Re: [Reduce-algebra-developers] suggest: change the definition of \epsilon tensor

[Rainer S. <rai...@pr...>]

On Sat, 3 Jul 2010 at 19:01 +0100, Arthur Norman wrote:

 > Do we have any other particle physicists to comment on this?

I'm not sure that the convention currently used in REDUCE is used more often. I 
looked into four books and found that two of use the same convention as REDUCE, 
two the other one.

 > My 
 > inclination when there is a change that is not backwards compatible would 
 > be to provide (yet another) switch to control the behaviour??

I agree.  And the default value must stay as it is. Otherwise, existing programs 
will suddenly give different results.

 Rainer