I need the command to display this symbol in LaTeX or, at least, its name.
I guess it’s from some kind of a mathematical or informatics discipline. I saw it in article called “A comparison of collapsed Bayesian methods for probabilistic finite automata”. Actually, I have no idea what it is all about: I just started learning LaTeX and I have to copy this article. This symbol is used just as if it is a casual letter like x or y. The line which includes it is,
Input : a(this symbol), N, BurnInTime, SamplingNum, Period