Chapter 348 Sieve Method

If it is proved, then everything is easy to say, but if it cannot be proved, then Qin Luo's reputation will be completely cold, and he will even bear a very lofty infamy.

Too ambitious? Suicide?

Hearing Father Ye's words, Ye Liang nodded in agreement.

Qin Luo is killing himself.

Qin Luo didn't hear the sneering of the Ye family's father and son, but even if he heard it, Qin Luo would only smile.

As a scholar with a system, he really couldn't take the Ye family's father and son in his eyes.

This was the same even after Ye Liang made a wonderful report on topological functions.

Qin Luo writes very slowly, every word, every word is written carefully, but as time goes by, there are more and more formulas on the whiteboard.

"1. If D cannot be adjacent to ABC at the same time, the number of colors will not increase. If D cannot be adjacent to C, then DC uses one color..."

"2. If D is adjacent to ABC at the same time, on the plane, then D must be in the center or periphery of the adjacent graph of ABC..."

"3...."

Five minutes, ten minutes, half an hour...

As time passed, the slowly noisy discussions disappeared, the slowly hearty voices disappeared, and in the end there was not even a breath, and the entire lecture hall fell into a dead silence.

"Have you brought a pen and paper?" When Qin Luo's formula took up more than half of the whiteboard, Wang Xuecai turned his head to look at the teaching assistant behind him.

The teaching assistant is a graduate student, about twenty-four or five years old. After he heard Wang Xuecai's words, he took out the pen and paper from the briefcase he carried with him immediately and handed it to Wang Xuecai.

"Give me one too." Song Baoguo said suddenly.

"And me." In the next second, Zhou Haizhong was not to be outdone.

The teaching assistant's mouth twitched, and he silently emptied his briefcase.

"thanks."

Wang Xuecai nodded with a smile, took the pen and paper and put it on his knees, his eyes gradually became serious.

But after a while, his brows gradually wrinkled.

As one of the leading figures in the Chinese mathematics community, he can be regarded as one of the people who have traveled farthest in the Chinese mathematics community. He sees problems more clearly than others.

The method Qin Luo uses is slightly different from the conventional method. He uses the sieve method!

Sift out all the impossible, and the rest is the answer!

However, countless examples have proved that the four-color conjecture may not be suitable for sieve argument.

What is he trying to do? The wrinkles between Wang Xuecai's brows were getting deeper and deeper.

On the other side, the father and son of the Ye family sitting in the corner did not have any worries on their faces, instead they had smiles on their faces.

Like Wang Xuecai, they are also outstanding in the field of mathematics. Among them, Ye Liang is a professor of mathematics at Johns Hopkins University, which is enough to show his extraordinary ability.

Therefore, Wang Xuecai can understand Qin Luo's argument, and he can understand it too.

Looking at Qin Luo's argumentation process that filled the whiteboard, the corners of Ye Liang's mouth twitched.

"Sifter!"

What does he want to do?

Not only is he thinking about this, Ye Kang is also thinking about it.

Sieve method is a common method of argumentation in the process of mathematical argumentation.

But this mathematical argument method is only suitable for some specific conjectures.

However, the four-color conjecture is not included here.

The reason is also very simple. There are too many possibilities for the four-color conjecture, and it is impossible to sift through them.