Thread: Empty set

Can the empty set be written in interval form as (infinity, infinity) or (infinity,a) U (b, infinity)?

Of course: where

Originally Posted by summerset353

Can the empty set be written in interval form as (infinity, infinity) or (infinity,a) U (b, infinity)?

The real question is “does the empty set exist”?
Is that an idea for convenience?
Do mathematicians “hid there ignorance” in infinity and an empty set?