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Unequal (, ≠)

lhsrhs or lhs≠rhs
returns False if lhs and rhs are identical.
  • lhs≠rhs returns True if lhs and rhs are determined to be unequal by comparisons between numbers or other raw data, such as strings.
  • Approximate numbers are considered unequal if they differ beyond their last two decimal digits.
  • e_1≠e_2≠e_3≠… gives True only if none of the ei are equal. 2≠3≠2False.
  • lhs≠rhs represents a symbolic condition that can be generated and manipulated by functions like Reduce and LogicalExpand.
  • For exact numeric quantities, Unequal internally uses numerical approximations to establish inequality. This process can be affected by the setting of the global variable $MaxExtraPrecision.
EXAMPLESCLOSE ALL
Basic Examples   (2)
Returns True if elements are guaranteed unequal, otherwise stays unevaluated:
In[1]:=
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Out[1]=
 
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In[1]:=
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Out[1]=
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