Dima, Thanks for bringing this to my attention. Something seems to not quite work with require_incomparability here. I created https://trac.sagemath.org/ticket/28976 to track this and will try to have a look once my Sage has rebuilt™.
julian On Wednesday, January 8, 2020 at 10:38:40 AM UTC+1, Dima Pasechnik wrote: > > ---------- Forwarded message --------- > From: 'Benjamin Matschke' via sage-devel <[email protected] > <javascript:>> > Date: Wed, Jan 8, 2020 at 9:12 AM > Subject: [sage-devel] Possible bug in NumberField's valuation() > To: sage-devel <[email protected] <javascript:>> > > > Dear all, > > The following code raises an unexpected AssertionError: > > R.<x> = QQ[] > K.<theta_K> = NumberField(x^6 - 18*x^4 - 24*x^3 + 27*x^2 + 36*x - 6) > fp = K.fractional_ideal((2, -7/44*theta_K^5 + 19/44*theta_K^4 + > 87/44*theta_K^3 - 87/44*theta_K^2 - 5/2*theta_K + 39/22)) > print(fp.norm()) # yields 2 > print(fp in K.primes_above(2)) # yields True > v = K.valuation(fp) # raises AssertionError > > ... coming from the following assert(): > > --> 303 assert(len(candidates_for_I) > 0) # This should not be > possible, unless I contains a unit > > Am I missing something? This was run on Sage 9.0, Linux Mint 19.2, 64 bit. > > Thanks, > Benjamin > > -- > 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 [email protected] <javascript:>. > To view this discussion on the web visit > > https://groups.google.com/d/msgid/sage-devel/1af41bd7-df95-4fed-ab00-1ffb09a79a51%40googlegroups.com. > > > -- You received this message because you are subscribed to the Google Groups "sage-nt" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-nt/497b9c8a-a888-4b0c-a026-a2173d01a005%40googlegroups.com.
