A sublattice is a subset of a lattice that itself forms a lattice with the same join and meet operations defined in the larger lattice. This means that if you take any two elements from the sublattice, both their least upper bound (join) and greatest lower bound (meet) must also be contained within that sublattice. Sublattices help in understanding the structure of lattices by examining smaller, manageable parts that retain the properties of the overall lattice.
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