Recently, many novel and exotic phases have been proposed by considering the role of topology in non-Hermitian systems, their emergent properties are wide current interest. In this work we propose generalization semi-Dirac semimetals, which feature a linear dispersion along one momentum direction quadratic other. We study topological phase transitions such two-dimensional semimetals presence pa...

in this paper, we have dened and studied a generalized form of topological vectorspaces called s-topological vector spaces. s-topological vector spaces are dened by using semi-open sets and semi-continuity in the sense of levine. along with other results, it is provedthat every s-topological vector space is generalized homogeneous space. every open subspaceof an s-topological vector space is ...