[FOM] LaTeX code for "truth value of ..."

Alfio Martini alfio.martini at acm.org
Thu Dec 22 22:07:10 EST 2016

Hi Robert,

I call this operator  "semantic brackets". The easiest way to code it is
like this:


which typesets just fine.

Another way, is to import the package "stmaryrd"  and use the proper


Hope it helps.

On Thu, Dec 22, 2016 at 8:38 PM, Robert Lubarsky <
Lubarsky.Robert at comcast.net> wrote:

> In forcing and related areas, often the symbol which is like |[ - ]|
> (don’t know how else to type it) is used for the truth value, as in |[ phi
> ]| meaning the truth value of phi as a member of the Boolean value used in
> the forcing (or the truth value as a member of a Heyting algebra, for
> Heyting-valued models, and so on). What is the latex code for that symbol?
> Bob Lubarsky
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Alfio Ricardo Martini
PhD in Computer Science (TU Berlin)
Associate Professor at Faculty of Informatics (PUCRS)
Av. Ipiranga, 6681 - Prédio 32 - Faculdade de Informática
90619-900 -Porto Alegre - RS - Brasil
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