Xueba's doctor's wife

Chapter 238 There is a little gap with Professor Fang (13, please subscribe)

How happy is Yu Qianqian at this moment?
Zhang Yan didn't know and didn't want to know. At this moment, she only knew one thing. That was to quickly find a man and get rid of being single.Since there are no classes today, Zhang Yan stays in her small apartment, lying on the sofa with her tablet computer, reading mathematics literature.

As an older single young woman, her life is still very monotonous, almost in a state of two points and one line, either staying at school to work, or staying at home to rest, of course, occasionally going out shopping with her two good sisters , but it is more difficult to make up the time.

Yu Qianqian was accompanied by Professor Fang every night, not to mention how rich her life was. As for Ruan Xiaomei, she never lacked high-quality suitors, handsome and rich.

"Hey"

"Life is boring!" Zhang Yan put the tablet computer on the coffee table, hugged the back of her head, shaking her legs rhythmically, while thinking about something, suddenly the phone rang, interrupting her moment of daze.

Pick it up and look. It turned out to be my senior brother calling.

Speaking of my senior brother, to be honest, he is a senior professor in the Department of Mathematics of Peking University. You must know that Peking University is as famous as Tsinghua University, and it is the most advanced academic place in the country. As a senior professor at Shangzheng, in addition to needing a strong network, his own strength is also indispensable.

My senior brother has made great contributions in the field of mathematics, but he is rather arrogant. To put it bluntly, he is a bit arrogant.

"Hey?"

"Brother, what's the matter?" Zhang Yan asked casually.

"Swallow."

"I just finished a very powerful mathematics research recently, are you interested in reading it?" A man's voice came from the other end of the phone, not very young, with a hint of deep and mature, but not lacking in magnetism.

Zhang Yan frowned, she really wanted to reject his kindness, but she was too embarrassed to do so. In fact, Zhang Yan knew very well that her senior brother liked her very much. Although she had met several times and had a few girlfriends, In the end, nothing was left, and when asked the reason, he always said it was not suitable, but in fact Zhang Yan knew that he was waiting for his reply.

but
No feeling is no feeling.

Feelings are meaningful only if they go in both directions. Of course, apart from the lack of feeling, there is another very important factor, that is, not being handsome enough, not even one-tenth of Professor Fang Hao's.

"Oh"

"Then send it over." Zhang Yan reluctantly agreed.

"okay!"

"I sent this to your mailbox. After you read it, let me know what you think." The man opposite hung up the phone happily.

In a short while,
Zhang Yan received an email, downloaded an attachment from it, and then opened it to read. Xu. Zhang Yan's expression became a little dignified, and an unspeakable surprise gushed out from the depths of his heart.

The four-color conjecture, one of the three major modern mathematics problems in the world?
After Zhang Yan saw the introduction of the article, she was almost dumbfounded. The four-color problem is a topology problem. Its rough description can be traced back to more than 160 years ago, and the problem is also very simple. Any map can only Using four colors allows countries that share a common border to be colored differently.

That is to say, a map only needs four colors to mark without causing confusion.

If the plane is arbitrarily subdivided into non-overlapping areas in mathematical language, each area can always be marked with one, two, three, four. One of these four numbers will not cause two adjacent areas to get the same number.

Like Fermat's last theorem, this seemingly obvious conjecture soon entered the field of mathematics. Although this problem was proved by computers, the problem is that if such a problem uses some kind of clever new Thinking to solve it is very remarkable.

If there is only one solution and it is used repeatedly, it can only prove that the solver is very smart. After all, using a computer to exhaustively enumerate all the current configurations to prove this conjecture, the mathematical proof cannot be accepted by the majority of mathematicians.

The essential,

The coloring number and graph structure problems behind the four-color problem have not been solved, so the mathematical community urgently needs a pure artificial mathematical proof to prove the four-color problem, as well as the coloring number and graph structure problems behind the four-color problem .

However.
My senior brother actually tried it, not only tried but also published a paper on it.

Speak the truth,

Zhang Yan is a little unbelievable. If the author of this paper is her male god Fang Hao, he may be full of expectations, but it happens to be a suitor he doesn't like. From an emotional point of view, he feels that there are many loopholes in it.

However, with such prejudiced emotions and opinions, it is a big taboo to read a mathematics article. Zhang Yan tried her best to adjust her mood to get herself back on track, and then she plunged into the content of this article.

In the beginning,
Zhang Yan was still relatively calm and calm, but as the content continued to deepen, gradually. As an associate professor in the Department of Mathematics of Jiangda University, he began to feel powerless. In addition to being shocked, his face was full of doubts and incomprehension.

She admits that there is a big gap between herself and her senior brother, but she can't understand it, right?
In the continuous exploration and research, Zhang Yan gradually understood the content of his senior brother's article. He just provided a way of artificial proof, and then... there is no more.

This point is quite similar to Professor Fang Hao's paper, but compared to his senior brother who really only provided proof ideas, Professor Fang Hao at least pushed the Kratz conjecture forward by 100 years, while his senior brother was in the same place steps.It's just a small step forward.

After hesitating,

Zhang Yan dialed the number of her senior brother, and the call was connected soon.

"I read Shi Ge's paper, which is very similar to that of Professor Fang Hao from our school. They both provide a way of proof." Zhang Yan said indifferently: "However, what do you think of your mathematics paper?"

at this time,

The man on the other end of the phone asked urgently, "What?"

"I feel like" Zhang Yan pursed her lips. She didn't want to talk too hard, she pondered for a long time, and said silently: "There is a slight gap with Professor Fang Hao in our school, just a tiny gap."

People who are engaged in academic research in China can't avoid a topic, that is Fang Hao. Zhang Yan's senior brother naturally knows Fang Hao. When he heard his crush say that he is not as good as Fang Hao, he felt a little bit uncomfortable in his heart. Convinced, of course, usually a little unconvinced.

"swallow!"

"I recognize Professor Fang Hao's academic ability, but if you say that my thesis is not as good as that of Professor Fang Hao, I will not admit it." Zhang Yan said righteously.

Zhang Yan rolled her eyes, and secretly muttered in her heart, I am enough, old lady, if it weren't for the fact that you are my senior brother, I would have demoted you to nothing, and you still refute me?
"Maybe." Zhang Yan responded casually.

Zhang Yan's senior brother also heard his junior sister's perfunctory, and was even more unconvinced for a while, and said seriously: "Swallow, do you know Professor Fang Hao?"

"I know you."

"What's wrong?" Zhang Yan asked suspiciously.

"I hope you can give my research paper to Professor Fang Hao, don't worry. I have already stored it in arXiv, and it will not be stolen by others." Brother Zhang Yan said.

"."

"Professor Fang Hao won't plagiarize your thesis." Zhang Yan said helplessly: "Okay, okay. I will help you to ask later."

"thanks."

After Zhang Yan's senior brother thanked him, he hesitated for a long time and asked softly, "When are you coming to the capital?"

"No." Zhang Yan refused decisively.

"Then shall I come to your place?" Zhang Yan's elder brother continued to ask without giving up.

Zhang Yan sighed, and said earnestly: "Brother, forget about me, we are impossible, you will meet someone more interesting than me, and then forget about me when the evening glow fades away."

words fell,

Hang up directly. Looking at her mobile phone screen, Zhang Yan pursed her lips.

If you hadn't met Professor Fang before, maybe you really had to make do with it. Anyway, life after marriage is nothing more than daily necessities, rice, oil, salt, soy sauce, vinegar and tea. Call it a beautiful, sweet honey.

No!

My old lady can't let it go like this!

this day,
Fang Hao wasted all his time on the standard model, and the subject of cooperation with Professor Aibut was officially completed. In order not to make Professor Aibut feel that he was paddling, Fang Hao planned to give him a booster first. The theoretical framework is given out.

In fact, Fang Hao is not very interested in high-energy physics, and works entirely for work.

"Oh, I'm so exhausted!" Fang Hao stretched his waist, looked at the time and it was almost time to get off work, then he tidied up his desk and desk, and walked out of his office slowly.

Nowadays, Fang Hao does not need to come to the institute every day to a large extent, but once the habit is formed, it is difficult to be changed. Even as the director and deputy director, he still comes to work rain or shine.

"Director Fang."

"Director Fang."

sometimes,
This is how the invisible estrangement came into being. My former colleagues became my leaders, and I was still a little bit upset in my heart. Fang Hao understood their emotions very well, and just smiled and nodded in response. He didn't want to have anything to do with them. It's hard to figure it out.

"Hey?"

"Zhang Yan's treat?"

"The three of you are here?" Fang Hao said helplessly, "Then it would be inappropriate for me to go?"

"You must come. Zhang Yan is inviting you, and Xiaomei and I are incidentally." Yu Qianqian said softly, "Hurry up, hurry up. The old place is waiting for you. You alone."

"Oh come."

As soon as Fang Hao walked out of the door, he received a call from Yu Qianqian, informing him that someone was invited for dinner. Although he didn't really want to go, but the queen at home had spoken, this order had to be obeyed. After all, she would control thunder and lightning from time to time.

Soon came to a certain street, and saw Xiao Aojiao's Audi RS7 in the distance.

open the car door,

Sitting in the co-pilot seat, Ruan Xiaomei and Zhang Yan in the back row began to bombard with words.

"Professor Fang? What time was it last night?"

"Professor Fang? It was exciting last night with our family's Qianqian, wasn't it?"

"Professor Fang? Were you tired last night?"

last night
It seems that the two are very interested in what happened last night.

Fang Hao smiled awkwardly, silently glanced at Yu Qianqian beside her, and motioned to come and save me.

"oops!"

"Are you bothered?" Yu Qianqian said angrily, "If you ask me every day, my ears are getting callused, especially Xiaomei. Sister Yanzi just ask. She has been single for so many years and has never tasted love. But you're asking too much."

Before Ruan Xiaomei could refute, Zhang Yan couldn't wait to say: "No. What do you mean? What do you mean you have never tasted love?"

"Isn't it?"

"Do you have a boyfriend?" Yu Qianqian looked at her curiously.

"."

"Let's drive!" Zhang Yan curled her lips and said angrily, "It's a bit annoying!"

Yu Qianqian smiled, started the car silently, and drove towards the destination. The three women chattered endlessly along the way, tormenting Fang Hao who was sitting in the passenger seat, and almost wanted to commit suicide by jumping off the car .

for a long time,

Finally arrived at a Thai restaurant.

The four sat in the corner. After Zhang Yan finished ordering, she raised her head to look at Fang Hao who was sitting opposite, and asked in a low voice after hesitating for a long time, "Professor Fang, how much do you know about the four-color theorem?"

"The four-color theorem?"

Fang Hao was stunned for a moment, and said casually: "It's so-so. Isn't it already proved by the computer? Although it used a very exhaustive method, the theorem can be regarded as proved anyway."

"Oh"

"However, I heard that someone gave an idea that can be proved manually." Zhang Yan said.

"what?"

Fang Hao looked at her in astonishment, and asked curiously, "Could it be fake news from the BBC?"

"no no."

"A real mathematical article provides a way of proof in this article." Zhang Yan said seriously.

words fell,

He hurriedly took out a tablet computer that he had prepared in advance from his satchel, handed it to Fang Hao, and said, "Professor Fang, take a look."

Fang Hao took the tablet computer handed over suspiciously, looked at the mathematics paper on it, and smiled helplessly: "You invited me to dinner, so you asked me to read this paper? Actually, you call me That’s fine, there’s no need to go to such a hassle.”

"Cannibals are soft-mouthed, but short-handed."

"Professor Fangfang, if you fool me casually, how would I know? I'd better invite you to dinner." Zhang Yan laughed.

Fang Hao shrugged, and looked at the content of the article expressionlessly. In less than 3 minutes, Fang Hao returned the tablet to Zhang Yan, and silently took a drink of a glass of lemonade.

"Professor Fang?"

"Is there any problem?" Zhang Yan asked eagerly.

For a time,

Yu Qianqian and Ruan Xiaomei looked at him together, with a hint of curiosity in their brows.

Fang Hao put down the water glass, and said casually: "It can't be said that it is useless, at least the format is quite standard."

PS: ask for a monthly ticket, ask for a recommendation ticket

(End of this chapter)