I really just want to be a scholar

"Chang Ai?"

Qin Ke noticed a thin, yellow-skinned, black-haired young man standing at the entrance of the subway. It was his IMO teammate Wang Changai who also won the IMO gold medal.

Wang Changai graduated from the School of Mathematics of Yanda University ahead of schedule last year. He originally wanted to study at Princeton University, but because he is not good at words and has some stutters, he may not be able to pass the interview at Princeton University even if he has a letter of recommendation. Qin Ke then contacted Professor Tao Zhexuan from UCLA recommended Wang Changai to study with him.

After examining Wang Changai's talent and level, Professor Tao readily accepted the student.

Since entering school in September last year, Wang Changai has been busy studying and did not even return to China during the Spring Festival, but he still keeps in touch with Qin Ke and other acquaintances by email.

Qin Ke didn't expect him to come to Sweden suddenly. Could it be that he followed Professor Tao?
Qin Ke was about to say hello, but thought that he had changed his face now, so he stopped the words.

Seeing Wang Changai standing there with two large suitcases in his hands, as if waiting for someone, Qin Ke looked around again, and sure enough, he saw Professor Tao was just a dozen steps away, surrounded by a group of young students who seemed to be fans , with some helplessness and confusion, took out a pen to write and draw on the notebooks handed over by the students, probably for signatures.

Most of them were recognized by local college students as soon as they got out of the subway station and asked for their autographs. As expected of a mathematician who is known as the idol of young students, Professor Tao is really popular.

Although I don't know why Professor Tao and Wang Changai didn't take a taxi, but took the subway to come near the venue, but in order to avoid being recognized by acquaintances, after Qin Ke and Ning Qingyun exchanged glances quietly, they didn't go to join in the fun, and walked quickly leave.

After walking more than ten steps, I heard a student behind me asking in English: "Professor Tao, please tell me, do you think the depth of knowledge is more important than the breadth?"

I only heard Professor Tao answer sincerely: "When I was still a graduate student, I was particularly interested in some theories of mathematical analysis and spent a lot of time on them, because these theories had nothing to do with the research I was doing at that time. I was also told a few words by my tutor. But recently I was doing a research, and these theories I studied gave me a lot of inspiration. So from my experience, analysis, algebra, geometry, etc. All the core theories of the subject are worth spending time studying and studying, but you don’t have to limit yourself to these core theories. If you are interested, you may wish to get in touch with some additional knowledge. The depth of knowledge improves the ability, and the breadth of knowledge improves thinking.”

Qin Ke nodded secretly. If he wants to learn mathematics well, interest is the biggest motivation. It is difficult to learn well if he studies for the sake of learning. Professor Tao can achieve dazzling results in most fields of mathematics. In addition to being a super mathematical genius, Maintaining strong curiosity and strong interest in mathematics is also one of the important reasons.

Qin Ke gave a thumbs up to his good friend, but then he heard Professor Tao say: "My good friend Professor Qin Ke and his wife Professor Ning Qingyun have done a good job in this regard. When they were undergraduates , it took two years to get in touch with all subjects they were interested in, rather than confining their time to professional areas, so they have achieved excellent results in several subjects over the years."

Qin Ke thought that Professor Tao had recognized him and said this on purpose, and turned his head quietly, only to find that he was not looking this way at all.

Professor Tao handed back the signed notebook to the students, and continued: "Speaking of which, it doesn't make much sense for you to ask me to sign it. The best mathematicians in the world should be Qin Ke and Ning Qingyun from Xia Guo. They will come to Sweden in two days, you can ask them to sign..."

Qin Ke almost staggered, okay, Professor Tao, you are such a big-eyed guy, you actually led the "disaster" to yourself and Ning Qingyun in a blink of an eye?

Another female student said with hope in her voice: "I am the chairman of the student union of Lund University. We are not qualified to listen to the lectures of Professor Qin Ke and Professor Ning Qingyun, and we cannot enter the venue. I wonder if Professor Tao can invite The two of them came to our Lund University to give a lecture? We applied to the school, and the school also sent an invitation letter, but Professor Qin and Professor Ning replied that he was too busy with work and declined, and we have always regretted it.”

Professor Tao was straightforward: "Okay, I will try."

Qin Ke was afraid that he would be recognized by Professor Tao and Wang Changai, so he didn't listen any more. He dragged Ning Qingyun and ran away. Jiang Chao and Jiang Qi naturally followed behind them quickly.

Entering the subway, Qin Ke complained: "This old Tao is not kind, next time we have to prevent him from selling us out."

Ning Qingyun just pursed her lips and chuckled, but Jiang Qi asked aloud: "Is that the famous Professor Tao Zhexuan just now? He looks familiar, and his photo is hung in the corridor of Xiangjiang University." She said He laughed and said, "Of course, there are still photos of you two. You two, like Professor Tao, are the idols of countless students in Xiangjiang University."

Qin Keqi said: "Could you really be students of Xiangjiang University?"

Jiang Chao nodded and said: "Yes, Xiangjiang University is a genuine college student, and there are many family members of important families in Xiangjiang University who need to be protected. Jiang Qi and I have stayed in Xiangjiang University for eight years, and we have learned a lot about it. Cantonese. We originally practiced Wing Chun of Ruan Qishan's lineage, but because we stayed in Xiangjiang for a long time, in order to better integrate into the local environment, we became Wing Chun disciples of Ip Man's lineage..."

Qin Ke: "..."

Well, it's really not easy to do it, even the teacher has changed.Qin Ke didn't know which branch of Wing Chun he was practicing, but it seemed that he was from the same school as Jiang Chao and Jiang Qi?

Jiang Chao and Jiang Qi are a bit of a chatterbox, they really don't look like bodyguards, but they are really good playmates, and they won't worry about being lonely and boring.

Qin Ke guessed that this kind of bodyguard who didn't look like a bodyguard would make people doubt his and Ning Qingyun's disguised identities.

A group of four took the subway to the Nordic Museum.

The Nordic Museum is a museum on Stockholm Zoo Island. It was established in 1873. It mainly displays the history, culture and folklore of Northern Europe. It is one of the largest cultural and historical museums in Northern Europe. Its collections include clothing, jewelry, furniture, paintings, sculptures, and household appliances. , musical instruments, ships and more, one of the most famous exhibits is the crown and scepter of Swedish King Gustav Vasa.

After disguising and adopting a new identity, Qin Ke and Ning Qingyun have no scruples when playing. The only pity is that the photos taken are not their real appearances.But it doesn't matter, sometimes you don't have to take a group photo to record the footprints of the past, and it's good to record it with your heart.

The two of them and Jiang Chao seem to be two couples traveling together. In addition, there are quite a lot of tourists from Xia Kingdom who come to travel, and they are not conspicuous in the crowd. Occasionally, when they hear familiar Chinese, some tourists will come to make a call. call.

Qin Ke recognized two familiar Japanese mathematicians among the visitors.With superhuman memory, Qin Ke can still recall the names of these two people. One is Yukinobu Toda, a professor at the Kavli Institute of Numbers and Cosmos affiliated to the University of Tokyo, who is good at algebraic geometry, and the other is also from the University of Tokyo. Mathematics professor, named Hiroshi Iriya, is very famous in algebraic geometry, symplectic geometry, and mathematical physics.

The two gave a 45-minute report at the last International Congress of Mathematicians, and they had competed with Ning Qingyun on the same stage.

The two chatted in Japanese while visiting.

Because Toda Yukinobu and Iriya Hiroshi happened to be walking in front of them, their voices were not deliberately lowered, allowing Qin Ke and others to hear what they were saying.

Qin Ke's Japanese level is relatively average, so he can barely say hello and ask directions, but Ning Qingyun's Japanese level is not bad, and said in a low voice: "They also came to listen to your report. It is said that Mochizuki from Kyoto University Professor Shinichi is also here..."

Mochizuki Shinichi?

This is a well-known "weird", known for his academic achievements as "cool and crazy", and he also claimed to have proved several famous conjectures including the abc conjecture through the original "interuniverse Teichmüller theory", and defined Many mysterious terms unheard of in mathematics, including the so-called "alien arithmetic holomorphic structure".

Just because these theories are too mysterious, not many mathematicians are willing to spend a few years to figure out their self-defined terms, the context of reasoning and the structure of the theory, as well as whether this "inter-cosmic Teichmüller theory" is correct or not, so far the international mathematics No one in the world admits that Mochizuki has proved the ABC conjecture.

Oh, I mentioned it before, but I think many people have forgotten that Professor Mochizuki Shinichi is a doctoral student of Faltings, a Germanic mathematics master who has always been known for his seriousness, and he has been studying in France since he was 23 years old. Ertings received a doctorate certificate in his hand, which shows that his strength is indeed extraordinary.

In addition, there are rumors on the Internet that this Mochizuki Shinichi is the founder of Bitcoin "Satoshi Nakamoto", and he has long been one of the hidden rich men in the world.

Qin Ke did not expect that this weirdo, who is almost 55 years old this year but still independent and immersed in his own mathematical world, would come to Sweden to listen to his report on the NS equation.

Qin Ke shrugged his shoulders: "He will come when he comes."

Ning Qingyun's face changed slightly, and he lowered his voice and said: "They also said that Mochizuki Shinichi claimed to have found a loophole in our paper "Proving the existence of smooth solutions to NS equations in three-dimensional space" a few days ago. Those who will come are not good."

Jiang Chao and Jiang Qi beside them looked at Qin Ke in surprise at the same time.

Qin Ke just smiled lightly and said, "Well, let him let him come here."

The two Japanese mathematicians walking in front walked to the left at a three-way intersection. Qin Ke was not interested in following the two, so he pulled Ning Qingyun to the right. Seeing that Ning Qingyun didn't say much, Moreover, the small hand that was holding his own was raised nervously, as if recalling the details of the thesis, wanting to see if there were any loopholes, Qin Ke couldn't help laughing and said:

"Don't worry, Mochizuki Shinichi's four pre-printed manuscripts introducing Inter-universal Teichmüller theory (inter-universe Teichmüller theory) have also been read. Knowing this guy's level, he still can't pick out the thorns in our paper. Not to mention him, including Tao Zhexuan, all the mathematicians in the world who have studied NS equations can't pick out the mistakes and omissions that don't exist at all. Come."

Qin Ke does have such confidence. The proof ideas and even the proof process in this paper are the same as those in the S-level knowledge "Exploration and Detailed Explanation of the Nonlinear Partial Differential Equation "Navier-Stokes Equation" (End) The "small difference" is just because the two of Qin and Ke adopted different methods of handling the incident, and it is not a mistake or omission.

Seeing that Qin Ke was full of confidence, Ning Qingyun finally felt relieved. If there was anyone she had the most confidence in, it would definitely be Qin Ke.

After visiting the Nordic Museum, the four of them went to taste the traditional Swedish food meatballs and roast suckling pig together.

The roast suckling pig in Stockholm is very different from domestic ones. It is mainly served with Swedish sausage, sauerkraut and mashed potatoes. You can also add seasonings such as chili sauce and mustard. It tastes delicious and has a variety of flavors.

That night, not long after the two returned to the hotel, they received a video call invitation from Professor Tao, but Professor Tao had already checked into the Stockholm Grand Hotel, and knew from the conference staff that Qin and Ke had arrived, so he wanted to invite them get together.

Qin Ke and Ning Qingyun took a shower, removed their camouflage clothes, changed back to their usual clothes, and went to the Stockholm Grand Hotel accompanied by Wei Feng and Wei Jing.

Wang Changai was extremely excited when he saw the two of them: "Brother Ke... sister-in-law..."

"Chang Ai is in good spirits!" Qin Ke patted him on the shoulder vigorously, and then greeted Professor Tao: "Professor Tao, long time no see."

Professor Tao was still staring at the laptop screen, and when he saw Qin Ke coming into the room, he waved to him and said with a smile: "Professor Qin, many people on the Internet are speculating about the chances of you two winning the 'Einstein Science Award', Someone sent me an invitation and said to give me $500 million, and let me give a more reliable probability."

"How about you give a 50% probability, and then we will split the $500 million equally?"

Qin Ke and Professor Tao looked at each other and laughed.

Professor Tao opened his arms and hugged Qin Ke vigorously: "Congratulations on your new mathematical achievement, my friend. And of course you, Professor Ning. I have a lot of details about your paper. Continue to communicate with you two, come on, let's have a sleepless night tonight."

Of course, Sleepless Night was just a joke, but Qin Ke and Ning Qingyun had an in-depth discussion with Professor Tao for nearly three hours before being "released" and returned to their hotel.

The next day, Qin Ke took Ning Qingyun to the Royal Swedish Academy of Sciences. First, he went to visit Mr. Rovshan Oliver, the editor-in-chief of the "Acta Mathematics". There are smooth solutions to NS equations in three-dimensional space" submitted to the "Acta Mathematics", while taking two people to receive foreign academician certificates.

The old man smiled and said: "Academician Qin, Academician Ning, in fact, I hope that you will become our foreign academicians because of mathematics, but unfortunately our selection committee members here pay more attention to applied science, so you created 'Computational Seed Science' and ' After desert sweet potato, they finally voted to grant you the status of foreign academicians. Anyway, congratulations, you are the youngest foreign academicians in the history of our Royal Swedish Academy of Sciences!"

Although the Royal Swedish Academy of Sciences also has many academicians who are good at mathematics, its "Journal of Mathematics" is also one of the four top journals in the world. It also has the Craford Award for mathematics, astronomy, biology, earth science, polyarthritis Although the Royal Swedish Academy of Sciences is most proud of awarding the Nobel Prize in Physics and the Nobel Prize in Chemistry.

This is probably because there are very few mathematicians among the foreign academicians of the Royal Swedish Academy of Sciences.

Unlike domestic academician certificates that require a large-scale ceremony, the process of receiving a foreign academician certificate from the Royal Swedish Academy of Sciences is not complicated, and it can even be called simple.Signing, obtaining the certificate, and taking a group photo, the entire process is considered complete, and the media is not even specially called to report.

But what no one can ignore is that Qin Ke and Ning Qingyun are already foreign academician certificates from the Royal Swedish Academy of Sciences, the German Academy of Sciences, and the Royal Netherlands Academy of Arts and Sciences, plus Xia Guo's own academician certificates. "World-class academician"!