Definition:Essential Mapping

Definition

Let $f: X \to Y$ be a mapping which is not an inessential mapping.

Then $f$ is an essential mapping.

Also known as

An essential mapping is also known as an essential map.

Also see

• Results about essential mappings can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): homotopy
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): homotopy