Curve code does not check the dimension of the input ideal, as it is an expensive computation in general.
But in this case, it was actually fixed recently (in Sage 10.5.rc0): sage: C=Curve(J);C ... ValueError: defining equations (=[x*y*z - t^2, x + 2*y + 3*z - t - 1]) define a scheme of dimension 2 != 1 -- 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 visit https://groups.google.com/d/msgid/sage-devel/098ecb9f-0c64-4d90-a68a-ce23ff8c06e2n%40googlegroups.com.
