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例 例 deg(v1)=3,deg+(v1)=2,deg(v1)=1; o4 deg(v)=3, degt(v,)=2, deg (v)=1; ⅴ5 deg(v3)=5, deg(v3)=2, deg"(v3)=3; deg(v)=deg*( v4)=deg (V4)=0 deg(v5)=1,deg+(v5)=0,deg(v5)=1 Guoyongfang.2006@yahoo.com.cnGuoyongfang.2006@yahoo.com.cn 例: deg(v1 )=3,deg+(v1 )=2,deg-(v1 )=1; deg(v2 )=3,deg+(v2 )=2,deg-(v2 )=1; deg(v3 )=5,deg+(v3 )=2,deg-(v3 )=3; deg(v4 )=deg+(v4 )=deg-(v4 )=0; deg(v5 )=1,deg+(v5 )=0,deg-(v5 )=1; 例:
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