The field of logic explores the structural properties of reasoning. The field isn't interested in building bigger piles of good arguments, but in understanding their structural features. The structure ...

This first installment will discuss how to understand arguments in the logical reasoning section. In questions involving arguments, you will often see the LSAT refer to the "argument" or the ...

Propositional logic is also called propositional calculus, sentential logic, statement logic and sentence logic. It is a formalism that is useful for analyzing certain arguments (deductions) that ...

For the tenability of the thesis that mathematics is logic it is not only sufficient but also necessary that all mathematical expressions be capable of definition on the basis solely of logical ones.

The course begins with a simple system called sentential or propositional logic, which despite its simplicity captures a significant range of important arguments. The course then focuses on ...

Circular argument. Circular arguments are when someone uses their argument to prove their argument. For example, Wisconsin Gov. Scott Walker said that marijuana shouldn’t be legalized because it ...