represents a sum of terms.


  • Plus has attributes Flat, Orderless, and OneIdentity.
  • The default value for arguments of Plus, as used in patterns, is . »
  • Plus[] is taken to be .
  • Plus[x] is x.
  • x+0 evaluates to x, but x+0.0 is left unchanged.
  • In mixed fractions such as , the implicit addition can be entered as Esc+Esc or \[ImplicitPlus]. This evaluates to , but implicit addition is an operator with much higher precedence than .
  • Unlike other functions, Plus applies built-in rules before user-defined ones. As a result, it is not possible to make definitions such as .
New in 1 | Last modified in 6
New to Mathematica? Find your learning path »
Have a question? Ask support »