If a matrix game is isomorphic to a matrix game with zero game value, then the latter is called annihilation of the former. 摘要如果矩陣對策同構於一個對策值為零的矩陣對策，那麼後者稱為前者的零化。
We may thereby compute the number of graphs which are isomorphic to their complements. 因此我們可以計算同構於其補的圖的數目。
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