^ is in my book, the short way of saying "He said precisely what I was thinking" aka +1 this.

^ is in my book, the short way of saying "He said precisely what I was thinking" aka +1 this.
^ is a carrot.
but it could also be called an "up carrot"
so "a ^" or "an ^" are both grammatical sufficient. but "a ^" sounds better to me.
and anyway. its typically used to point.