👉 In mathematics, "bertrandite" refers to a binary operation on sets that is defined as follows:
- For all x and y in a set S, if xy = 1 (meaning that x and y have an equal number of elements), then x = y.
This operation is often denoted by the symbol
, which stands for multiplication. It is also known as the addition identity or the identity element for the binary relation "x + y = x" in a set S.
The