In this paper we summarize some fundamental results on left-continuous t-norms. First we study the nilpotent minimum and related operations in considerable details. This is the very first example of a left-continuous but not continuous t-norm in the literature. Then we recall some recent extensions and construction methods.

J. R. Vázquez de Aldana, N. J. Kylstra, L. Roso, P. L. Knight, A. Patel, and R. A. Worthington Departamento de Fı́sica Aplicada, Universidad de Salamanca, E-37008 Salamanca, Spain Department of Physics, Science Laboratories, University of Durham, Durham DH1 3LE, United Kingdom Optics Section, Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom ~Received 20 December 2000; publis...

Diurnal human activity and domestic dogs in agro-forestry mosaics should theoretically modify the diurnal habitat use patterns of native carnivores, with these effects being scale-dependent. We combined intensive camera trapping data with Bayesian occurrence probability models to evaluate both diurnal and nocturnal patterns of space use by carnivores in a mosaic of land-use types in southern Ch...

Macroinvertebrate populations from constructed and natural vernal pools on the same land forms and in close proximity, were compared quantitatively to determine colonization and temporal trends. Population trends in the natural pools were used to establish the functional success criteria for constructed pools. Success was evaluated by the quantitative and qualitative similarities of the constru...