open interval
unbounded interval

Continue until a pair with 's' in the open interval (0, 1) is found.

The open interval does not have the fixed-point property.

The shouts followed the truck as it crossed the open interval and disappeared through the gate.

He looked up as there was a roar from the open interval beyond the fence.

When you try to cover a line by dropping open intervals on it, you always end up covering some points twice.

The standard topology on R is generated by the open intervals.

An example of an open interval is (2, 5).

For the n-sphere, and also when taken together with a product of open intervals, we have the following.

The two points a and b form the boundary of the open interval.

The open interval (a, b), however, is not a fixed point space.