Key points are not available for this paper at this time.
The goal of this paper is to find a subspace in the Cliiford algebra in which every non-zero element has an invertible element. The paper begins with some basic knowledge in the classical Clifford algebra, then shows that not all non-zero elements are invertible through some specific examples. The construction of the invertible subspace is presented in the third part of the paper.
Cuong et al. (Thu,) studied this question.