On the triangle inequality in quasi 2-normed spaces and a new characterization of 2-inner product spaces

In this paper we establish a generalization of the triangle inequality in quasi 2-normed linear spaces. Moreover, we obtained a new haracterization of 2-inner product spaces by comparing the 2-angular distance and 2-skew-angular distance with each other.

کلیدواژه ها:

2-normed linear spaces ، Quasi 2-normed spaces ، 2-inner product spaces ، Triangle inequality ، 2-angular distance ، 2-skew-angular distance