Since ∑ d over vertices of even degree and 2e are both even numbers什么意思
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Since∑doververticesofevendegreeand2earebothevennumbers什么意思Since∑doververticesofevendegreeand2earebot
Since ∑ d over vertices of even degree and 2e are both even numbers什么意思
Since ∑ d over vertices of even degree and 2e are both even numbers什么意思
Since ∑ d over vertices of even degree and 2e are both even numbers什么意思
因为偶数度数的顶点和2倍偶数的度数的累加
二者都是偶数.
d是degree的缩写,e是 even的缩写.
Since ∑ d over vertices of even degree and 2e are both even numbers什么意思
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