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→例子
考虑超图<math>H</math>，它的边为：
考虑超图<math>H</math>，它的边为：
<math>H = \lbrace
::<math>H = \lbrace
e_1 = \lbrace a,b \rbrace,
e_1 = \lbrace a,b \rbrace,
e_2 = \lbrace b,c \rbrace,
e_2 = \lbrace b,c \rbrace,
和超图<math>G</math>：
和超图<math>G</math>：
<math>G = \lbrace
::<math>G = \lbrace
f_1 = \lbrace \alpha,\beta \rbrace,
f_1 = \lbrace \alpha,\beta \rbrace,
f_2 = \lbrace \beta,\gamma \rbrace,
f_2 = \lbrace \beta,\gamma \rbrace,