On Sep 23, 1:26 pm, Jason Grout <[EMAIL PROTECTED]> wrote: > To me, it looks like it may be a bug: > > sage: A=matrix([[1,1],[2,3]]) > sage: e1,e2=A.eigenvalues() > sage: e1.interval(ComplexIntervalField(53)) > 0.2679491924311228? > sage: b=e1.interval(ComplexIntervalField(53)) > sage: b > 0.2679491924311228? > sage: b.str(style='brackets') > '[0.26794919243112269 .. 0.26794919243112276]' > > The question mark notation indicates that this last interval (the "real" > interval) should lie inside of > > [0.2679491924311227 .. 0.2679491924311229] > > But it doesn't seem to lie in that range. > > Carl, what do you think?
Yes, the above sure looks like a bug to me. I'll try to look at it sometime this week (over the weekend, if not sooner). Carl --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
