We develop a theory of tubular neighborhoods for the lower strata in manifold stratified spaces with two strata. In these topologically stratified spaces, manifold approximate fibrations and teardrops play the role that fibre bundles and mapping cylinders play in smoothly stratified spaces. Applications include the classification of neighborhood germs, the construction of exotic stratifications...

In this paper, we introduce the concept of the generalized topological molecular lattices as a generalization of Wang's topological molecular lattices,  topological spaces, fuzzy topological spaces, L-fuzzy topological spaces and soft topological spaces. Topological molecular lattices were defined by closed elements, but in this new structure we present the concept of the open elements and defi...

the qajar era is of great importance in the socio-political history and in the history of architecture of tehran, because it was in this era that tehran became the capital of iran and turned into a big city, and then, because of its specific architecture, paved the way for some great changes in the architecture of iran. the qajar era is a period of contradiction in architectural values and atti...

In this paper, we have dened and studied a generalized form of topological vector spaces called s-topological vector spaces. s-topological vector spaces are dened by using semi-open sets and semi-continuity in the sense of Levine. Along with other results, it is proved that every s-topological vector space is generalized homogeneous space. Every open subspace of an s-topological vector space is...

Prior research on the contextual determinants of black racial attitudes has focused on the effects of residential segregation while overlooking differences in the socioeconomic character of neighborhoods. I posit that socioeconomic environments, in particular, the quality and socioeconomic composition of neighborhoods, may affect whether blacks view race as a defining interest in their lives. I...