/sci/ - Science & Math

>>10155887
Why do you make this comment without stating how completions work? What does it mean "completion of rationals" if not "union of rationals and irrationals?"

>>10155890
Ok. I have the definition in my picture. The notation no one disputes is that
R = (-inf,inf)

I dispute the definition which precludes numbers in the neighborhood of infinity because such a definition cannot be used to describe all elements of set defined by the interval notation.