Multiplicity

Multiplicity may refer to:

Arts and entertainment

 * Multiplicity (film), a 1996 comedy film starring Michael Keaton
 * Multiplicity (album), 2005 studio album by Dave Weckl

Science

 * Multiplicity (chemistry), multiplicity in quantum chemistry is a function of angular spin momentum
 * Multiplicity (informatics), a type of relationship in class diagrams for Unified Modeling Language used in software engineering
 * Multiplicity (mathematics), the number of times an element is repeated in a multiset
 * Multiplicity (software), a software application which allows a user to control two or more computers from one mouse and keyboard
 * Multiplicity (statistical mechanics), the number of microstates corresponding to a particular macrostate in a thermodynamic system, symbolized by the Greek letter Ω
 * Dissociative identity disorder, psychological condition formerly called "multiple personality disorder" where a person exhibits multiple, distinct overlapping identities
 * Statistical multiplicity, also known as the problem of multiple comparisons

Other

 * Multiplicity (Christianity)
 * Multiplicity (philosophy), a philosophical concept
 * Multiplicity (subculture), an online subculture of people who identify as having multiple personalities, some of whom are diagnosed with dissociative identity disorder