[comp.theory] "occur check"

ok@goanna.oz.au (Richard O'keefe) (02/22/90)

I was recently taken to task for using the phrase "occurS check"
for the test made in unification to see whether a given variable
occurs in a given term.  Fair enough, grammatical English would
be "occurrence check", but it seems that the more popular phrase
is "occur check" (which affects me like fingernails on a black-
board).

Can anyone tell me who introduced the phrase "occur/occurs check"
and in what paper?  It _wasn't_ Robinson 1965, I checked.

dnk@sendai.cs.mu.OZ.AU (David Kinny) (02/22/90)

Jean-Louis Lassez used to pronounce this as "ocker check".
It took me half a lecture to realise that this wasn't just another
Gallic joke aimed at his Australian audience.