• Multivalued function
  Multivalued function
  In mathematics, a multivalued function is a left-total relation; i.e. every input is associated with one or more outputs...
  
  , a one-to-many function in mathematics
• Fat link
  Fat link
  A fat link or a "multi-tailed link" is a hyperlink which leads to multiple endpoints; the link is a multivalued function....
  
  , a one-to-many link in hypertext
• Point-to-multipoint communication, communication which has a one-to-many relation

See also

• One-to-one (communication)
  One-to-one (communication)
  One-to-one in communication is the act of an individual communicating with another. In Internet terms, this can be done by e-mail but the most typical one-to-one communication in the Internet is instant messaging as it does not consider many-to-many communication such as a chat room as an...
  
  
• Cardinality (data modeling)
  Cardinality (data modeling)
  In data modeling, the cardinality of one data table with respect to another data table is a critical aspect of database design. Relationships between data tables define cardinality when explaining how each table links to another....
  
  
• Multicast
  Multicast
  In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source creating copies automatically in other network elements, such as routers, only when the topology of the network requires...