伊藤 誠

With the help of a graph-theoretical approach, we have quantified two-dimensional galaxy distributions in observation and Cold Dark Matter (CDM) simulations. In our analysis, we adopted the Lyon-Meudon Extragalactic Database as a typical two-dimen...

We use a graph theory for quantifying galaxy distributions in the cold dark matter (CDM) universe. Cosmological N-body simulations with CDM spectra are performed, and a constellation graph is constructed from these simulations. We apply graph theo...

We propose a graph-theoretical approach for quantifying the galaxy distributions in the universe. In order to examine the validity of this approach, we construct graphs based on our cosmological N-body simulations with scale-free power-lay spectra...