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This is a survey on complexity issues of subgraph problems proved in a systematic way. We deal with vertex-deletion and edge-deletion problems which can be viewed as subgraph problems. General NP-comp...leteness theorems are presernted for these problems. We also present a systematized result which shoaws polynomial time algorithms for these problems restricted to series-parallel graphs. Another problem we consider in this paper is the lelxicographically first maximal subgraph problems which appear in connection with parallel complexity theory.続きを見る
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