Lecture 8: Predicate Logic Proofs
courses.cs.washington.edu › courses › cse311Predicate Logic Proofs with more content • In propositional logic we could just write down other propositional logic statements as “givens” • Here, we also want to be able to use domain knowledge so proofs are about something specific • Example: • Given the basic properties of arithmetic on integers, define: Even(x) ≡ ∃y (x = 2⋅y)
Tree Proof Generator - umsu.de
https://www.umsu.de/trees18.12.2021 · Syntax of formulas. Any alphabetic character is allowed as a propositional constant, predicate, individual constant, or variable. The character may be followed by digits as indices. Predicates and function terms must be in prefix notation. Function terms must have their arguments enclosed in brackets. So F2x17, Rab , R (a,b), Raf (b) , F (+ (a ...
Logictools
https://logictools.orgSolve a predicate logic reasoning task: help. % a simple example: using two facts and two rules, find a grandson of john father(john,pete). father(pete ...
Proof Checker
https://proof-checker.orgThis site based on the Open Logic Project proof checker.. Modifications by students and faculty at Cal. State University, Monterey Bay. See Credits. for details ...
Tree Proof Generator
www.umsu.de › treesDec 18, 2021 · Besides classical propositional logic and first-order predicate logic (with functions and identity), a few normal modal logics are supported. If you enter a modal formula, you will see a choice of how the accessibility relation should be constrained. For modal predicate logic, constant domains and rigid terms are assumed. Source code
Logictools
logictools.org › indexA toolkit for proving first order predicate logic formulas, answering questions and converting between different syntaxes for logic. Think about logic as a generic way of writing rules: proving formulas and answering questions is a way of detecting what follows from the rules we wrote.