Expediente, v. 17, n. 34 (2012)

دوره 17، شماره 34. اصل مجله

$n$-cocoherent rings‎, ‎$n$-cosemihereditary rings and $n$-V-rings

 Let $R$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎A right $R$-module $M$ is called $(n‎, ‎d)$-projective if $Ext^{d+1}_R(M‎, ‎A)=0$ for every $n$-copresented right $R$-module $A$‎. ‎$R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $R$-module is $(n‎, ‎d)$-projective‎. ‎$R$...

Rsme - Smm - 2012 17 - 20

PROGRAMA mié18 18:00-18:35 →FELIU SAGOLS, CINVESTAVIPN Sobre la reducibilidad delta-ye. mié18 18:35-19:10 →CAMINO BALBUENA, U. Politècnica Catalunya Partial linear spaces and identifyng codes. mié18 19:20-19:55 →DAVID ROMERO, UNAM-Cuernavaca El problema de asignación con dominancia. mié18 19:55-20:30 →JOSÉ CÁCERES, U. Almería Supergeodeticidad en grafos. jue19 11:30-12:05 →FRANCISCO SANTOS, U. ...

Documenta Mathematica Band 17 , 2012

We derive a combinatorial formula for quantized Donaldson-Thomas invariants of the m-loop quiver. Our main tools are the combinatorics of noncommutative Hilbert schemes and a degenerate version of the Cohomological Hall algebra of this quiver. 2010 Mathematics Subject Classification: Primary 16G20, secondary 05E05, 14N35

2012-05-17-066 Paratuberculosis databases updated (2012-05-18)

Equids are considered highly resistant to mycobacterial infections and clinical cases have been described in domestic horses only. Mycobacterium bovis is the most common species reported, although a single report exists of disease due to definitively diagnosed infection with Mycobacterium avium subsp. hominissuis in two domestic horses. This is the first report of a mycobacterial infection in a...