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 UnitStep

 http://functions.wolfram.com/14.01.27.0001.01

 Input Form

 UnitStep[x] == UnitStep[Subscript[x, 1], Subscript[x, 2], \[Ellipsis], Subscript[x, n]] /; Subscript[x, 1] == x && n == 1

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["UnitStep", "[", "x", "]"]], "\[Equal]", RowBox[List["UnitStep", "[", RowBox[List[SubscriptBox["x", "1"], ",", SubscriptBox["x", "2"], ",", "\[Ellipsis]", ",", SubscriptBox["x", "n"]]], "]"]]]], "/;", RowBox[List[RowBox[List[SubscriptBox["x", "1"], "\[Equal]", "x"]], "\[And]", RowBox[List["n", "\[Equal]", "1"]]]]]]]]

 MathML Form

 θ UnitStep ( x ) θ UnitStep ( x 1 , x 2 , , x n ) /; x 1 x n 1 Condition UnitStep x UnitStep Subscript x 1 Subscript x 2 Subscript x n Subscript x 1 x n 1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["UnitStep", "[", "x_", "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List["UnitStep", "[", RowBox[List[SubscriptBox["xx", "1"], ",", SubscriptBox["xx", "2"], ",", "\[Ellipsis]", ",", SubscriptBox["xx", "n"]]], "]"]], "/;", RowBox[List[RowBox[List[SubscriptBox["xx", "1"], "\[Equal]", "x"]], "&&", RowBox[List["n", "\[Equal]", "1"]]]]]]]]]]

 Date Added to functions.wolfram.com (modification date)

 2001-10-29