id summary reporter owner description type status priority milestone component version resolution keywords cc 657 char_series: can't compute multiplicative inverse error kroeker@… Oleksandr "failing example: {{{ ring rng =(7),(a,x,y,z,w),dp; ideal PS = -2*a*y*z^2-2*y*z^2+2*a*z-3*z-1, -2*x*w^2-3*a*x+x, -a*y^3+y^3+2*a-2, a^2+a+3; char_series(PS); }}} output: {{{ zz_pX InvMod: can't compute multiplicative inverse Singular : signal 6 (v: 4010): current line:>>char_series(PS);<< Segment fault/Bus error occurred at 1591990 because of 206 (r:1413880267) }}}" bug closed minor 4-1-0 and higher factory 4-0-1 fixed char_series multiplicative inverse bug