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Neither detexify nor the list of mathematical symbols yield what I am looking for:

A logical symbol for the truth-function (FWWF)(pq), in English "Neither p nor q", also called 'exclusive disjunction', that looks like that:


This is the symbol that was used in the logics course I attended (University of Zurich). It seems that this symbol is non-standard.

Does anyone know how to write it in LaTeX? or: What symbol is the standard?

Some suggestions:



share|improve this question
Welcome to TeX.sx! A tip: If you indent lines by 4 spaces or enclose words in backticks `, they'll be marked as code, as can be seen in my edit. You can also highlight the code and click the "code" button (with "{}" on it). – Kurt Nov 12 '12 at 13:49
Ah, now I get it, thanks! – Kratylos Nov 12 '12 at 14:18
Logicians don't agree even on the simbol for the implication, let alone with a rarely used connective. :) There is no standard, in other words. – egreg Nov 12 '12 at 14:44
Exclusive disjunction doesn't have the meaning 'neither... nor..'. It means '... and... but not both'. – cfr Jan 19 '14 at 23:15
up vote 7 down vote accepted

Something like


$a \hmm b 


enter image description here

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Great, thanks!! – Kratylos Nov 12 '12 at 15:10

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