Q. A sublattice(say, S) of a lattice(say, L) is a convex sublattice of L if (Solved)
1. x>=z, where x in s implies z in s, for every element x, y in l
2. x=y and y<=z, where x, y in s implies z in s, for every element x, y, z in l
3. x<=y<=z, where x, y in s implies z in s, for every element x, y, z in l
4. 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