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  • 1
    Electronic Resource
    Electronic Resource
    On the Monodromy at Infinity of a Polynomial Map, II (1999)
    Springer
    Compositio mathematica 115 (1999), S. 1-20 
    Details
    ISSN: 1570-5846
    Keywords: monodromy at infinity ; polynomial maps ; projective hypersurfaces ; defect of linear systems.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract To a polynomial map f : Cn + 1 → C one can attach a monodromy transformation on the complex cohomology of its generic fiber that reflects its asymptotic behaviour. In this paper this transformation is determined for a class of generic polynomials in terms of data attached to projective hypersurfaces with isolated singularities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1000544925377
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  • 2
    Electronic Resource
    Electronic Resource
    Chromospheric variability in late-type dwarfs from high-resolution spectra of Caii H (1990)
    Springer
    Astrophysics and space science 170 (1990), S. 109-111 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present an analysis of high-resolution (λ/δλ≈8×104) high signal-to-noise-ratio spectra of late-type chromospherically active dwarfs in Caii H (λ3968.47 Å), obtained with the Coudé Auxiliary Telescope plus the Coudé Echelle Spectrometer at ESO, La Silla. Observational parameters employed are the total emission flux attributable to the chromosphere, the asymmetry of the emission component and its bisector, the ratio of the intensities of the blue and red H2 emission peaks, and the absolute wavelengths of the H3 minimum and the mean emission feature. Given time-spaced sets of spectra for each object, which are as yet relatively sparse, we explore the potential use of these observational parameters to deepen our understanding of the chromospheric activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652654
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