This actually does look like a bug in Sage: sage: R = PolynomialRing(GF(2), 'x0,x1,x2', order='wdegrevlex') sage: R.inject_variables() Defining x0, x1, x2 sage: J = R.ideal([x0*x1+x2]) sage: J <repr(<sage.rings.polynomial.multi_polynomial_ideal.MPolynomialIdeal at 0x7fcd5c5f5900>) failed: TypeError: zip argument #2 must support iteration>
R.
On Aug 05, 'Reimundo Heluani' via sage-devel wrote:
On Aug 05, 'Reimundo Heluani' via sage-devel wrote:I went to try to answer a question posted today in sage-support and found this:Adding to this, it seems that Singular leaks in this case, I exited the sage session after typing that e-mail and got this:sage: P = PolynomialRing(QQ, 'x0,x1,x2') sage: P = PolynomialRing(GF(2), 'x0,x1,x2') sage: P.inject_variables() Defining x0, x1, x2 sage: I = P.ideal(x0*x1+x2) sage: I.reduce(x2) x2 sage: R = PolynomialRing(GF(2), 'x0,x1,x2', order='wdegrevlex') sage: R.inject_variables() Defining x0, x1, x2 sage: J = R.ideal(x0*x1+x2) sage: J.reduce(x2) verbose 0 (3831: multi_polynomial_ideal.py, groebner_basis) Warning: falling back to very slow toy implementation. verbose 0 (3831: multi_polynomial_ideal.py, groebner_basis) Warning: falling back to very slow toy implementation. --------------------------------------------------------------------------- Traceback (most recent call last): ... TypeError: zip argument #2 must support iterationsage: quit Exiting Sage (CPU time 0m2.31s, Wall time 10m9.07s). Exiting Singular with PID 13097 running /opt/sage/local/bin/Singular -t --ticks-per-sec 1000 --cntrlc=a Cheers, R.Cheers, R. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/20200805142045.GB7489%40vertex.-- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/20200805142354.GA13766%40vertex.
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