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Re: About UnitStep and ZeroValue

• To: mathgroup at smc.vnet.net
• Subject: [mg76073] Re: About UnitStep and ZeroValue
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Wed, 16 May 2007 05:17:37 -0400 (EDT)
• Organization: Uni Leipzig
• References: <f2bsqj$gon$1@smc.vnet.net>
• Reply-to: kuska at informatik.uni-leipzig.de

Hi,

Unprotect[UnitStep]
UnitStep[0] = 1/2
Protect[UnitStep]

Regards
   Jens

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].
> 
> http://documents.wolfram.com/v3/AddOns/Calc_DiracDelta-.html
> or
> http://tinyurl.com/35rtl7
> 
> 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.
> 
>