It has been conjectured that if G is a negatively curved discrete group with space at infinity ∂G the 2 -sphere, then G has a properly discontinuous, cocompact, isometric action on hyperbolic 3 -space. Cannon and Swenson reduced the conjecture to determining that a certain sequence of coverings of ∂G is conformal in the sense of Cannon’s combinatorial Riemann mapping theorem. In this paper it i...

Two new species of Xestoblatta from northern Brazil are described, Xestoblatta buhrnheimi sp. n. and Xestoblatta rondonensis sp. n., included in the buscki group Gurney (1939), and new characters are added to the description of Xestoblatta mamorensis Lopes & Oliveira, 2006. Xestoblatta roppai Rocha e Albuquerque-Silva & Fraga, 1975, from midwestern Brazil is redescribed, including its genital c...

Résumé Le rapport qu'a entretenu G. W. F. Hegel avec la pensée de H. Jacobi a été constant. Il s'attarde avant tout à question du savoir, vérité et sa saisie, immédiate ou médiatisée. Or, l'un des concepts centraux Jacobi, sur lequel se fonde en un sens conception savoir immédiat, est celui perception entendue comme saisie vrai ( Wahr-nehmen ). C'est partant ce concept, largement discuté au cha...

[1] We use 22 monthly GRACE (Gravity Recovery and Climate Experiment) gravity fields to estimate the linear trend in Greenland ice mass during 2002–2004. We recover a decrease in total ice mass of 82 ± 28 km of ice per year, consistent with estimates from other techniques. Our uncertainty estimate is dominated by the effects of GRACE measurement errors and errors in our post glacial rebound (PG...

percutaneous coronary and carotid interventions. Curr Control Trials Cardiovasc Med 2001; 2: 286–291 11. Angelini A, Reimers B et al. Cerebral protection during carotid artery stenting. Stroke 2002; 33: 456–461 12. Webb JG, Carere RGC, Virmani R et al. Retrieval and analysis of particulate debris after saphenous vein graft intervention. J Am Col Cardiol 1999; 34: 468–475 13. Baim DS, Wahr D, Ge...

Zusammenfassung. Die traditionelle Auswertung einer Datenbankanfrage ermittelt für jedes Tupel entweder den Wahrheitswert Wahr oder Falsch. Für viele Anwendungsszenarien ist diese Auswertungssemantik zu restriktiv, insbesondere wenn ein differenzierteres Anfrageergebnis benötigt wird. Ein etablierter probabilistischer Ansatz zum Erreichen dieser Ausdifferenzierung ist die Verwendung sogenannter...