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Search Results: 1 - 10 of 5974 matches for " ALFREDO GANTZ "
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Complicaciones apendiculares
ALFREDO GANTZ
Revista chilena de pediatría , 1948,
Abstract:
La epidemia de influenza (Gripe Asiática) de 1957 y la patología prenatal
ALFREDO WIEDERHOLD,ALFREDO GANTZ
Revista chilena de pediatría , 1959,
Abstract:
Las osteomielitis agudas en el ni o y su tratamiento con penicilina
ALFREDO GANTZ M
Revista chilena de pediatría , 1946,
Abstract:
Consideraciones sobre el prolapso rectal en el ni o
HUMBERTO GARCES CUADRA,ALFREDO GANTZ
Revista chilena de pediatría , 1947,
Abstract:
Tumor de Willms bilateral
ALFREDO GANTZ,MANUEL NEIRA,HELMUTH SCHULTZ
Revista chilena de pediatría , 1960,
Abstract:
Poliposis intestinal generalizada
ALFREDO GANTZ,RAIMUNDO ARIZTIA,ALBERTO GUZMAN
Revista chilena de pediatría , 1951,
Abstract:
Consideraciones clínicas sobre 59 casos de cardiopatías congénitas operadas
ARNULFO JOHOW,ALFREDO GANTZ,LUIS BARTTLET,ALFREDO CIFUENTES
Revista chilena de pediatría , 1954,
Abstract:
Gauge fixing for logarithmic connections over curves and the Riemann-Hilbert-Problem
Christian Gantz,Brian Steer
Mathematics , 1995,
Abstract: We explain in detail the correspondence between algebraic connections over CP^{1}, logarithmic at X = { x_{1},...,x_{n} } \subset CP^{1}, and flat bundles over CP^{1}-X with integer weighted filtrations near each x_{j}. Included is a gauge fixing theorem for logarithmic connections. (Thus far, one could work over any Riemann surface.) We prove a bound on the splitting type of a semi-stable logarithmic connection over CP^{1}. Using this we extend and simplify some results on the Riemann-Hilbert-Problem, which asks for a logarithmic connection on a holomorphically trivial bundle over CP^{1}, extending a given flat bundle over CP^{1}-X. The work is self contained and elementary, using only basic knowledge of Gauge Theory and the Birkhoff-Grothendieck-Theorem.
Stable Parabolic Bundles over Elliptic Surfaces and over Orbifold Riemann Surfaces
Christian Gantz,Brian Steer
Mathematics , 1995,
Abstract: For an elliptic surface $q:Y \to \Sigma$, with prescribed singular fibres, Stefan Bauer proved directly via algebraic geometry that the stable bundles over $Y$, whose chern classes are pull backs from $\Sigma$, correspond to the stable (V-)bundles over $\Sigma$. We show, via a short proof in differential geometry, a generalisation to stable parabolic bundles. This uses extensions of Donaldson's deep result, giving the existence of Hermitian-Yang-Mills (or anti-self-dual) connections on stable parabolic bundles. In our cases these connections are flat and hence, correspond to representations of certain fundamental groups, which in turn are isomorphic, by Ue's work. To generalize Bauer's equivalence of the corresponding moduli spaces of stable bundles, we combine his arguments with Kronheimer & Mrowka's construction of the moduli spaces of stable parabolic bundles. Finally, we consider the pulling back of smooth parabolic bundles via $q$.
ENSAMBLES DE AVES EN EL DESIERTO DE ATACAMA, NORTE GRANDE DE CHILE
Gantz,Alberto; Rau,Jaime; Couve,Enrique;
Gayana (Concepción) , 2009, DOI: 10.4067/S0717-65382009000200002
Abstract: the richness and composition of bird species in the atacama desert located in the far north of chile, was studied between 1996 and 1998. using lineal transects, the richness of bird species was evaluated in nine locations of the atacama desert, grouped into four ecological zones: coastal desert, inland desert, marginal tropical, and altitude tropical. bird species richness totaled 80 species, belonging to 51 genera and 26 families. total richness corresponded to 52% of historical descriptions of birdlife in the chilean far north desert. the ecological zones of the coastal and altitude tropical desert areas each have unique bird fauna elements. insectivorous birds predominated over other trophic groups (40% of total species). the predominance of different trophic groups appears to depend on the type of feeding habitat used. our results suggest that the variety of bird species in the chilean atacama desert is determined by habitat heterogeneity and the immigration of species from zones, adjacent to the atacama desert.
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