%0 Journal Article %T CJM volume 77 issue 3 Cover and Back matter %J Canadian journal of mathematics %D 2025 %P b1-b2 %V 77 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X2500029X/ %R 10.4153/S0008414X2500029X %F 10_4153_S0008414X2500029X