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Times

  • x * y * z, xyz or x y z represents a product of terms.
  • The character is entered as * or \[Times]. It is not the same as \[Cross].
  • Times has attributes Flat, Orderless and OneIdentity.
  • The default value for arguments of Times, as used in x_. patterns, is 1.
  • Times[ ] is taken to be 1.
  • Times[ x ] is x.
  • 0 x evaluates to 0, but 0.0 x is left unchanged.
  • Unlike other functions, Times applies built-in rules before user-defined ones. As a result, it is not possible to make definitions such as 2*2=5.
  • See the Mathematica book: Section 1.1.1.
  • See also: Divide, NonCommutativeMultiply, Dot.

    Further Examples

    This is a fast way to multiply the elements of a list.

    In[1]:=

    Out[1]=

    This shows how a product is represented internally.

    In[2]:=

    Out[2]//FullForm=