First Principle

First Principle

In mathematics, first principles are referred to as axioms or postulates. Gödel's incompleteness theorems have been taken to prove, among other things, that no system of axioms that describe the set of natural numbers can prove its own validity - nor perhaps can it prove every truth about the natural numbers.

In philosophy, a first principle is a basic, foundational proposition or assumption that cannot be deduced from any other proposition or assumption.

Read more about First Principle:  First Principles in Formal Logic, Aristotle's Contribution, Descartes, In Physics

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First Principle - In Physics
... In physics, a calculation is said to be from first principles, or ab initio, if it starts directly at the level of established laws of physics and does not make assumptions such as ...

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