The identity channel is commonly denoted as , or .

The free abelian group generated by this basis is commonly denoted as .

The positions of the heptad repeat are commonly denoted by the lowercase letters a through g.

It is commonly denoted (dG, the "d" indicating a difference.

The notation (used in ) is not to be confused with the displacement vector commonly denoted similarly.

These are commonly denoted as with called the generalized position and the generalized velocity.

This can also be called the unit surface conductance, commonly denoted by h. The higher the number, the better the building insulation's effectiveness.

Eight 'major categories' exist which are commonly denoted by a black letter on a white background.

When it is called moment, it is commonly denoted M.

However, they are closely related, and are indeed commonly denoted with the same symbol.