We prove that the category of flows cannot be the underlying category of a model category whose corresponding homotopy types are the flows up to weak dihomotopy. Some hints are given to overcome this problem. In particular, a new approach of dihomotopy involving simplicial presheaves over an appropriate small category is proposed. This small category is obtained by taking a full subcategory of ...

Two experiments explore the effects of mood on category learning. In the first experiment subjects were put into either a negative or a neutral mood before completing one of two category-learning tasks. Negative mood briefly impaired rulebased category learning but this impairment did not persist throughout the task. Negative mood did not influence nonrule-based learning. In a second study subj...

We study the question of the validity of the Snake Lemma in a P-semi-abelian category. We also obtain a generalization of the Snake Lemma in a quasi-abelian category. Mathematics Subject Classification: 18A20, 18E05.

Two different definitions of a chain theory K∗ lead to the same class of derived homology theories h∗( ). On the category of CW pairs, these are those homology theories E∗ admitting a classifying simplicial abelian group spectrum E. So one has a functor from the category of chain theories into the category of simplicial abelian group spectra. 2000 Mathematics Subject Classification: 55U15, 55U1...

In this paper, the category of L-FINT is topological category over Set. We investigate the functorial relations between L-FTOP and LFINT where L is a strictly two-sided, commutative quantale lattice. Mathematics Subject Classification: 03E72, 54A40, 54B10

Citation: Rahman AIMJ, Guns R, Rousseau R and Engels TCE (2017) Cognitive Distances between Evaluators and Evaluees in Research Evaluation: A Comparison between Three Informetric Methods at the Journal and Subject Category Aggregation Level. Front. Res. Metr. Anal. 2:6. doi: 10.3389/frma.2017.00006 cognitive Distances between evaluators and evaluees in research evaluation: a comparison between ...

in this article, we have shown, for the add-point monad t, thepartial morphism category set*is isomorphic to the kleisli category sett. alsowe have proved that the category, sett, of t-algebras is isomorphic to thecategory set of pointed sets. finally we have established commutative squaresinvolving these categories.