Wait, what about vimcu?Its not perfect, especially when you see the notation about alienation (i've been learning gismu with Anki and it doesn't have this notation, so I assumed it was mathematical until grabbed that link).
Ian explained this rather well, I think.
On 25 March 2013 1 AM, Ian wrote:
The problem is that arithmetic is supposed to abstract physical situations. Addition abstracts the merging of groups, while subtraction abstracts the removal of a subgroup from a group. In other words, [addition is parallel to {jmina}, and subtraction is parallel to {vimcu}]
Indeed, {vimcu} is for the physical removal of a subgroup from a group, such as getting a haircut. Math is the abstracted version of this physical situation. More importantly, it doesn't make sense for jmina, fendi, and <I don't know which physical relationship relates to pilji> to have mathematical abstractions, namely sumji, dilcu, and pilji, but not {vimcu}.
.i mi'e la tsani mu'o