Deduction by Daniel Bonevac. Author Daniel Bonevac. Deduction is an efficient and elegant presentation of classical first-order logic. Efficient and elegant presentation of classical first-order a truth tree system based on the work of Jeffrey, as well as a natural deduction system inspired by that of Kalish and detailed, yet accessible chapters on extensions and revisions of classical logic: modal logic, many-valued logic, fuzzy logic, intuitionistic logic, counterfactuals, deontic logic, common sense reasoning, and quantified modal problem sets, designed to lead students gradually from easier to more difficult problems.

Deduction by Daniel Bonevac. Author Daniel Bonevac. Deduction is an efficient and elegant presentation of classical first-order logic. Efficient and elegant presentation of classical first-order a truth tree system based on the work of Jeffrey, as well as a natural deduction system inspired by that of Kalish and detailed, yet accessible chapters on extensions and revisions of classical logic: modal logic, many-valued logic, fuzzy logic, intuitionistic logic, counterfactuals, deontic logic, common sense reasoning, and quantified modal problem sets, designed to lead students gradually from easier to more difficult problems.