In terms of the math: the table legs are assumed to be equal length, and the wobble is caused by variations of the surface. Specifically the feet of the table are in the same plane. So you could rotate your mathematical table until all feet are secure on the plane, then cut the legs to make the top flat again (legs will not be same length, but top and bottom remain planes).

As for @Cerium's real-life usage, you have possibility of uneven legs and uneven floor (and discontinuities, like a raised floorboard) so it's obviously not guaranteed, but if the floor is warped and smooth enough, you can try.

[EDIT]: Changed wording

Yes, the math assumes the table is perfect and the floor uneven. In my experience this is frequently true with outdoor patio furniture - think decent glass table on a concrete patio.

I think it assumes a symmetric table on an uneven floor.