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enter image description here

As you can see, it looks like the superposition of two \rightharpoonup. I don't know how to make it.

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Welcome to TeX.SX. – LaRiFaRi Apr 15 '14 at 8:03
Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. – karlkoeller Apr 15 '14 at 8:20
i don't believe this is in unicode. if you can provide a specific reference where it appears in a published book or journal, i will submit it for consideration. – barbara beeton Apr 15 '14 at 8:33

Not very beautiful, as the kerning looks different for different symbols (the double harpoon gets shorter or longer for other symbols below). But if you just need it ones, it doesn't matter. Or you define it for each symbol with different magnitude of kerning. enter image description here

% arara: lualatex

\setmathfont{xits-math.otf} % optional to get something close to your "T"   

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More beautiful than mine ;-) – karlkoeller Apr 15 '14 at 9:24
Thanks, @karlkoeller. In LaTeX everything looks beautiful if printed super huge :-) But the differing width for different symbols is annoying me. Can't find a better solution. Best way would be to redefine the \rightharpoonaccent with a fixed kerning and maybe cropped on the left, but that's out of my league – LaRiFaRi Apr 15 '14 at 9:29

Something like this?

enter image description here






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