Chapter 327

There are not a few students who choose to stay at Tsinghua University during the summer vacation.

After all, summer vacation is not like winter vacation, which has a day like the Spring Festival when you have to rush home to reunite, and staying in school can have an excellent learning atmosphere.

In the less than two months of summer vacation, Cheng Nuo was as busy as in the previous months, but it was difficult to say how many free days he had.

Proof of cross-university cooperation and exchange projects and weak BSD conjectures.

These two things occupy almost 70% of Cheng Nuo's time every day in addition to eating and sleeping, so he can only play a few games of kings, eat chicken, and relax.

Everything is going on in this way.

............

Summer is scorching. Kyoto in the summer is really not a place for people.

Cheng Nuo, who was supposed to stay at the beach at this time, blowing the cool sea breeze, walked into the innovation practice base of Peking University under the sun, holding a bottle of cold drink in one hand and wiping the sweat dripping from his forehead with the other.

In the office specially assigned to Cheng Nuo, the four members of the research group were there.

"Cheng Nuo, you can be regarded as here, I thought you were suffering from heat stroke halfway!" Sheng Fei stepped forward with a smile.

"We're pretty good here in Kyoto, if you go to Jinling to feel it, it will definitely be hot and make you doubt the eternity of life. Yang Xiao also came over to interject.

After half a month of running-in period, the five of them became familiar with each other.

The attitude of several people towards Cheng Nuo is not the contempt at the beginning, but the attitude of equality with themselves, or...... Higher!

Judging from Cheng Nuo's surprising performance during this time, Cheng Nuo's image in their minds is elevated.

What's more, Cheng Nuo is now less than twenty years old!

Future achievements are unpredictable!

Even the Wei Jun, who had some disagreements with Cheng Nuo before, had to say the word "convinced" to Cheng Nuo at this age.

"I heard that Sister Yi Ge is in some trouble, so I'll come over and take a look. Cheng Nuo asked while taking the wet wipes handed over by Sheng Fei.

Originally, in the past few days, there was no research work by Cheng Nuo in the research plan of the research group. No, I heard that Senior Sister Yi Ge had some problems with the subject, and Cheng Nuo, who had just bought a watermelon in the dormitory to relieve the heat, was urgently summoned here.

Sister Yi Ge walked out a little embarrassed at this time, stood in front of Cheng Nuo, her tone was soft and weak, and she said apologetically, "Cheng Nuo, I'm sorry, it's so hot, let me come over." ”

"Sister Yige, it's okay. Cheng Nuo smiled, "It's not far, it's just a matter of a few steps." ”

"By the way, what the hell, you guys can't solve it?" Cheng Nuo asked curiously.

Sheng Fei spread his hands helplessly, "The four fields we are involved in are all biased towards geometry, otherwise we wouldn't have been recruited here." ”

"The problem that Yi Ge encountered belongs to the problem of linear calculation of combinatorial mathematics, and we can't help it. ”

"So, call you, a math generalist, and see if there's anything you can do. ”

Sheng Fei briefly told Cheng Nuo what happened.

Cheng Nuo nodded, expressed understanding, and asked, "What about the specific problem?"

"This way. Sheng Fei led Cheng Nuo to an office desk.

And that desk, this time has been used by Yi Ge again.

"Yi Ge, you can briefly tell Cheng Nuo. Sheng Fei spoke.

Yi Ge nodded with a serious face, leaned over, opened a document on the computer, brushed the hair around his ear, and spoke, "What I am responsible for studying is the theorem derivation process of the accumulator map. ”

According to Cheng Nuo, it stands to reason that we should derive four equations with respect to integrable mappings. The first two theorems are fairly simple, and can be derived in just a few simple logical formula steps. ”

But to the third theorem, which is to express an L(λ)D(λ)=? (λ)∑φ^2 In this process, it is necessary to use some knowledge of combinatorial mathematics in order to reach a conclusion. ”

"Is this here?" Cheng Nuo said with a few glances, pointing to a line in the document.

"Yes, that's it. From Equation 2 to Equation 3, I don't understand the specific derivation steps. Igo chick nodded like a peck of rice.

Cheng Nuo turned around, pulled over a chair, sat on a blank desk next to him, stretched out his hand,

"Paper, pen!"

Yi Ge was very attentive to hand over the pen and paper to Cheng Nuo.

"Don't bother me. After saying this, Cheng Nuo lowered his head, and the pen listed the equations on the paper.

【α=﹤?φ1，φ1﹥（2﹤φ1，φ2﹥-1）/﹤?^(-1)φ1，φ1，...... Direct calculation: ∑dφ1j∧dφ2j=∑nj......]

Five minutes later......

Smack!

Cheng Nuo closed the cap of the pen, picked up the A4-sized scratch paper written on both sides, and handed it to Yi Ge behind him.

"That's the derivation step, take it!"

After speaking, Cheng Nuo straightened his clothes, waved his hand, and left the office without looking back, leaving everyone with a handsome and chic back.

Downstairs, Cheng Nuo, who walked out of the building in a handsome posture, was directly confused by the heat wave in his face.

Sister, I knew I would stay in the air-conditioned room for a while, and this is when the sun is the most poisonous.

There was no way, he had to finish pretending to be hard, and under the high temperature of nearly forty degrees, Cheng Nuo walked back to the dormitory while wiping his sweat.

............

After experiencing Cheng Nuo's pretending performance in the office, Cheng Nuo's leading role among the five people gradually became prominent.

The progress of the project has been soaring at a speed that is visible to the naked eye.

On August 23rd, Cheng Nuo began the fall semester of his sophomore year, which, if nothing else, was his last fall semester as an undergraduate.

Because, in less than a year, he will get his undergraduate graduation certificate and a degree certificate majoring in mathematics, bidding farewell to his undergraduate career.

The course, of course, was as intense as ever.

However, in his spare time, Cheng Nuo still found an opportunity to participate in the orientation work on the first day of freshman school.

Looking at the immature faces, full of longing and yearning for the university, stepping into the campus, Cheng Nuo couldn't help but want to shout loudly:

"The special Lao Tzu has finally become a senior!"

After being someone else's junior for a year, Cheng Nuo finally has the opportunity to call others his apprentice!

At the same time, the benefits of seniors are not limited to these.

In terms of competition for freshman students, those of them who have been in school for a year have much more advantages than those newcomers.

Sister, it's ours!

Senior, it's ours!

Younger brother, also our !!

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