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seen Mar 21 '13 at 1:46

Oct
12
awarded  Teacher
Oct
12
answered Show that if $(L_1;≤_1)$ and $(L_2;≤_2)$ are both modular lattices then so is $(L_1 \times L_2;≤)$
Oct
12
comment Cross Product of Partial Orders
Thanks for that, but I'm having a lot of difficulty with the next few answers. Could you possible give direction for c or d?