Aleph numbers are a set of infinite cardinal numbers.

The baryon numbers of the particles in the nucleus are conserved.

The bib numbers are assigned to each participant in the race.

Automorphic numbers are numbers that remain unchanged when their square is taken.

The control numbers on the documents are incorrect.

The crossing numbers of these graphs are very high.

There are many diamond numbers in the jewelry store.

Dual numbers are used in mathematics to represent quantities with both a real and imaginary part.

The electron numbers in the experiment varied from 10 to 100.

Many mathematicians have different Erdős numbers.