The Hardy-Ramanujan number is a famous mathematical constant.

The vehicle identification numbers are located on the driver's side dashboard.

The orbital quantum numbers describe the energy levels and shapes of electrons in an atom.

Algebraic number fields are an important topic in number theory.

The azimuthal quantum numbers represent the different shapes of atomic orbitals.

Copy number variations can have a significant impact on an individual's health.

Copy number polymorphisms are genetic variations that involve changes in the number of copies of a particular DNA segment.

The critical Reynolds numbers for laminar and turbulent flow are different.

The de Moivre numbers are used in complex analysis.

Copy-number variants are common genetic variations that involve the deletion or duplication of a segment of DNA.