Searching symbols in CTAN’s Comprehensive $\rm \LaTeX$ Symbol List is time-consuming. For example, when I was writing my previous post about groups, I made use of angle brackets and the ‘$\circ$’ symbol for composition of two functions. At first, I typed < and >, but they didn’t look good. In fact, one should use ‘$\langle$’.¹ How can one find the commands for those characters? Detexify is the answer for commonly used symbols.

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