"Huh. Zhang Shouwu found this person first, and couldn't help but sigh lightly.

The man looked at Zhang Shouwu with a smile on his face.

Zhang Shouwu then asked, "Didn't you say you wouldn't come?"

The man replied, "Didn't you find something interesting?" ”

After speaking, his eyes looked at Chen Zhou, who was looking at him.

Chen Zhou thought about it carefully, this person was indeed the first time he had seen him, and he didn't know him.

But the other party obviously knows himself.

Seeing Chen Zhou's puzzled eyes, Zhang Shouwu introduced: "This is Professor Zhang Yitang who collided with your research field. ”

Chen Zhou suddenly realized that this can be said to be a "sweeping monk" in the mathematical world.

The so-called non-sound is enough, and it is a blockbuster.

refers to people like Zhang Yitang.

Until 2013, the mathematician, who was in his sixties, worked as a lecturer at a lesser-known university.

Yes, it's a lecturer, not a professor.

And he has barely published professional papers on mathematics.

However, since 2013, in just two years, Zhang Yitang's name has been "born" in the international mathematical community.

He has successively won the "Kohl Number Theory Prize of the Mathematical Society" in the United States and the 2014 Rof Schock Award in Sweden.

Zhang Yitang was invited to give an invited one-hour talk before the closing ceremony of the 2014 International Congress of Mathematicians!

Invited presentations at the International Congress of Mathematics are usually 45 minutes, but his is an hour!

The problem that Zhang Yitang studied was the interval of prime numbers.

In 2013, he published a landmark paper on the study of prime numbers, proposing for the first time that there are infinite pairs of primes, with a certain interval between them.

And, he proved that the interval was within 70 million.

This is also a weakened form of the twin prime conjecture.

As a result, Zhang Yitang became a key figure in cracking one of the famous conjectures in this mathematical field, the twin prime conjecture.

Because of his work, it is equivalent to the Norwegian Brown in 1920 who proved "9+9" and "opened" the proof of Goldbach's conjecture.

Now, from 70 million to 60 million, to 42 million, 13 million, 5 million, 400,000......

Using Zhang Yitang's method, mathematicians have reduced this constant to 246!

Getting closer and closer to the range of the twin prime conjecture.

If this constant is improved to 2, it is equivalent to proving the twin prime conjecture!

I have to say, this is a very good mathematician.

Thinking of this, Chen Zhou also understood the other party's intention to come over, and he politely introduced himself: "Hello Professor Zhang, I am a student of Yenching University, Chen Zhou. ”

Zhang Yitang looked at Chen Zhou and said, "I know you, I have already read your paper." ”

After a pause, he added: "Whether it is the proof of the hail conjecture or the extension of the Kramel conjecture, it is very exciting!"

Chen Zhou smiled modestly and said, "Your research on the twin prime conjecture is also wonderful! It has opened the door for mathematicians to prove the twin prime conjecture!"

Zhang Yitang waved his hand and said calmly: "It just provides a research method, and it is still far from proof." Just like Goldbach's conjecture, after being pushed to '1+2', it is never possible to take the final step. ”

Zhang Shouwu looked at the expressions of the two from the side, and suddenly interjected: "Okay, don't be humble for the two of you, there are no outsiders ...... this."

Hearing this, Chen Zhou and Zhang Yitang looked at each other and smiled.

However, Zhang Yitang is indeed a low-key mathematician.

Otherwise, there would not have been decades of non-publication of mathematical papers, so much so that the mathematical community would have forgotten the existence of this man.

Until Professor Zhang Yitang, he did a big vote.

At this time, the presenters on the stage had also finished their own report meetings.

In the QA section, he was hardly troubled.

politely gave himself a round of applause, Chen Zhou thought that if it was the last day, his report would be like this, it would be quite good.

"Let's go, let's find a place to talk?" Zhang Shouwu suggested.

Chen Zhou and Zhang Yitang naturally have no opinions, and the other party has their own things they want to know.

Chen Zhou and the three of them immediately found a nearby café after the auditorium.

The waiter warmly entertained the three of them.

Zhang Shouwu didn't treat the waiter's enthusiasm either, and gave a tip.

Chen Zhou looked at the tip in the tray, and his eyelids jumped.

At this time, Zhang Yitang's voice pulled back Chen Zhou's thoughts.

"Chen Zhou, can you tell me about your distribution deconstruction method?"

Perhaps feeling that his question was a bit abrupt, Zhang Yitang took out a notebook from his bag, opened it, and asked, "About the derivation of Equation 5-3 and Equation 9-6 in your paper." ”

Chen Zhou thought about it for a moment and said, "Is it convenient to give me a pen and paper?"

Zhang Yitang immediately took out a stack of brand-new A4 paper from his bag, and then handed the pen to Chen Zhou.

Chen Zhou took the pen and paper and began to say: "About Equation 5-3, it is like this......"

As he spoke, he wrote the derived formula on scratch paper.

Zhang Yitang and Zhang Shouwu, the two old men, listened attentively to Chen Zhou's narration.

The previous waiter couldn't help but take a curious look, and suddenly felt a big head.

These Chinese people don't drink coffee when it's cold, but they are writing a bunch of incomprehensible symbols.

It's incomprehensible!

“...... From this, the conclusion of Eq. 5-3 can be drawn. Chen Zhou stopped his pen and handed the scratch paper to Zhang Yitang, "Take a look." ”

Zhang Yitang took the scratch paper and read it carefully word by word.

At the end, he handed the scratch paper to Zhang Shouwu, and looked at Chen Zhou with bright eyes: "What about formula 9-6?"

Chen Zhou smiled, and the pen in his hand re-wrote on the scratch paper.

"Actually, Equation 9-6 uses a technique, I believe Professor Zhang, you must be familiar with it!"

As Chen Zhou narrated, Zhang Yitang's eyes gradually increased, which ......

This is similar to the work of correcting Bombieri-Friedlander-Iwaniec himself.

But he was able to make these innovations based on decades of research.

But Chen Zhou is only a sophomore undergraduate student now, how can he have such a rich accumulation?

Even if he doesn't sleep, he can't read so much literature, right?

What's more, reading the literature is not just about reading.

Zhang Yitang looked at Chen Zhou, who was writing and talking in front of him, and couldn't help but feel a lot of emotion in his heart.

Maybe that's a talent for math, right?

“...... Thus, Eq. 9-6 can be derived from Eq. 9-3, Eq. 9-4, and Eq. 9-5. ”

After Chen Zhou finished speaking, he slowly put down the pen and handed the scratch paper to Zhang Yitang.

Chen Zhou looked at each other with a smile: "Is there some familiarity?"

After reading it, Zhang Yitang finally said the emotion in his heart: "I didn't expect you to be so young in grade and have such a high understanding of prime numbers......"

Zhang Shouwu also said: "Chen Zhou, you, beyond my imagination!"

If you look at the paper alone, you can only see the results of Chen Zhou's work.

But after Chen Zhou said this, the thoughts in it made them even more emotional.

Chen Zhou said a little embarrassedly: "Two Professor Zhang, you have won the award. ”

"That, Chen Zhou, these two pieces of paper?" Zhang Yitang noticed that Zhang Shouwu was obviously clenching the scratch paper in his hand.

"Oh, I'll give it to you. Chen Zhou also noticed Zhang Shouwu's small movements, and only thought that this old man in his fifties was quite interesting.

When Zhang Shouwu heard Chen Zhou's words, he immediately looked at Zhang Yitang: "Old Zhang, borrow me first!"

As he spoke, he clenched his hands tighter.

Zhang Yitang was also a little crying and laughing, and waved his hand: "Remember to return it to me after reading it." ”

Zhang Shouwu immediately said that there was no problem.

Subsequently, Chen Zhou and Zhang Yitang discussed some research ideas on the prime interval problem.