连续五天了，李默都窝在图书馆的小角落里撰写着四色猜想的论文。他现在才发现，用外语写一篇论文是多么的困难。
用词的专业度，引用的定理表述的规范性。他曾以为词汇是最困难的。实际上写论文时才发现，词汇不是最困难的，真正麻烦事是用外语表达的逻辑。
在查阅无数文献，绞尽脑汁之后李默终于把论文完整的写了出来。
We can convert the four color conjecture，
At the same time， we call the number of points of the largest complete graph subgraph included in Figure F as “clique number“， and note it as X. It is easy to find that a complete graph of n points requires at least n different colors because the two points are adjacent.
.........
It is obvious from the above that any part of a graph is divided and dyed to make any part with common sidelines have different colors， and can only use four colors， no more. The proposition is true.
I have finished the certificate.
看着自己写的论文，李默就像看到自己的孩子一样，他觉得满意极了。
李默想起了魏小年的话，他掏出手机拨通了吴教授的电话：“吴教授，你好，我是李默，我最近完成了一篇论文。准备投稿，想先让你把把关。”
“论文？好，好，我下午有空，这样吧，下午两点你来我办公室。”吴教授一边接过助理递过的文件一边回答道。
旁边穿职业套筒裙的女助理看到教授放下了电话，小声提示道：“吴老，您下午和大方集团的张总有个会面，你看是不是...”
…。。