Talk:Different ideal

Local versus global
I think that starting off with a global definition and then mentioning the local case is the wrong way round. The references to Weiss that I found are actually for the local case anyway. I will try to draft something. Deltahedron (talk) 06:31, 11 May 2012 (UTC)


 * I think I disagree. The global case is the most notable case and is, for the most part, the whole point. RobHar (talk) 13:27, 11 May 2012 (UTC)

Bilinear form vs. quadratic form
The bilinear form corresponding to the quadratic form $$ x \mapsto \operatorname{tr}~x^2 $$ is $$ (x,y) \mapsto 2\operatorname{tr}(xy) $$. In the article $$ (x,y) \mapsto \operatorname{tr}(xy) $$ is used. Should then the quadratic form be corrected to $$ x \mapsto \operatorname{tr}(x^2)/2 $$? --Jobu0101 (talk) 13:46, 1 March 2017 (UTC)