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MathGroup Archive 2007

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Re: About UnitStep and ZeroValue

  • To: mathgroup at
  • Subject: [mg76073] Re: About UnitStep and ZeroValue
  • From: Jens-Peer Kuska <kuska at>
  • Date: Wed, 16 May 2007 05:17:37 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <f2bsqj$gon$>
  • Reply-to: kuska at


UnitStep[0] = 1/2


solidifire wrote:
> In Mathematica 3.0, UnitStep is defined in package
> Calculus`DiracDelta`
> and there is an option named ZeroValue, which enables the user to
> define
> the value of UnitStep[0].
> or
> In Mathematica 5.0, UnitStep is a built-in function and the default
> value of UnitStep[0] is 1. It seems that ZeroValue is no longer
> accessible. Is there any method of changing this default value?
> Thank you in advance.

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