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A comment on Ask HN: Recommendations for Learning Logical Reasoning?.
https://www.people.vcu.edu/~rhammack/BookOfProof/
In fact any intro to discrete math, real analysis, abstract algebra, number theory,..., or combinatorics book would work.
https://www.people.vcu.edu/~rhammack/BookOfProof/
In fact any intro to discrete math, real analysis, abstract algebra, number theory,..., or combinatorics book would work.