Let T be a right exact functor from an abelian category ℬ into another $${\mathscr A}$$ . Then there exists p the product A} \times {\mathscr B}$$ to comma ( $$\left( {T \downarrow A}} \right)$$ ). In this paper, we study property of extension closure some classes objects in ), exactness and detailed description orthogonal given class $${\rm{P}}\left( {{\cal X},{\cal Y}} Moreover, characterize ...

In this paper the use of graph isomorphism is investigated within the framework of symmetry breaking in constraint satisfaction problems. A running example of Comma-free codes is used to test the methods. But the technique can be extended to other problems. In particular Symmetry Breaking via Dominance Detection (SBDD) is applied to find Comma-Free Codes. To check if a current partial solution ...

Growth of the mouse mammary epithelial cell line designated COMMA-D has been studied in serum-free medium (SFM) formulated with Ham's F12 and Dulbecco's modified Eagle's medium (1/1) containing 15 mM 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid, 2 mM glutamine, gentamicin (50 micrograms/ml; basal medium) and supplemented with insulin (10 micrograms/ml), transferrin (10 micrograms/ml), sel...

While the field of grammatical error detection has progressed over the past few years, one area of particular difficulty for both native and non-native learners of English, comma placement, has been largely ignored. We present a system for comma error correction in English that achieves an average of 89% precision and 25% recall on two corpora of unedited student essays. This system also achiev...

Commas and the surrounding sentence structure often express relations that are essential to understanding the meaning of the sentence. This paper proposes a set of relations commas participate in, expanding on previous work in this area, and develops a new dataset annotated with this set of labels. We identify features that are important to achieve a good performance on comma labeling and then ...