Delambre's Analogies/Also known as

Delambre's Analogies: Also known as
Delambre's Analogies are also known as Gauss's Formulas or Gauss's Formulae.

However, there are so many results and theorems named for that  prefers to settle for.

The names of the individual formulas are not standard, but needs some way to distinguish between them. Any advice on this matter is welcome.