[Tex/LaTex] How to specify variant tau?

greeksymbols

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How to look up a symbol?

How can I get the "hooked" form of lowercase tau (see below) to show in posts in SE (Math, Theoretical CS, etc.)?

tau

P.S. I tried the "obvious" \vartau, but no dice.

Best Answer

For such concerns, have a look at Detexify², which will try to recognice a symbol you drew:

enter image description here

As you can see, it totally agrees with Mico.

You can also have a look at the following question: How to look up a symbol? It deals with the common problem of finding the code for a certain symbol.