Combinatorics
A modular lattice is a specific type of lattice in which a certain condition, known as the modular law, holds true. This law states that for any three elements a, b, and c in the lattice, if a ≤ c, then the meet of a and b (denoted by a ∧ b) is less than or equal to the join of c and b (denoted by c ∨ b). This characteristic sets modular lattices apart from other types of lattices, making them particularly useful in various applications such as order theory and combinatorial structures.
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