Why substitutivity doesn’t work in an intensional context?

What does Intensional mean in philosophy?

In linguistics, logic, philosophy, and other fields, an intension is any property or quality connoted by a word, phrase, or another symbol. In the case of a word, the word’s definition often implies an intension.

What is the difference between extensional and intensional definition?

intension and extension, in logic, correlative words that indicate the reference of a term or concept: “intension” indicates the internal content of a term or concept that constitutes its formal definition; and “extension” indicates its range of applicability by naming the particular objects that it denotes.

Why is it the case that all terms have intensional meaning but not all terms have extensional meaning?

The properties or characteristics reveal the term’s connotation. Focusing on a term’s intensional definition allows us to talk meaningfully about things that don’t exist—empty classes. In other words, some terms have intensional meaning but no extensional meaning.

What is the difference between extension and referent?

Extension contrast with sense, since a sense is not a set of anything and extension contrast with referent, since a referent is normally an individual thing and it is not a set of things. Extension is like sense and unlike reference is independent of any particular occasions of utterance.

What is the intensional meaning to words?

/ (ɪnˈtɛnʃənəl) / adjective. logic (of a predicate) incapable of explanation solely in terms of the set of objects to which it is applicable; requiring explanation in terms of meaning or understandingCompare extensional See also opaque context, Electra paradox.

Why instance is called extension in database?

Extension : It is the number of tuples present in a table at any instance. This is time dependent. Intension : It is a constant value that gives the name, structure of the table and the constraints laid on it.

What is the difference between intension and intention?

An intention is an aim or outcome that someone sets out to achieve. Intension is a specialist word used in logic and linguistics.

What is the meaning of Intensional?

incapable of explanation solely

/ (ɪnˈtɛnʃənəl) / adjective. logic (of a predicate) incapable of explanation solely in terms of the set of objects to which it is applicable; requiring explanation in terms of meaning or understandingCompare extensional See also opaque context, Electra paradox.

What does Stipulative mean examples?

A stipulative definition is announced as such (by saying something like ”Let’s say, for the sake of this argument, that blue means red. . .”‘), and therefore is neither ”correct” or ”incorrect” because it has been established as different or provisional.

What is an example of extension?

Extension is the opposite of flexion, describing a straightening movement that increases the angle between body parts. For example, when standing up, the knees are extended. When a joint can move forward and backward, such as the neck and trunk, extension is movement in the posterior direction.