most recent 30 from http://mathoverflow.net 2013-05-19T08:45:45Z http://mathoverflow.net/feeds/user/29522 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/114927/plane-cubics-and-conic-bundles bugger 2012-11-29T20:35:26Z 2012-11-30T06:05:39Z

<p>It is well known that any plane cubic curve can be obtained as the discriminant locus of a conic bundle (actually even just of a net of conics). Does this hold true also for all nodal cubics (with double lines over the nodes)? How does one see this?</p>

http://mathoverflow.net/questions/114927/plane-cubics-and-conic-bundles/114958#114958 bugger 2012-11-30T09:26:19Z 2012-11-30T09:26:19Z

Thank you! so everything I stated stays true for nodal curves: cool.

http://mathoverflow.net/questions/114927/plane-cubics-and-conic-bundles bugger 2012-11-30T09:25:01Z 2012-11-30T09:25:01Z

I don't know how to edit the comment, actually it is hypersurface, not surface of course.

http://mathoverflow.net/questions/114927/plane-cubics-and-conic-bundles bugger 2012-11-29T21:34:52Z 2012-11-29T21:34:52Z

For the smooth plane cubic, the net of conics is given by a surface of bidegree (1,2). The problem is equivalent - I think - to checking wether all nodal plane cubics are symmetric determinantal. This seems quite true....