in Fig. 5.59 are lattices. +X+ b (b) Fig. 5.59 C (a) do d Determine whether the posets represented by the Hasse diagrams given in Fig. 5.60 are lattices. (a) posets represented b d. 03 9 (b) f do b Fig. 5.60 (c) (c) do b (d)

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