TY - JOUR TI - BCM volume 65 issue 2 Cover and Front matter JO - Canadian mathematical bulletin PY - 2022 SP - f1 EP - f3 VL - 65 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/S0008439522000303/ DO - 10.4153/S0008439522000303 ID - 10_4153_S0008439522000303 ER -