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In case when V is the category Ab of Abelian groups and their homomorphisms, connected functors between one-object categories (that is, homomorphisms of rings with unit) are
With the evident compositions there is a 2-category BrOpMon whose objects are braided monoidal categories, whose arrows are braided opmonoidal functors and whose 2-cells are
Our central observation is that model categories are the objects of a double category whose vertical and horizontal ar- rows are left and right Quillen functors, respectively, and
A pointed regular category is subtractive if and only if every span in it is subtractive, and moreover, the functor S not only preserves but also reflects subtractive spans..
If Φ is a small class of weights we can define, as we did for J -Colim, a2-category Φ- Colim of small categories with chosen Φ-colimits, functors preserving these strictly, and
In Section 6 we give a characterization of the locally cartesian closed regular categories D whose associated category of sheaves for the canonical topology (identified in Section 4)
Examines status in school, levels of salary and time devoted to the role as well as the extent to which SENCOs managed other personnel, together with their reports on ways in which
The emphasis on developing competence in problem- solving processes, using action research, is supported by the literature and this is illustrated by several exam- ples of
