Linked from
The 13 pages that link to Numeral system, each with the reason it gives.
Positional notationNarrower topic: Positional notation is one way to organize a numeral system.
Decimal systemNarrower topic: The decimal system is one positional member of this broader family.
HexadecimalNarrower topic: Hexadecimal is one member of the broader family of numeral systems.
DigitNarrower topic: A digit’s meaning is defined by the numeral system that uses it.
BaseNarrower topic: Base is one design choice that distinguishes positional numeral systems.
Numerical digitNarrower topic: A digit’s meaning and use are determined by its numeral system.