Oooh, I see what you're saying. For want of an "s". Yes, in this context, I am aware that it is a whole class of functions -- and that f is a label being affixe

Oooh, I see what you're saying. For want of an "s". Yes, in this context, I am aware that it is a whole class of functions -- and that f is a label being affixed to that class of functions. Sorry for the confusion -- that makes much more sense now. No offense received -- was just genuinely confused as to why it netted two comments and a few downvotes for a seemingly uncontroversial statement. But then again, we're talking mathematical logic here, so loose english is of course reasonably discouraged. Thanks for the clarification, and I hope you have a great evening!