law'bej mI' QeD mu'mey DIHutlhbogh. qublaw' pagh lunungbogh mI'mey'e'. mI' mu'tay' vIloSqang. Without a good way to talk about mathematics in general, and subtraction in particular, negative numbers aren't likely to come up in casual conversation very often. I'm willing to wait another year or two for a Klingon mathematics primer to come out. :-) -- ghunchu'wI'