The phone was hung up.

In less than twenty minutes, the sound of "knock knock" sounded downstairs slamming the door.

Lu Zhou, who had just come out of the toilet, went downstairs and opened the door.

I saw that Professor Feverman, who was out of breath, was standing in the doorway, and he didn't even have time to catch his breath, so he asked him.

"Are you really, really solved? NS equation? ”

Looking at Professor Feverman, who was panting, Lu Zhou hesitated.

“…… Why don't you catch your breath first? ”

"No, you don't." With a wave of his hand, Peverman leaned against the edge of the door and said breathlessly, "Tell me, how did you do that?" ”

This professor, who is usually gentle and elegant, said this sentence in an unprecedentedly serious tone.

Reading the desire for truth in his eyes, Lu Zhou's expression changed slightly.

“…… It's a long story, come with me. ”

With that, he turned and walked in the direction of the stairs......

Taking Professor Feverman to the second floor, Lu Zhou went straight into the study, cleaned up the messy table and floor, turned out the hundred pages of manuscript paper, and handed it to him in its entirety.

Looking at Professor Feverman, who quickly took over the paper and was already immersed in thinking, Lu Zhou stood next to him and reminded him.

"For the part about L manifolds, I quote the paper published in the Annals of Mathematics some time ago, and if you haven't read it, I suggest you read it together with that paper."

Ignoring Lu Zhou's explanation, Professor Feverman just stood motionless, not making any movement except turning the page.

And so, about an hour passed.

Finally, he slowly put down the paper in his hand and sighed softly.

“…… Incredible, incredible. ”

Of course, an hour is not enough time to fully understand the core idea of the whole paper, but for Fepferman, it is still possible to quickly go through it without missing the details.

Perhaps the solution of a major mathematical proposition requires rigorous scrutiny and open discussion among the entire mathematical community, but at least for an hour, he could not find any glaring errors.

The writing and ideas of the whole paper are as smooth and rigorous as the clean and neat handwriting.

In particular, the ingenious mathematical methods used in the paper made him even more amazed.

"It's really surprising," Lu Zhou handed him one after making two cups of coffee, and said in a joking tone, "In proving the last inference, even I was surprised by my own wit. ”

Professor Feverman took the coffee, shook his head and said, "No, more than the last corollary, you don't understand what you've done." ”

Lu Zhou: "What are you referring to?" ”

"You introduced the method of differential geometry to the field of partial differential equations by introducing the method of L-manifold, and on this basis, you successfully introduced the principle of topology...... In my mind, this is unprecedented. ”

At this point, Professor Feverman felt a little thirsty and took a sip of his coffee.

After a moment's pause, he said without joking in a tone with a hint of joking.

"Gromov, who introduced the concept of quasi-holopure curves to differential geometry, pioneered symplectic geometry, and Qiu Chengtong, who introduced partial differential methods to differential geometry, laid the foundation for geometric analysis. In my opinion, the L manifold is equally important for the solution of the NS equation. If I were you, it would be time to think about how to name this new subject. ”

Hearing that he was going to choose another name, Lu Zhou couldn't help but have a headache.

"I'll wait until later, I need to rest now."

Feverman's reaction was strong and he immediately said, "No! You can't take a break yet, and you don't even have a second of rest until you can upload your manuscript to an electronic file! ”

Seeing that Professor Feverman didn't look like he was joking, Lu Zhou was slightly stunned and hesitated, "...... I remember if I could postpone uploading my paper for a few days? I'm an hour-long reporter. ”

No matter how you say that you are also an internationally renowned scholar, it is not impossible to play some big names, right?

He didn't mean it anyway.

Hearing this, Professor Feverman shook his head.

"Of course, it's okay to postpone the upload, but this is a 100-page paper, how long do you plan to postpone it?" Not to mention that the details of the paper still need to be revised. I'll be the master of the International Union of Mathematicians for you. Mr. Shisen's e-mail is that all you have to do now is to sort out the paper as quickly as possible, within three days, and within a week at the latest! ”

With that, Professor Feverman placed his coffee cup on the table, turned and walked towards the door.

However, when he reached the door, he suddenly stopped as if he remembered something.

Taking a deep breath, Peverman turned around, looked at Lu Zhou, and said solemnly.

"By the way, I almost forgot, I have to say thank you."

"Thank you?" Lu Zhou was slightly stunned, and then said with a smile, "There is nothing to thank for this, you are also a member of the NS research group." ”

Professor Feverman smiled and shook his head, "No, that's not what I mean by thank you. ”

After a pause of about three seconds, he cleared his throat, suddenly changed his tone, and continued to speak in a solemn and solemn voice.

"Rippling boats create water waves, and jets flying at high speed create turbulence. Mathematicians and physicists believe that the understanding of the NS equation enables the interpretation and prediction of these two problems......"

Hearing the abrupt monologue, Lu Zhou was slightly stunned.

Immediately afterward, he suddenly had a sense of déjà vu that he had heard it before, or that it seemed familiar.

Almost subconsciously, he picked up the sentence and whispered it.

“…… Although the NS equations were proposed in the 19th century, we still know very little about them.

"That's right," Professor Feverman smiled and nodded slightly to Lu Zhou, "Therefore, we are here to challenge scholars from all over the world to refresh the history of mathematical theory and uncover the unsolved mystery of the NS equation!" ”

There was a moment of silence in the study.

After thinking about it for a long time, Lu Zhou finally recalled the origin of this monologue.

“…… This is the declaration of the Institut Clay at the Millennium Mathematical Conference of the Institut de France? ”

"That's right," Professor Feverman smiled, telling the story as if he were recounting a piece of history, "On May 24, 2000, at the Millennial Conference on Mathematics at the Institut de France in Paris, the Clay Institute announced seven millennial problems, including the NS equation problem, and this manifesto is the part of the NS equation. ”

"And the spokesman, it's me."

Lu Zhou was stunned.

He knew, of course, that the seven millennial problems were prized by the Institut Clay, and that they were presented at the Millennial Mathematics Conference held at the Collège de France.

But he never imagined that the proposer of this millennial problem about the NS equation would be next to him, and he was also a member of his research group?!

This made him feel like he had overcome the questioner......

Well, the analogy may not be quite appropriate.

And standing here, the word victory is not very accurate.

"Congratulations, Professor Lu," grabbed Lu Zhou's right hand and shook it vigorously, Professor Feverman smiled and sent his congratulations, "Just now, history turned a new page, and you and I are witnesses to this moment!" ”

"Remember to upload your paper on time, and keep this manuscript safe, it has the potential to become a cultural relic."

Throwing this sentence down, Feverman smiled and made a salute gesture, and turned to walk out the door without stopping.

Looking at the back of the meteor striding downstairs, Lu Zhou, who was standing at the door, was stunned for two seconds, and suddenly shook his head with a smile.

Glancing at the manuscript paper in his hand, he sighed softly.

“…… Princeton is truly a magical place. ”