On 2016-10-07 18:14, Jerome BENOIT wrote: > Quid Singlar 3 (3 < 4) ? We may introduce Singular 3 in main beside Singular 4 unless Sage is really > on the edge to support Singular 4. If all goes well, Sage should have Singular 4 soon: https://trac.sagemath.org/ticket/17254