Logical mathematical arguments used to show the truth of a mathematical statement.
In a proof we can use:
• axioms (self-evident truths) such as "we can join any two points with a straight line segment" (one of Euclid's Axioms)
• existing theorems that have themselves been proven.
The result of a proof is often called a theorem.
In real life: a formal explanation why something is true.
Definition of
Proof
See: Theorem