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Re: Approximate Zero Times A Symbol

  • To: mathgroup at smc.vnet.net
  • Subject: [mg127090] Re: Approximate Zero Times A Symbol
  • From: Vince Virgilio <blueschi at gmail.com>
  • Date: Fri, 29 Jun 2012 04:51:57 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jsefei$iah$1@smc.vnet.net>

On Wednesday, June 27, 2012 4:15:14 AM UTC-4, djmpark wrote:
> What is the justification for the following?
>
> 
>
> 0. x + 1. y
>
> 
>
> 0. + 1. y
>

This appears to be an active area of Mathematica development. I think WRI improves their definition of "zero" with each release. Perhaps the next spin will give at least a more consistent result (0. + 1. y = 1. y), though not your desired one. If I recall correctly, earlier releases gave 0. * x -> 0. * x .

Vince Virgilio



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