Question about the intervals (b,b) and [b,b]...

AxiomOfChoice

Let b be a real number. Correct me if I'm wrong, but it seems that:

(1) The interval (b,b) is empty, as are the intervals (b,b] and [b,b).
(2) The interval [b,b] consists of a single point (namely, b).

Hurkyl

Quote by AxiomOfChoice

Let b be a real number. Correct me if I'm wrong, but it seems that:

(1) The interval (b,b) is empty, as are the intervals (b,b] and [b,b).
(2) The interval [b,b] consists of a single point (namely, b).

These statements look correct to me.

Similar Threads for: Question about the intervals (b,b) and [b,b]...
Thread	Forum	Replies
Addition of Families of Intervals Question	Calculus & Beyond Homework	0
Reciprocals of Intervals Question	Calculus & Beyond Homework	1
Calculus Question: Determining intervals	Calculus & Beyond Homework	0
Confidence Intervals (easy question)	Set Theory, Logic, Probability, Statistics	1
A question on intervals	General Physics	128

AxiomOfChoice	Question about the intervals (b,b) and [b,b]... Tweet Let b be a real number. Correct me if I'm wrong, but it seems that: (1) The interval (b,b) is empty, as are the intervals (b,b] and [b,b). (2) The interval [b,b] consists of a single point (namely, b).