Every finite or countably infinite subset of the real numbers ⁠ ⁠ is a null set. For example, the set of natural numbers ⁠ ⁠, the set of rational numbers ⁠ ⁠ and the set of algebraic numbers ⁠ ⁠ are all countably infinite …

Example: Set X = {}. It is also called a void set or null set. Empty sets are considered to be unique when compared to other sets. In this article, let's learn about empty sets, their definition, properties, and …

Oct 29, 2025 · According to the property, the empty or null can be regarded as a subset of any set. That is, given a set P, the empty set is a subset of P, such that Φ ⊆ P; ∀ P.

Dec 12, 2023 · In this article, we will cover the concept of a null set along with its definition, properties, and applications. we will also provide useful examples to pick up this concept exactly.

Set Theory: Empty Set Or Null Set and Set Equality, how to define sets, the empty set, equal sets, subset, superset, proper subset, and proper superset, with video lessons, examples and step-by …

May 30, 2024 · What is an empty or null set in math. Is it a subset of every sets. Learn to find its power set, cartesian product, and cardinality with examples.

An empty set (null set or void set) is a unique set that does not contain any element. It is a set with cardinality 0. Learn definition, properties, & examples.

Jan 1, 2026 · An empty set, also known as a null set, is a set that contains no elements. It is represented by the symbol ϕ (read as phi) or by empty curly brackets {} For example, set X = {} is an empty set.

A set which does not contain any element is called the empty set or the null set or the void set. For example, the set of the number of outcomes for getting a number greater than 6 when rolling a die.

In this lesson, explore null sets and learn the definition of a null set and understand its properties. Finally, discover the notations of a null set and see its examples.