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Luminosity function of early-type galaxies in cluster cores (as selected by ANN).

We show the possibility to exploit the non-linear behaviour of artiicial neural network (ANN) for the identiication of the early-type component of the population of the core of clusters of galaxies. We result in a measurement of the luminosity function of the E/S0 galaxies which disfavours the hypothesis of a universal LF and calls for dynamical innuences.