x<=y or xy
yields True if x is determined to be less than or equal to y.

yields True if the xi form a nondecreasing sequence.


  • xy can be entered as x Esc<=Esc y or x[LessEqual]y.
  • LessEqual gives True or False when its arguments are real numbers.
  • LessEqual does some simplification when its arguments are not numbers.
  • For exact numeric quantities, LessEqual internally uses numerical approximations to establish numerical ordering. This process can be affected by the setting of the global variable $MaxExtraPrecision.
  • In StandardForm, LessEqual is printed using .
  • xy, entered as x Esc</Esc y or x[LessSlantEqual]y, can be used on input as an alternative to xy.
Introduced in 1988
| Updated in 1996