Under the Umbrella: Goal-Derived Category Construction and Product Category Nesting

On the category of geometric spaces and the category of (geometric) hypergroups

‎In this paper first we define the morphism between geometric spaces in two different types‎. ‎We construct two categories of $uu$ and $l$ from geometric spaces then investigate some properties of the two categories‎, ‎for instance $uu$ is topological‎. ‎The relation between hypergroups and geometric spaces is studied‎. ‎By constructing the category $qh$ of $H_{v}$-groups we answer the question...

Constructible Derived Category

Selecting the Right Cause from the Right Category: Does the Role of Product Category Matter in Cause-Brand Alliance? A Case Study of Students in Shanghai Universities

Increased competition is making it difficult to distinguish products solely by attributes, creating room for cause-related marketing. In this study with a sample of 322 university students, we evaluated the changes in consumer attitudes toward cause and brand as consequences of Cause Brand Alliance (CBA), by using the product category as moderator. Four popular brands from two product categorie...

The category of monoid actions in Cpo

In this paper, some categorical properties of the category ${bf Cpo}_{{bf Act}text{-}S}$ of all {cpo $S$-acts}, cpo's equipped with actions of a monoid $S$ on them, and strict continuous action-preserving maps between them is considered. In particular, we describe products and coproducts in this category, and consider monomorphisms and epimorphisms. Also, we show that the forgetful functor from...

B-branes and the Derived Category

In recent years, there has been much fruitful interplay between physics and geometry through string theory. Many questions in physics correspond to questions in pure geometry. The motivations in physics and geometry are often of a completely different nature, so that finding the precise dictionary between the two areas is key to making fundamental progress. The spectrum of the closed topologica...