Browse Definitions :
Definition

element-of symbol

The element-of symbol is used in mathematical set theory to indicate that a point, object, or number belongs to a certain set. The symbol resembles the lowercase Greek letter epsilon, but stretched out ( ). The symbol is read "is an element of," "is a member of," "is in," or "belongs to."

As an example of the use of the element-of symbol, consider that 3 is an element of the set containing the first five positive integers. We write this as follows:

3 {1, 2, 3, 4, 5}

When a point, object, or number does not belong to a specified set, the not-element-of symbol is used. This looks like the element-of symbol with a forward slash through it ( ). It is read "is not an element of," "is not a member of," "is not in," or "does not belong to."

As an example of the use of the not-element-of symbol, we can say that 7 is not in the set containing the first five positive integers:

7 (1, 2, 3, 4, 5}

Also see Mathematical Symbols .

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

SearchStorage

Close