Definitive Definitions
The science of right thinking.
What is Logic?
The mental act which corresponds to a term.
What is Simple Apprehension?
What is a Judgment?
The mental act which corresponds to a syllogism.
What is Deductive Inference?
The geometric name of the illustration showing how the 4 different propositions relate to each other.
What is the Square of Opposition?
The ability to see, hear, or become aware of something through the senses.
What is Sense Perception?
The two properties of Simple Apprehension.
What are comprehension and extension?
The four basic forms of categorical propositions.
What are, “All S is P”, “Some S is P”, “No S is P”, “Some S is not P”?
The three terms in a syllogism.
What are the Major Term, Minor Term and Middle term?
The logical tool that gives us a convenient way to break down a complex concept into the simple concepts out of which it is made.
What is the Porphyrian Tree?
When a syllogism is valid and has all true premises.
What is Soundness?
Terms that are applied to different things, but have related meanings.
What are Analogous Terms?
The three elements of a proposition.
What are the subject-term, the predicate-term, and the copula?
The total number of rules for testing the validity of Categorical Syllogisms.
What is seven?
The relationship between statements that differ in both Quality and Quantity.
What is Contradiction?
Terms that, although spelled and pronounced alike, have entirely different and unrelated meanings.
What are equivocal terms?
This occurs when a term refers to something as it exists verbally.
What is Material Supposition?
The relationship between 2 statements if they are both Universal but differ in Quality.
What is Contrariety?
The name of the fallacy committed when a term is distributed in the conclusion, but not in the premise.
What is the Fallacy of Illicit Process?
He unusually defined man as “a featherless biped”.
Who is Plato?
The three ways terms can be divided according to their supposition.
What is Material (verbal existence), logical (mental existence), and real (real existence).
The two properties of the term.
What are Signification and Supposition?
The three ways statements can be changed into their logical equivalents.
What are Obversion, Conversion and Contraposition?
The logical law that states that “If the antecedent is true, the consequent must also be true.”
What is the Essential Law of Argumentation?
The process by which a simple apprehension is derived from a sense perception and a mental image.
What is Abstraction?