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Fig. 4.


Illustration of the steps of the GFiF algorithm. In the first box (top-left) one can see the distribution of galaxies. In the second one (top-right) the HC groups are marked, with denser red colors representing the richer HC groups. The filtered edges (links) among the groups of the spanning tree are displayed in the third box (bottom-left). The last box (bottom-right) presents the systems (green circles), bridges (brown lines), and other links (blue lines) found among the groups of the preceding step.

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