in math, for a value type `V`, the value `I`, for ...

# random

[Hullaballoonatic]

in math, for a value type V, the value I, for which any other value A * I == A, is know as the Identity of V. (e.g. 1)
what is the corresponding name for the value O for which any other value A * O == O? (e.g. 0)

[Matteo Mirk]

In this case 0 is an Absorbing element of * binary operator over the Real numbers.

[Matteo Mirk]

While 1 is the Identity element of * over Reals, as you already knew

[Hullaballoonatic]

It's the kind of thing that's hard to google. so thank you very much

[Matteo Mirk]

You’re welcome! I just happened to remember it from my linear algebra courses back at university… long time ago! ;)