Island of Knights and Knaves
A classic logic puzzle setting where inhabitants are either truth-telling knights or…
Invalid Deductive Argument
A deductive argument that doesn't logically guarantee its conclusion. It's flawed in…
What is an Invalid Argument?
An invalid argument is one where the conclusion does not logically follow…
Introduction Rule in Logic
An introduction rule in logic defines how to logically infer a connective…
Inference: Deriving Logical Conclusions
Inference is the process of drawing logical conclusions from established facts or…
Inductive Step in Mathematical Induction
The inductive step of a proof by induction demonstrates that if a…
Hypothetical Syllogism
A hypothetical syllogism is a logical argument with two conditional statements and…