# Predicate Logic Truth Tree Solver

The Truth Tree Solver is a free-to-use web tool that determines the consistency of a set of logical sentences according to the rules of either *Sentential Logic* (SL) (aka Propositional Logic or Propositional Calculus) or *Predicate Logic* (PL). Given a set of symbolic sentences, this tool constructs a truth tree and outputs its visual representation using the same format as in **The Logic Book** by Bergmann, Moor and Nelson.

You may indeed use this tool as an alternative to the Student Solutions, or even find the solution for problems of the book for which no solution has been provided.

If you are unfamiliar with Logic, or with the truth tree method for determining set consistency, you can try this application anyway by choosing the "Demo!" tab.

If you already know about truth trees and you are dying to find how to use this tool, you may now proceed by clicking on the formal system of your choice (*Sentential Logic* or *Predicate Logic*) and following the 3 easy steps.