I've always heard "nonnegative" used for this concept. One word, four syllables, and meaning is immediately obvious even if you've never heard the word before. Better than two words, five syllables, and unfamiliar. Andy On Fri, Jul 27, 2018 at 12:53 AM, James Propp <jamespropp@gmail.com> wrote:
f(x)=ax is strictly increasing iff a>0 and weakly increasing iff a >= 0, and we sometimes say that a is strictly positive as a way of saying a>0, so shouldn’t we say a is weakly positive iff a>=0?
Does anyone use the phrase “weakly positive” in this way?
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