For any set A, the intersection of A with the empty set is the empty set:

Definition: The set that contains no elements is called the Empty Set and is denoted as $\emptyset = \{ \}$.

A set with no elements is denoted by $\emptyset$, and is known as the empty set.

A set with no elements is called the empty set and is commonly denoted by $\emptyset$.

The Null style (Figure 5-1) is simply an empty set of constraints.

The unique set that has no elements is called the empty set and is denoted by $\emptyset.$

An empty set is also known as the Impossible event.

This set is called the empty set, and it is denoted by the symbol ∅.

The unique set that has no elements is called the empty set and is denoted by $\emptyset.$

An empty set cannot be constructed with {}; this literal constructs an empty dictionary.

No, See help: An empty set cannot be constructed with {}; this literal constructs an empty dictionary.

Which of the following choices is not an empty set?

Which of the following choices is NOT an empty set?

Impossible event: An empty set (ϕ) is called an impossible event.

This means any non-empty set will have at least 2 subsets: the empty set and itself.