Duncan and Ihrig (1993) gave a classification of the flat homogeneous spaces of metric signature (m, 2), provided that a certain condition on the development image of these spaces holds. In this note we show that this condition can be dropped, so that Duncan and Ihrig’s classification is in fact the full classification for signature (m, 2).

Duncan and Ihrig (1993) gave a classification of the flat homogeneous spaces of metric signature (m, 2), provided that a certain condition on the development image of these spaces holds. In this note we show that this condition can be dropped, so that Duncan and Ihrig’s classification is in fact the full classification for signature (m, 2).

Abstract Ronan Point was a residential tower block that partially collapsed in Newham 1968, provoking nationwide scandal. The disaster is frequently cited as symbolic ‘turning point’ the urban history of Britain, but it has been surprisingly underexplored on an archival level. It identified moment at which high-rise architecture overwhelmingly discredited: defining event within narratives ‘urba...

Abstract Between 1899 and 1907, the medium Rosalie Thompson—giving voice to her dead daughter, Nelly—participated in a number of experimental seances with Society for Psychical Research (SPR), which were formative development society’s theories telepathy, personality survival. Using extensive séance notes taken by researchers, range published materials related case, this article situates psychi...