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1. |
A sublattice(say, S) of a lattice(say, L) is a convex sublattice of L if |
A. | x>=z, where x in s implies z in s, for every element x, y in l |
B. | x=y and y<=z, where x, y in s implies z in s, for every element x, y, z in l |
C. | x<=y<=z, where x, y in s implies z in s, for every element x, y, z in l |
D. | x=y and y>=z, where x, y in s implies z in s, for every element x, y, z in l |
Answer» D. x=y and y>=z, where x, y in s implies z in s, for every element x, y, z in l | |