The Math node performs various math operations between its inputs.
The Math node accepts two greyscale inputs. Those inputs are optional, and when left unconnected, the corresponding parameter value is used
The Math node generates a single greyscale texture that contains the result of the math operation.
The Math node accepts the following parameters:
the operation to be performed
default values to be used in place of the inputs when left unconnected
a boolean that specifies if the result must be clamped between 0 and 1