Gentle and Todorov proved that in an abelian category with enough projective objects, the extension subcategory of two covariantly finite subcategories is covariantly finite. We give an example to show that Gentle–Todorov’s theorem may fail in an arbitrary abelian category; however we prove a triangulated version of Gentle–Todorov’s theorem which holds for arbitrary triangulated categories; we ...

Salbany, S. and T. Todorov, Nonstandard and standard cornpactifications of ordered topological spaces, Topology and its Applications 47 (1992) 35-52. We construct the Nachbin ordered compactification and the ordered realcornpactification, a notion defined in the paper, of a given ordered topological space as nonstandard ordered hulls. The maximal ideals in the algebras of the differences of mon...

Using techniques from TRO equivalence of masa bimodules we prove various transference results: We show that when $$\alpha $$ is a group homomorphism which pushes forward the Haar measure G to absolutely continuous with respect on H, then $$(\alpha \times \alpha )^{-1}$$ preserves sets compact operator synthesis, and conversely onto. also similar preservation results for Ditkin M-sets, obtaining...

Invariance under finite conformal transformations in Minkowski space and the Wightman axioms imply strong locality (Huygens principle) and rationality of correlation functions, thus providing an extension of the concept of vertex algebra to higher dimensions. Gibbs (finite temperature) expectation values appear as elliptic functions in the conformal time. We survey and further pursue our progra...

1. Credner SC, Klingenheben T, Mauss O, Sticherling C, Hohnloser SH. Electrical storm in patients with transvenous implantable cardioverterdefibrillators. J Am Coll Cardiol 1998;32:1909–15. 2. Dorian P, Cass D. An overview of the management of electrical storm. Can J Cardiol 1997;13:13A–7A. 3. Wood MA, Simpson PM, Stambler BS, Herre JM, Bernstein RC, Ellenbogen KA. Long-term temporal patterns o...

N. T. Maitra,1,* T. N. Todorov,2 C. Woodward,3 and K. Burke4 1Department of Physics and Astronomy, Hunter College and the Graduate Center of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 2School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom 3Department of Mathematics, Hill Center, Rutgers, the State University of New Je...

Este artigo discute as relações entre a história e literatura, por meio do resgate de formas literárias passado, especialmente o maravilhoso. Analisa, também, papel maravilhoso enquanto gênero na pós-modernidade, questionando se ele estaria, ainda, próximo conceito estabelecido Todorov ou forma como configura atualmente nas narrativas contemporâneas subverteria gênero. Para tanto, analisaremos ...