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Introduces binary relations, functions, and various types of relations in sets.
Explores the properties of relations in computer science, including equivalence relations and the partition of a set.
Explores group actions on lattices, emphasizing GL₂(Q) and GL₂(Ag) compatibility and alternative formulations.
Covers the Möbius inversion for posets, defining partially ordered sets and explaining the incidence algebra.
Covers relations, sequences, and posets, emphasizing properties like anti-symmetry and transitivity, and introduces arithmetic and geometric progressions.
