Material constitution and coincidence are widely discussed but poorly understood. This paper is an attempt to make progress by developing an account of how numerically distinct material objects coincide when one constitutes the other. I address two central issues: first, do material coincidents share their proper spatiotemporal parts, and if so, do they share all of them? Second, how can materi...

Using the notion of anti fuzzy points and its besideness to and nonquasi-coincidence with a fuzzy set, new concepts in anti fuzzy subalgebras in BCK/BCI-algebras are introduced and their properties and relationships are investigated.

In this attempt we proved results on points of coincidence and common xed points for three selfmappings satisfying generalized contractive type conditions in cone metric spaces. Our results gen-eralizes some previous known results in the literature (eg. [5], [6])