Vlll CONTENTS 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 Case B: TRam(M) D |Ram(M) = 0 and Ram(M) is dense Covering orders Case C: Fully covered cycle-free partial orders Case D: Partially covered cycle-free partial orders Subcase Dl: The cycle-free partial orders V*'"'" Subcase D2: The cycle-free partial orders £*u u Subcase D3: The cycle-free partial orders T0'^'u Summary Classification of skeletal CFPOs (Part 2) 7.1 7.2 7.3 7.4 7.5 7.6 Introduction The cycle-free partial orders Q^' '" 'd Case 2: The cycle-free partial orders 7{% '" ' An empty case Case 3: The remaining few Conclusions in the skeletal case Sporadic Cycle-free Partial Orders A.l A.2 A.3 Introduction The classification Conclusions 115 118 119 121 123 127 130 132 134 134 135 137 140 141 148 150 150 150 163

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