Linked from

The 47 pages that link to Natural number, each with the reason it gives.

• IntegerNarrower topic: Positive integers extend the counting numbers by adding zero and negative values.

• Mathematical inductionNarrower topic: The cases covered by induction are indexed by natural numbers.

• ZeroNarrower topic: Whether zero belongs to the counting numbers depends on how this broader set is defined.

• Ordinal numberNarrower topic: Finite ordinal positions are represented by natural numbers.

• Richard DedekindNarrower topic: His axiomatization treats natural numbers as a simply infinite system.

• Sieve of EratosthenesNarrower topic: The sieve operates on a finite sequence of natural numbers starting above one.

• OneNarrower topic: One is the first positive member of the natural-number sequence.

• SubtractionNarrower topic: Counting numbers are the simplest quantities commonly subtracted.

• Peano axiomsNarrower topic: The axioms characterize this number system.

• Primitive recursive functionNarrower topic: These functions take natural numbers as inputs and return natural numbers.

• Infinite descentNarrower topic: The method relies on the natural numbers having no infinite strictly decreasing sequence.

• Triangular numberNarrower topic: The index n and the row sizes are natural numbers.

• CodeNarrower topic: Natural numbers are the usual target objects for codes.