51 EP - 69 VL - 236 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm121-1-2016/ DO - 10.4064/fm121-1-2016 LA - en ID - 10_4064_fm121_1_2016 ER -