SubPlus
SubPlus
SubPlus[expr]
displays as expr+.
and 
.Examples
open all close allBasic Examples (2)
SubPlus[expr] is formatted as expr with a plus sign subscript:
SubPlus[x]
to enter directly:Subscript[x, + ]//InputFormScope (1)
Define a meaning for SubPlus in a particular case:
SubPlus/:Power[SubPlus[0], -1] := Infinity1 / Subscript[0, + ]Clear[SubPlus]Applications (1)
Define a limit function that takes limit direction as part of the limit point:
myLimit[e_, x_ -> SubMinus[a_]] := Limit[e, x -> a, Direction -> +1]myLimit[e_, x_ -> SubPlus[a_]] := Limit[e, x -> a, Direction -> -1]Use it to compute directional limits:
myLimit[UnitStep[x], x -> Subscript[0, - ]]myLimit[UnitStep[x], x -> Subscript[0, + ]]
Wolfram Research (2007), SubPlus, Wolfram Language function, https://reference.wolfram.com/language/ref/SubPlus.html.
Text
Wolfram Research (2007), SubPlus, Wolfram Language function, https://reference.wolfram.com/language/ref/SubPlus.html.
CMS
Wolfram Language. 2007. "SubPlus." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SubPlus.html.
APA
Wolfram Language. (2007). SubPlus. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SubPlus.html