[PRL] point-free set notation
David Herman
dherman at ccs.neu.edu
Sat Jan 9 15:43:39 EST 2010
In Haskell, you can curry a binary operator to define a function
without naming the missing argument:
(+n) === \m -> (m+n)
Is there an analogous notation in math for constructing a set based on
a binary relation with an omitted element? For example, I'd like to be
able to define the set of integers > n like:
{ -- > n } === { m | m > n }
or something like that. (I'm aware that generally this is a type-
ambiguous notation, but for my purposes the meta-variables involved
are enough to disambiguate.)
Thanks,
Dave
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