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Published online by Cambridge University Press: 30 March 2016
The test of the world geometry with the number count of galaxies is one of the most classical subjects. Yet it is only quite recent that observations started to yield useful information on the world geometry (Tyson 1988). We have been studying this cosmology test over the last few years (Fukugita et al. 1990; see also Yoshii and Takahara 1988), recently with more emphasis given to galaxy evolution and selection effects of the observation. In this talk we summarise the main result from our study (Fukugita et al. 1991; Yoshii and Fukugita 1991b).