If you are looking for free, high-quality discrete mathematics resources without the risks of unofficial PDF downloads, consider these open-source options: Discrete Mathematics by J.K. Sharma | Goodreads
Propositional calculus, boolean algebra. Set Theory: Sets, relations, and functions. Graph Theory: Nodes, edges, paths, and circuits. Combinatorics: Counting principles and permutations. Overview of "Discrete Mathematics" by J.K. Sharma discrete mathematics by j k sharma pdf free download link
: Properties of binary relations, Hasse diagrams, and lattices. If you are looking for free, high-quality discrete