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  1. The Galois Approach to Uniform Structures

    The Galois Approach to Uniform Structures

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maria João Ferreira Jorge Picado
    Entourages in uniform spaces, being binary relations, may be easily described by polarities (i.e. Galois connections between power sets) and axialities (i.e. residuated pairs between power sets). Here we consider this in the pointfree context of the category of frames,...
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  2. Morphological and electrophysiological field observations on electric freshwater fish of the genus <em>Mormyrops</em> Müller 1843 (Teleostei: Mormyridae) from West and southern Africa

    Morphological and electrophysiological field observations on electric freshwater fish of the genus Mormyrops Müller 1843 (Teleostei: Mormyridae) from West and southern Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Kramer --- Zoological Institute of the University of Regensburg, Germany
    Different specimens of Mormyrops anguilloides (Linnaeus 1758) were reported to display electric organ discharge (EOD) pulses of either initially head-positive or initially negative polarity, a hypothetical sex difference that has not been substantiated to date. The morphology and EODs of...
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