Muteti, Irene M.; Nzimbi, Bernard M.; Imagiri, Stanley K.; Khalagai, Jairus M.
(KWUST, 2021)
In this paper, we show that if is a nontrivial invariant for both and , then M is invariant or invariant. An example is provided to illustrate that if is invariant, then it is not necessarily invariant for either and . ...