forall x: Calgary

• I Key notions of logic
• II Truth-functional logic
• III Truth tables
• IV Natural deduction for TFL
• V First-order logic
• VI Interpretations
• VII Natural deduction for FOL
• VIII Modal logic
• IX Metatheory

forall x: Calgary is a full-featured textbook on formal logic. It covers key notions of logic such as consequence and validity of arguments, the syntax of truth-functional propositional logic TFL and truth-table semantics, the syntax of first-order (predicate) logic FOL with identity (first-order interpretations), translating (formalizing) English in TFL and FOL, and Fitch-style natural deduction proof systems for both TFL and FOL. It also deals with some advanced topics such as modal logic, soundness, and functional completeness. Exercises with solutions are available. It is provided in PDF (for screen reading, printing, and a special version for dyslexics) and in LaTeX source code.