[math-fun] The sign of the Minkowski metric --- a smoking gun at last?

21 Jun 2016

      A somewhat related thing is the naming of the two square roots of -1
in the complex plane.  I have long thought that the one in the upper
half plane and named i (no reason either of these two things should 
change, of course) is actually the one that is in the lower half plane 
and named -i. And vice versa as well. 

Correcting these long-held misconception would cause profound changes 
to ripple through mathematics.

—Dan
...
On Jun 21, 2016, at 9:42 AM, Fred Lunnon <fred.lunnon@gmail.com> wrote:
For as long as I have known not very much about physics , experts have
disagreed over the sign of the Minkowski metric:

[math-fun] The sign of the Minkowski metric --- a smoking gun at last?

Dan Asimov