نتایج جستجو برای: φ injectivity

تعداد نتایج: 17960  

Journal: :Glasgow Mathematical Journal 2009

Journal: :Proceedings of the American Mathematical Society 2008

Journal: :Discrete Applied Mathematics 2013

Journal: :Canadian Mathematical Bulletin 2017

In this paper‎, ‎we introduce the notion of $(m,n)$-‎algebr‎aically compact modules as an analogue of algebraically‎ ‎compact modules and then we show that $(m,n)$-algebraically‎ ‎compactness‎ ‎and $(m,n)$-pure injectivity for modules coincide‎. ‎Moreover‎, ‎further characterizations of a‎ ‎$(m,n)$-pure injective module over a commutative ring are given‎.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Max Forester Colin Rourke

We prove injectivity and relative asphericity for "layered" systems of equations over torsion-free groups, when the exponent matrix is invertible over Z.

Journal: :Annales Polonici Mathematici 1959

2008
Anton Petrunin

In my talk I will discuss the following results which were obtained in joint work with Wilderich Tuschmann. 1. For any given numbers m, C and D, the class of m-dimensional simply connected closed smooth manifolds with finite second homotopy groups which admit a Riemannian metric with sectional curvature |K| ≤ C and diameter ≤ D contains only finitely many diffeomorphism types. 2. Given any m an...

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