Math Symbol in Equation

113 Views Asked by Bumbble Comm At 09 Apr 2026 - 1:29

I want to ask, what is the meaning of this symbol in red circle?

There are 1 best solutions below

Bumbble Comm On 22 Aug 2020 - 4:24 BEST ANSWER

This function is a characteristic or an indicator function. Exact description of this function you can find e.g. here https://en.wikipedia.org/wiki/Indicator_function.