universal data

Chapter 351 O Award

354 chapter

It was Li Jiani who responded: "Then speaking, there is really a question that I need your help with as a teaching assistant!"

Li Jiani typed in the WeChat group.

She wasn't joking, but she really had a difficult problem to ask others to solve.

That was an after-school homework question left by their real variable and functional analysis teacher last week.

She first thought about it alone with a pen for half an hour, but she didn't figure it out.

Later, after asking my roommates, I also found out that every one of them would.

There is no way, Li Jiani can only ask the top students in the class for advice, but the result is...they can't either!

This made Li Jiani very uncomfortable!

As for the senior seniors, Li Jiani is not familiar with them.

Besides, since those big math experts in my class said they couldn't figure it out, even if you just find a senior senior, it's hard to say that they can give you the answer.

Coincidentally, Cheng Nuo said so in the group chat, and Li Jiani thought of this.

One is to help me solve math problems, and the other is to test whether my young teaching assistant is really as young and talented as the rumors say!

"Send the question and I'll help you look at it." Cheng Nuo didn't finish his sentence.

If he said that he could solve it 100% of the time, then student Li Jiani directly threw Goldbach's conjecture at his face, what would he do?
Let's wait for the topic to come out!
"Then assistant, wait for me for a while, I'll take a picture of the topic and send it to you." Li Jiani replied.

In a few seconds, Li Jiani posted a picture in the group chat.

Cheng Nuo clicked it a little nervously, and after a second, he breathed out softly.

"How, can you solve it?" Li Jiani asked in an uncertain tone.

"Wait for me five minutes."

After Cheng Nuo finished sending this sentence, he turned off his phone and put it on the table.

Then, I opened the notebook on the desk, tore off a random piece of paper to use as a draft paper, picked up the pen, and wrote formulas on the paper as if at my fingertips.

Cheng Nuo had already read the topic, and it was a very common one.

Of course, this routine is compared with Riemann's conjecture, four-color theorem, and Goldbach's conjecture.

Cheng Nuo was really worried that Li Jiani, a little girl, would come up with a world problem that would make him unable to get down in front of more than 100 people.

But fortunately, Li Jiani should be regarded as sincerely asking for advice.

[Please prove that if (X, τ) is a second-order linear topological space, (Y, ||-||) is a linear quasi-norm space, if TnX→Y(j∈J) is a family of continuous maps, and... For all j ∈ J, there are T, U ∈ V.]

This is a topic belonging to the field of functional analysis.

The questions are difficult, but that's only for ordinary outstanding students, but for Cheng Nuo, hehe...

It can only be said that it is not even an appetizer.

He has long lost interest in such low-level topics, if it wasn't for pretending...

Wipe, say slip up.

If it wasn't for answering questions, you thought Cheng Nuo would answer such questions.

The nib of the pen is like a swimming snake, swimming quickly on the paper.

After all, it was agreed that it would be done in one minute. If I didn’t finish writing because there were too many formulas, then it would be really embarrassing.

And in the group, after Cheng Nuo finished sending the "Wait for me for a minute" message, the group also started discussing.

Responding to Wu Yong: "1 minute? Couldn't the teaching assistant go to the calculation tool?"

Li Yunteng: "Just take paper and a pen. It took so much time. I think [-]% of them went to the toilet."

Responding to Li Jiani: "I don't know such a difficult topic, can the teaching assistant handle it?"

Ying Shu Lu Qiu: "It should be possible. I consulted a senior graduate student on this problem at noon, and he just replied to the message with a little clue, and it is estimated that he will be able to solve it tomorrow. If Assistant Professor Cheng comes, it should be done in an hour! "

1 minutes passed quickly.

In the group, Cheng Nuo first sent a message: "It's done!"

Done?What's the deal? !
Seeing the three words, everyone in the group was stunned for a while.

However, when they saw the picture posted behind Cheng Nuo's text, everyone was terrified and their minds cleared up.

No way, it's only 1 minute? ! !
They all thought of that possibility, their fingers trembling, and hesitantly clicked on the picture.

What caught my eye was the word "proof" written in a black carbon pen.

Below is a series of formula combinations.

That's the concrete proof step.

[Because Λx∈X, the set {Tjx; j∈J} is a bounded set in (Y, ||-||), so Λx>0, there exists ns<0, sometimes...]

Line by line, step by step.

Cheng Nuo wrote the idea of ​​solving the problem very clearly. Even Tsinghua undergraduates like them can fully understand Cheng Nuo's idea of ​​proof after reading one side.

At the same time, he also knew whether Cheng Nuo's proof process was correct or not.

1 minute, according to Li Jiani sent him a question only 1 minute later!And the specific proof steps have been shown in front of them.

The monsters nowadays are all so perverted!
How does this make us living in the same era as him!

Cheng Nuo didn't look at the "scary" comments from the students in the group.

After playing a few games, Cheng Nuo climbed into bed and went to sleep.

Tomorrow, there is one more thing waiting for him.

…………

The next day, in the morning.

Today is a very important day for many students in universities around the world.

Because of this time of year, the winners of the American College Mathematical Contest in Modeling will be announced on the official website.

Certificates and medals will then be shipped from the headquarters of the American Mathematical Society to universities around the world.

Early in the morning, Cheng Nuo was called to the office building of the number institute, and sat in front of a computer with several teachers who looked like leaders.

At 10:00 Kyoto time and 22:00 US time, the official website of the competition will announce the list of winners of the major awards.

This time, Tsinghua School of Mathematics naturally went for the O Award.

For them, one O award is more important than ten F awards and M awards.

Tick, tick!
The hour hand keeps turning, and the time is getting closer and closer.

Tick ​​tock!

It's exactly ten o'clock.

The dean of the Department of Mathematics glanced at Cheng Nuo behind him, took a deep breath, opened the official website of the competition, and opened the column of "Winners".

The order of awards is from largest to smallest.

First twenty O awards, then F awards, M awards.

The internal ranking of each award is in no particular order and is listed alphabetically in English.

The dean of the mathematics department looked at the first column of the O award.

The winning team is from Harvard University in the United States, the topic is B, and the title of the paper is...

The second column is from Oxford University in Yingguo.

The third column comes from Boffi University in Germany.

…………

He glanced line by line, but he never saw the familiar school name.He was about to let out a sigh of disappointment, but his eyes suddenly froze.

In column No.18 of the O Award, he saw a familiar school and name.

Award-winning team members: Cheng Nuo, An Yang, Shi Qi
Nationality: Hua

School: Tsinghua University

Selected topic: A topic

Title of the paper: "Research on the Overtaking Model of One-way Driving Lane"

(End of this chapter)