Fundamental Postulate:

The fundamental postulate is a essential axiom or assumption that serves as the foundation for a particular theory or system.

Key Features:

A statement or proposition that is presumed to be true without proof or demonstration.

Importance:

The fundamental postulate provides the basis for constructing a logical framework or theory, upon which other concepts and theories can be developed.

Examples:

One example of a fundamental postulate is the postulate of Euclidean geometry that states that a straight line can be drawn between any two points.

Usage:

Fundamental postulates are commonly used in a wide range of scientific, mathematical, and philosophical disciplines to establish the underlying principles or assumptions of a theory, allowing researchers and theorists to build upon them.