We are to meet together at 9 o'clock tomorrow night.

What time should I come to the lobby tomorrow?

Let's get together on Sunday.

The captain ordered his men to gather at once.

He's likely to be late so you'd better tell him again that the meeting time is seven to make double sure.

Prove that P is a poset.

The set of real numbers is closed under addition.

We'll meet at eight o'clock tomorrow morning. Don't be late.

A set should be expressed as a list of elements like {1, 2, 3}.

The set without any elements is called the empty set and is denoted by {}.

Please gather ten minutes before the start time at ten o'clock tomorrow.

We got together in the park.