Chapter 263 A team like chopped pepper fish heads
“Teacher, do you want to pack something nice?”
Xue Xuequing grabbed her long yellow hair and stood in front of Xu Qingshan’s desk, lowering her head to look at her toes. But because of the capital chest, I can only look at my own capital with uneasiness.
"You"
Xu Qingshan looked at the bright colors in the room, and for a moment he didn't know how to evaluate it.
The department key was just given to me yesterday, but today the department has completely changed.
“You have a strong execution ability.”
As Xu Qingshan spoke, he still did not criticize this diligent and enthusiastic little girl.
It’s just that the logo on the door is painted in neon colors that are similar to the cyberpunk style, which is really eye-catching.
【青山组】
Those who didn’t know better thought this place was some kind of Sakura Heisekai.
"Really? Teacher, you also like it very much! Right!"
Xiao Xue seemed to have been greatly encouraged, and he jumped up and down excitedly, his capital rippling. , before charming eyes, but Jiang Huanxi was by his side, Xu Qingshan quickly withdrew his eyes.
“Okay, go back and look at the harmonic analysis. I’ll give you three days.”
“Teacher, I’ve finished reading the harmonic analysis. I can try it. Be a part of it."
Before Xu Qingshan finished speaking, Xiao Xue shouted happily with the excitement of being recognized just now.
“Forget it, Wang Wei, please close the door and wait until it disturbs other departments.”
Xu Qingshan didn’t want to close the door, but Xiao Xue was making too much noise.
Fortunately, there is Comrade Xiao Jiang accompanying him in the room, and since what happened in the south, the teacher is also allowed to install a camera in the room for monitoring, which can not only prove oneself at critical moments, but also monitor the situation. No one came to steal the research group materials.
"Okay, take a look at this. If you can explain it clearly and deduce it clearly, then I can start assigning work to you."
Xu Qingshan rummaged through the documents at hand, found a part of the work he had split, and handed it to Xue Xuequing, who had already eagerly picked up a pen and sat at his desk waiting for the information.
“Actually, you can go back to your place and do it.”
Xu Qingshan reminded me.
"Teacher, although you are very strong, don't underestimate me!"
"A little coordination and analysis, win it!"
Xiao Xue Gengen Without raising his head, he read the material quickly and moved his hands simultaneously.
Xu Qingshan’s eyes narrowed.
This escaping guy really has something, he is very fast in reading and writing, very fast in translation, very active in thinking, and very efficient.
You must know that the literature materials Xu Qingshan gave her were original English versions.
And Xiao Xue did not draft at all, he wrote the manuscript directly.
However, now Xu Qingshan really understood why Zong Chuanming wanted to leave the student to him.
Teachers love and fear capable problem students.
It hurts, but it’s not the same thing. These powerful problem students can ride over your head and stir up trouble.
No matter what, if you don’t have the same young mind and enough strength, you really can’t suppress it.
Looking at it, it seems that the ones who can make students with these problems want to actively follow up and be convinced are really stronger young teachers.
But even at Beijing University, there are not many top-quality green peppers, and Xu Qingshan is considered the best.
If Zong Chuanming doesn’t throw the blame to him, who else can he throw it to?
"Teacher! I've done it!"
Xiao Xue confidently turned the manuscript in his hand and handed it to Xu Qingshan.
“So fast?”
Xu Qingshan was a little surprised.
I still seem to have underestimated them, but that's right. As doctoral students from the top universities in the country, how can they be just ordinary people?
“Let me take a look.”
Xu Qingshan took the manuscript and looked at it carefully.
A moment later.
Xu Qingshan looked up in surprise at the confident girl sitting in front of him and nodded.
"Yes, then I'll give you this information."
He pulled out another folder from his hand, which was the part he had sorted out last night.
“Guaranteed to complete the task!”
Xiao Xue accepted the task and was full of confidence.
The girl's butt had just moved away, and the chair was still warm. Before Xu Qingshan had time to look at his other document, Wang Wei's long black hair floated over like Sadako.
"Xiao Wang, why don't you tie your hair?"
Xu Qingshan pursed his lips and made a slight suggestion.
"Da baa."
Xu Qingshan:
Why is it in Japanese again? It is indeed a two-dimensional house.
You must know that in 2009, two-dimensional otaku is not yet a mainstream hobby, and it can be regarded as a rare talent.
"Okay, what do you think of the branch topic mentioned last night?"
Xu Qingshan looked through the documents he prepared for Wang Kai.
“No problem, I have the basics and have learned everything. I can start doing it directly.”
"So powerful?"
Xu Qingshan said subconsciously, but felt a resentful gaze coming from the opposite corner.
He looked over and saw Xiao Xue staring at him with a pair of resentful eyes like a female ghost who had been dead for hundreds of years.
No, what’s wrong?
Before Xu Qingshan asked, Xiao Xue made a preemptive strike.
"Teacher, why do you say that Wang Wei is great, but you don't say that I am great?"
".You are also great."
Xu Qingshan feels that he is nothing here Kyoto University Institute of Mathematics, this is basically the kindergarten branch of the Institute of Mathematics at Kyoto University!
What and what is this!
"Then I'll give this to you. If you don't understand, just ask."
Xu Qingshan found that since the establishment of his research team, every day has been a tiring day, even though it was only the second day.
"Okay, teacher."
Wang Wei nodded seriously. Xu Qingshan saw that her nodding was like kowtow, and subconsciously handed over his hand.
Sure enough, the girl knocked her head on the table again. Fortunately, Xu Qingshan’s hand was cushioned this time, so she didn’t hurt anymore.
"Teacher"
I don't know why tears filled Wang Wei's eyes.
Xu Qingshan suspected that she was thinking of some anime and waved her hand.
"Go to work, don't bother."
"Hmm!"
"Oh."
Xu Qingshan sighed, turned his head and saw Jiang Huanxi looking at him with curved eyebrows and a smile.
“Don’t laugh, I’ll leave these two to you.”
Xu Qingshan handed the last two documents to Jiang Huanxi.
Now that he has a rough idea of the academic and research abilities of Xue Xuequing and Wang Wei, he can let go, roll up his sleeves and get to work.
In this small building exclusive to the Institute of Mathematics, School of Mathematics, Beijing University.
Xu Qingshan’s department can be considered unique.
The brightly colored graffiti and logos form an extremely sharp contrast with the boring colors that only exist in off-white and gray-white basic colors.
Fortunately, Xu Qingshan’s department is at the end of the corridor on the second floor, in the corner.
No one is using the department opposite him, and no one would come over to see such a wonderful door in his department.
But in this unique department.
But it has a vitality that is different from other departments.
Perhaps due to the issue of average age, the average age of Xu Qingshan’s department research group is only 22 years old, and two doctoral students have raised this figure.
Compared to other departments where the youngest ones are around 28-30 years old, they are completely new forces.
Perhaps staying in a boring environment for a long time will indeed affect work efficiency.
In other departments, doctoral students and researchers write, take a look, make a cup of tea, look at the scenery, chat, and finally return to their workstations to check on their work today. How much.
Before they start working, they will roughly plan their daily work content in advance based on their experience.
As for not being able to research key nodes when they encounter them?
It doesn’t matter, it’s a daily routine, just consume it slowly.
Maybe Qingshan’s department is different.
"Teacher! Fourier transformation 1 and 2 are equidistant linear transformations, so can the unique continuation of bounded linear operators also be equidistant linear operator pairs?!"
"Yes, the unitary operator is an isometric linear surjection on the original L2Rn."
"Good teacher!"
"Didn't you learn it well? Why do you know this basic knowledge point? Forgot?"
"I'm just confirming it again!"
"Teacher! I have a problem too. I don't know which direction to go in. Am I right? Both are suitable."
"Just find the upper bound of the linear sensitivity. Take a look at the paper co-authored by VanMelkebeek in 2007. The upper bound of the linear sensitivity of the Boolean function should be O ( n times divided by logn), you can see the process for yourself."
"Qingshan, here is the only sexual sensitivity, please see if my idea is correct."
"Well, No problem, just keep going.”
In a small department.
The voices came and went.
Although it may sound very noisy to the ears of people who don't understand, for the four people involved, the atmosphere is very harmonious.
It seems that when they are working at their desks, the beauty of mathematics turns into notes flowing between them.
They seemed to be playing a grand concert with the pen and paper in their hands.
The conductor and director of this concert is Xu Qingshan, who is sitting behind his desk and quickly processing various documents.
Compared to the three girls who focus on academic branch research and backbone derivation, Xu Qingshan is almost operating multi-threading at ultra-high frequency.
Not only did he take turns answering the questions the three girls encountered during their research, he was also supplementing his knowledge of cryptography based on his statistical foundation, especially in cryptographic hash functions with a high degree of randomness. and the construction of pseudo-random number generators.
If the research groups of the world’s top universities and research institutes could be compared to cars.
The world is full of top-notch cars.
There is that kind of super team that is equipped with many industry leaders. Although the number of team members is not particularly large, each one is the top existence. In the track they target, they are irreplaceable top super teams. Run, and some teams even have no competitors at all.
Some are large off-road SUVs with strong teams, many team members, and very reliable and stable research teams.
Some are very normal coupes, with a low-key and luxurious appearance and good capabilities.
As for Xu Qingshan and the others?
You can say that.
Xu Qingshan’s research team is like a Wuling Hongguang mini with a V12 engine, a minced pepper fish head with a super “heart” and absolute control over the steering wheel.
It looks pink and tender, and it is small and cute.
But when it actually runs, everyone will be amazed by its amazing speed and stability.
"Teacher! This part is finished!"
"Teacher! I've finished it too."
"Qingshan, I'm almost done. You should finish reading. It’s done.”
It’s not even time for dinner. Xu Qingshan received perfect answers from team members.
Although the tasks he divided were not too many, the amount of time Xu Qingshan reserved for them was three days.
"Let me take a look. If there is no problem, you can rest for two days and I will give you the new part."
Xu Qingshan took the folder back into his hand.
It will be much more convenient if information-based office becomes popular in the future. Now, in fact, more people still print papers for correction, which is relatively easier to record and keep files.
"Teacher! I don't need to rest, I can still do it!"
"Me and I, too!"
Xu Qingshan looked at the two people in front of him and raised their chests. She was quite a bit dissatisfied with the other's ideas, and for a moment she didn't know whether to feel lucky or sad.
This was his first time tutoring students full-time, but was he pushed by the students the first time he tutored students?
It is said that some graduate students push their own supervisors, are these two the only ones?
"Okay, do it if you want. Nuo, these two, give this to Xiao Xue and this to Xiao Wang."
Xu Qingshan picked two for them, but he had already prepared them. It's just that the timeline has been advanced.
"Teacher, I said it! I am a little king, not a little tortoise."
"Okay, okay."
Xu Qingshan sorted out their parts and found that indeed It's very good, the details are appropriate, the steps are beautiful, and the whole derivation process is very mathematically beautiful. Although it is only a small step in the entire topic, it has strong plasticity and integration.
"Xiaoxi, just take a rest, don't use your brain so much, help me sort it out, I will work with you after I solve this node."
"Yeah."< br>
Jiang Huanxi is a virtuous housekeeper who works hard and never complains. No matter what Xu Qingshan arranges, she will agree to it.
It’s just that her voice is a little weak now and she doesn’t sound very energetic.
"Thank you for your hard work. They may be excited because the research team has just set up. Once their excitement subsides, we can slow down a bit."
Seeing Jiang Huanxi's lackluster response, Xu Qingshan thought she was unhappy.
"Huh? Slow pace? No need to be slow."
Jiang Huanxi was stunned for a moment, came back to his senses, looked at the handsome young man in front of him, and said.
"Then you."
Xu Qingshan gestured to Jiang Huanxi hesitantly.
The tacit understanding between the two naturally makes the girl understand instantly.
"Oh, no, I was just thinking about how the subsequent nodes of the two parts I just made should unfold. I will make a preliminary advance."
Jiang Huanxi said seriously.
Xu Qingshan smiled a little hard.
Broken.
It feels like there are three super motors vibrating wildly in this room.
When I first came to this mathematics research institute, I thought that this environment, this quietness, was very suitable for fishing?
And I actually saw them in other rooms drinking tea, reading journals, and having academic chats.
But I have not yet enjoyed the days when I can sit here and read academic journals in peace, so why do I start to be pushed around by the three beautiful girls around me?
"Okay, then you do it first, and I will give you the follow-up part later."
Xu Qingshan kept smiling.
It feels like a long absence.
Xu Qingshan felt that the last time he had so much energy to study and do research was when he maxed out the OJ question bank at once.
Although the difficulty level is not the same.
But the subjective initiative is the same.
There was only one thought left in his mind.
Open the book!
Since the three girls in the department all want to cause trouble, what can he be afraid of?
He was still too gentle and caring before.
From now on, he wants the girls to know what cows and horses are!
Small house.
There is always busy work going on.
Obviously, none of the four people in this room are in urgent need of scientific research results. Graduation is still a long time away, and no one needs to be in a hurry to evaluate the results of high-quality journal papers for professional titles.
Quietly.
This department, gradually dyed with color and full of vitality, has become the most interesting place in the entire Institute of Mathematics.
At first, there were few people in the corner and no one noticed.
But several times when someone came to Xu Qingshan to ask for innovative ideas, they were shocked by the atmosphere of Qingshan's research team before they even entered the room.
These young people are desperate for their lives!
How can you do this in scientific research?
Should the middle-aged and elderly people be allowed to live?
Quietly, there were slightly fewer people drinking tea and chatting in the Institute of Mathematics, which was not very noticeable.
But the Juan Wang research team in the corner of the second floor quietly allowed this small building, which seemed aloof from the world, plain and comfortable, to be clung to by a unique vitality and aggressiveness, and gradually spread.
After a while, three girls gathered around Xu Qingshan's table and looked at the two pieces of paper spread out on the table.
Jiang Huanxi sat next to Xu Qingshan, his eyes sparkling.
The two girls across the table looked left and right as if they had seen some novel object. They wanted to reach out and take it, but they were embarrassed and awkward.
It's obviously just two pieces of paper, but in their eyes it's as heavy as a thousand pounds.
"Teacher"
This hesitant and procrastinating voice is really not Wang Wei, but the always popular little yellow-haired Xue Xuequing.
Xu Qingshan looked up.
This girl doesn’t have her usual crazy energy, nor does she have the courage to transform her entire office into a graffiti style if she disagrees with her for more than a week. Instead, she purses her lips tightly, His eyes were misty, his fists were clenched, and his legs were moving away from each other. He looked like he was in a hurry to urinate.
"What's wrong?"
"Is this how we finish our work?"
Xue Xuequing bit her red lips until the marks were visible.
“I mean, our project, this Boolean function sensitivity conjecture, has been solved like this?”
“Yes, what else?”
"Just two pieces of paper?"
"This is just for the rigor of the argument. If you want, you can write it clearly in a Weibo."
Now Weibo has become popular. , Xu Qingshan is using it, and of course a trendy girl like Xue Xuequing who can do graffiti will also use it.
Xu Qingshan looked at Xue Xuequing with a strange look.
This girl’s current expression
Why does it look so like Xiaoxi’s reaction at special times?
Could it be
"Wow! It feels so good!"
Xue Xuequing seemed to be in a repressed carnival, jumping up on the spot, screaming and hugging the side. Wang Wei blinked.
Wang Wei was like a little wooden figure, always looking at the two pieces of paper. She was very calm even when Xue Xuequing was holding her and jumping around.
Of course, that's just a first glance. In fact, you can tell how excited she is by looking at her trembling hands holding her skirt.
Xu Qingshan smiled and shook his head, holding Jiang Huanxi's hand.
Have fun, it is indeed worth having fun.
Fortunately, the door was closed, otherwise everyone in the building would have been killed just by force.
Wait until your emotions calm down.
Xu Qingshan just heard Xiao Xue’s confession.
"Teacher, you are really awesome! From my undergraduate degree to my Ph.D., this is the first time in so many years that I feel that doing scientific research is so easy and simple! I love you to death, teacher!"
< br>Xu Qingshan glanced at Jiang Huanxi, who was smiling, and shrugged.
"It's good to be happy, but don't love me. There will be no results. Your little mistress is here."
"So what my brother means is that you can love in private?"
Jiang Huanxi said with a smile.
Xu Qingshan shivered, where did this girl learn this?
"No, there is no private time."
Xu Qingshan turned his head and saw the gossiping and quarrelsome looks in the eyes of the two girls, and raised his hand helplessly.
"Dong Laishun tonight, I will pay you the allowance tomorrow."
"Okay! Long live the boss!"
"Don't worry, I will post the paper on arXiv "For a moment."
Xu Qingshan waved his hand and asked the two girls to return to their seats first, while Jiang Huanxi accompanied him to sort out and review the final version of the paper.
“It’s really hard to imagine that a problem that has plagued the field of theoretical computer science for decades has been solved by us.”
After quieting down, Jiang Huanxi leaned against Xu softly. Qingshan's shoulder said.
"It's just a small problem."
Xu Qingshan uploaded to arXiv according to the process.
“And this paper only has 6 pages in total, and the core proof is only two pages. As you said, it can be condensed directly into a Weibo formula, which is really amazing.”
Jiang Huanxi held Xu Qingshan's strong arms. Although Xu Qingshan's arms would move when typing on the keyboard, Jiang Huanxi felt particularly at ease.
“The truth in the world is often very simple.”
Xu Qingshan finished uploading, turned his face and said.
“Although this is a conjecture in the computer field, its core breakthrough is mathematics.”
“Well, the beauty of mathematics is more extreme than I imagined. This should be considered Is it applied mathematics?”
“To be precise, it can be regarded as computational science, and it is also one of the most perfect applications of mathematics in the computer field.”
“Then I really want it. I’m going to take the path of combining numbers. I think I’ll like it very much.”
"Okay."
Xu Qingshan firmly affirmed.
Jiang Huanxi tightened his arms in his arms again.
It is snowing outside the window.
Xue Man does not come into the house.
But in this early winter, among the pre-reviewed papers on arXiv, there is an extra paper waiting to be discovered by someone who is destined to do so, a paper that will make people think that the author is amazing and talented. paper.
《Induced subgraphs of hypercubes and proof of the Sensitivity Conjecture》
Proof of the sensitivity conjecture of Boolean functions.
Xu Qingshan was not stingy about giving him credit.
He generously gave them two.
Compared with their role in the paper, this can indeed be regarded as generous.
As for whether such a division will weaken Xu Qingshan's influence?
No.
Not to mention that Xu Qingshan himself does not lack this paper, even though this paper has a considerable influence in the field of computer science.
Judging from the resume of the research team, everyone in the know knows that Xu Qingshan is definitely in charge of this paper.
Because only he has the precedent of ICML summit.
Xu Qingshan did not want to be stingy with these two girls in terms of research results from the beginning.
After all.
If you feed the cows and horses first, you won’t be afraid that the cows and horses won’t be able to run!
(End of this chapter)