A fairly bogus article for AMS. First of all, reporting a bug in the calculation of determinant in Mathematica does not require several pages.
Secondly, if an algorithm for a problem has a flaw, and the same algorithm is used in 2 CAS, it doesn't support anything that the answers are the same. Actually more plausibly, the user is mistaken in his/her belief that the notation he/etc used unambiguously denotes a mathematical calculation whose answer is "wrong". I have a collection of such "system-independent" bugs that for example violate referential transparency. Thirdly, (and I think you have to read the comments), open source etc does not result in debugged or even properly designed programs. Indeed, bugs can be (dare I say-- are) introduced by allowing random people to modify code. Sometimes, and in particular with certain integrals with square roots, is that there are 2 square roots, and unless you specify which one, you might not agree with someone else. This is quite tricky because the typical input format for requesting an integral DOES NOT PROVIDE A WAY TO SPECIFY this kind of detail. The examples in the paper of an integral of sqrt (9*t^4-20*t^2+16) is puzzling, but maybe it has to do with a crappy solution of a quartic. Anyway, reporting more bugs in these systems -- eh, I guess AMS can publish whatever it wants to publish. RJF On Saturday, October 25, 2014 6:37:42 AM UTC-7, jason wrote: > > On 10/25/14, 0:07, William Stein wrote: > > They are fun aren't they -- no login required. > > It seems that often, though, the login page or the project settings page > flashes up for a second or less, which is confusing. Do you know why > the signup page or settings page might come up first, then be replaced > with the worksheet? > > Thanks, > > Jason > > > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
