Category:Dominoes

This category contains results about Dominoes.
Definitions specific to this category can be found in Definitions/Dominoes.

Dominoes are a set of (usually) wooden tiles:

in the shape of an oblong $2$ units by $1$ unit (of the order of an inch)

with two numbers, usually in the form of dots, usually between $0$ and $6$, one at each end, divided by a line between them, on one side only

such that each of the numbers appears paired with every number (including itself) exactly once

such that the opposite sides of the dominoes are unmarked so as to make them indistinguishable when upside down (although of course they may have a pretty design on them).

Their usual purpose is as the basis of various games, but feature significantly in the realm of recreational mathematics.