Chapter 348

If it is proved, everything is easy to say, but if it can't be proved, then Qin Luo's reputation will be completely cool, and even carry a high-profile curse.

Ambitious? The road to death?

Hearing Ye Fu's words, ye Liang nodded deeply.

Qin Luo is killing himself.

Qin Luo didn't hear the laughter of Ye's father and son, but even if he did, Qin Luo would only laugh.

As a systematic Xueba, he really can't see Ye's father and son.

Even after ye Liang made a wonderful report on topological functions, it is the same.

Qin Luo wrote very slowly, every word and every word was carefully written, but with the passage of time, there were more and more formulas on the whiteboard.

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

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

“3.……”

Five minutes, ten minutes, half an hour

As time went by, there was no sound of noisy discussion, no sound of talking, and no breath in the end. The whole lecture hall fell into a dead silence.

"With pen and paper?" When Qin Luo's formula occupied more than half of the white board, Wang Xuecai turned to look at the assistant behind him.

The teaching assistant is a graduate student, about twenty-four or five years old. When he heard Wang Xuecai's words, he always took out his briefcase and handed it to Wang Xuecai at the first time.

"Give me one, too." Song Baoguo suddenly opened his mouth.

"And me." Next second, Zhou Haizhong is not willing to be outdone.

The teaching assistant took a puff and emptied his briefcase in silence.

"Thank you."

Wang Xuecai nodded with a smile and took the pen and paper on his knee. His eyes gradually became serious.

But after a moment, his brow gradually frowned.

As one of the leading figures in the Chinese mathematics field, he can be regarded as one of the farthest people in the Chinese mathematics field. He can see problems more clearly than others.

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

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

However, countless examples have proved that the four color conjecture may not be suitable for the screening method.

What on earth does he want to do? The wrinkles between Wang Xuecai's eyebrows grew deeper and deeper. He unscrewed his pen cap and began to check it in his book.

The father and son of Ye's family, sitting in the corner on the other side, did not have the slightest sadness on their faces, on the contrary, they were smiling.

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

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

Looking at the process of Qin Luo's argument, ye Liang's mouth is hooked up.

"Sieve method!"

What does he want to do?

Not only is he thinking about this problem, but ye Kang is also thinking about it.

Screening method is a common demonstration method in the process of mathematical argumentation.

But this method of mathematical proof is only applicable to some specific conjectures.

The four color conjecture is not included.

The reason is also very simple. There are too many possibilities for the four color conjecture to be screened out.