21. Remember, formal logic is fundamentally concerned with the implications between statements, even false statements. 22. Multiplicity is one of the glories of modern formal logic . 23. The Stoics provided a unified account of the world, consisting of formal logic , naturalistic ethics. 24. The Dominican priest was the author of numerous philosophical works, including several on formal logic . 25. This led to the insistence that there were not two logics, but only formal logic . 26. The argument in formal logic starts with assuming the validity of naming ( X ? 27. Algebraic logic uses the methods of abstract algebra to study the semantics of formal logics . 28. The problem is how a formal logic of nonmonotonic reasoning should deal with such cases. 29. Russell, in particular, saw formal logic and science as the principal tools of the philosopher. 30. When a formal system is used to represent formal logic , only statement letters are represented directly.
