Chapter 189: Entered the wrong house?
April 5, 6 a.m.
Xu Qingzhou carried his suitcase downstairs, preparing to leave the city where he had stayed for seven days. Academician Xu and Brother Zhao Zhenglai had two seminars and had to wait two more days before leaving, so he was alone today.
To his surprise, a familiar blue pickup truck was parked at the door.
"Mr. Zhao told me you were leaving this morning."
Kathleen shook the keys in her hand and smiled softly: "I think you must need a car to take you to London now."
"Thank you." Xu Qingzhou thanked him without being polite.
The two get in the car.
The roar of the engine sounded, and the blue leather rushed towards London.
Kathleen's tone was somewhat resentful: "Xu, I left you my phone number, but you don't seem to have called me once."
"Unfortunately, we are quite busy during this period." Xu Qingzhou felt helpless.
Kathleen said: "To express my apology, maybe you can look at the prime number question in front of you. You were originally going to ask the question that day, but the Irishman beat you to it."
Xu Qingzhou picked up the manuscript paper, which was about the regular intervals of prime numbers in Kramer's theorem, which involved the properties and application of the f(p) function.
"The main function of the f(p) function is to relax the upper bound to C×(logp)^α"
40 minutes passed.
London Heathrow Airport.
Xu Qingzhou let out a long breath and looked at Kathleen with lingering fear. It took Senior Brother Zhao an hour and she took 30 minutes. You can imagine how fast it was.
There was a hint of cunningness in Kathleen's eyes as she thought she was letting out a willful breath.
"Thank you for sending me here. I will buy you a drink next time." Xu Qingzhou sighed secretly in his heart. He was careless. Of course, when he knew that she was the owner of this wild pickup truck, he should have thought that she was not a good girl.
"I remember this agreement."
"Well, bye."
"goodbye."
Xu Qingzhou had just taken a few steps when Kathleen's voice came from behind, "Hi, Xu, I have one last question."
Xu Qingzhou turned around, met her gaze, and said with a smile: "The proof is out."
After saying that, he waved his hand and entered the airport security checkpoint.
Looking at the figure disappearing from the security checkpoint, Kathleen's blue pupils flashed with a different light, and she smiled lightly. He really knew what he wanted to ask.
Unfortunately, he already has a lover.
At 9:50 in the morning, after sending the last message to Song Yao, Xu Qingzhou got on the plane and headed home.
The majestic urban agglomeration gradually shrank, and after the plane stabilized, Xu Qingzhou was a little bored, so he simply took out the notes he had taken during the report meeting. Although he did not participate in the last two days of the report meeting, just in the previous time, he I just wrote down most of the contents of my notebook.
Have relevant knowledge of Dirichlet L function.
There is also Professor Maynard's idea about the interval of prime numbers, how he proved that there are infinite pairs of prime numbers whose intervals are less than 600. Of course, the improvement is still Zhang Yitang's method, which is of no use to him now.
After all, the twin prime number conjecture, no, it should be called the twin prime number theorem now, has been proven.
In addition to these, there are also things in the field of analytic functions, analysis in the complex number field, period exploration on analytic functions, etc.
At the report meeting, everyone discussed the most cutting-edge things, a collision of ideas, and a burst of inspiration.
Participating in such seminars is indeed much better than working behind closed doors.
Xu Qingzhou looked away from his notebook and looked out the window, his thoughts gradually wandering, and he began to think about the next task.
The twin prime number theorem is solved, next is the Polignac conjecture.
This conjecture means that for all natural numbers k, there are infinitely many pairs of prime numbers (p, p+2k).
If you are a little unfamiliar with the name of this conjecture, you must have heard of its special form, that is, k=1.
When k=1, this conjecture is transformed into the twin prime conjecture.
He has already proved the form of Polignac's conjecture k = 1, so there is no reason not to continue studying it.
However, challenging mathematical conjectures is just a small goal. He does not intend to start immediately. He will first complete the physical experiment at hand and read some books to replenish his brain.
With a connecting flight in Warsaw, 12 hours passed in this way.
Read information, sleep, transfer, rest, read information, sleep. The plane landed at 6:10 am Kyoto time.
Xu Qingzhou shook his head, sighing that he finally returned to a familiar land, especially the Chinese used by people around him, which made him feel more friendly.
He sent a message back to Song Yao, saying he would arrive in an hour. He pushed his suitcase towards the airport, took a taxi and went straight to Yandongyuan Community.
At 7:30, Xu Qingzhou got off the bus with his suitcase.
In the morning, the warm sunlight shines down. Although the branches of the trees add a little green, they are still bare. The gray walls reflect the mottled light and shadow of the sunlight penetrating the branches.
Finally came back.
When I go to London, I always have a feeling of being light and not even touching the ground.
Xu Qingzhou squinted his eyes, enjoyed the morning sunshine for a while, took a deep breath, and walked towards Building 4, dragging his suitcase.
505.
The door was open a crack, and Xu Qingzhou pushed it open directly.
Um?
Looking at each other.
To be more precise, it was eye-to-eye contact with a cat.
"Meow~"
"Sorry, we went to the wrong place." Xu Qingzhou was stunned for a moment, then came back to his senses, apologized to the cat, and left with his suitcase.
"Meow~"
Outside the door, Xu Qingzhou was still smiling bitterly, thinking that he must be too tired during this period and couldn't even find his home.
But he looked around, and it was right here!
505, that’s right.
Damn it, you can’t even go to the wrong building?
Zhi~
Just when Xu Qingzhou was doubting himself, the door was pushed open again.
A familiar and beautiful face appeared in Xu Qingzhou's sight. She had a high ponytail, an apron hanging on her body, and her hands were wet. It looked like she had just come out of the kitchen after washing her hands.
Seeing the boy's strange expression, Song Yao felt funny in her heart. The effect was good, she was shocked.
"What are you doing? Come in."
"oh."
Xu Qingzhou followed Song Yao in obediently. The civet cat squatted in front of the cat food plate, staring at him warily, as if worried that he would steal its food.
It was only when he entered the living room that he noticed that several dishes were already placed on the table, including twice-cooked pork and stir-fried seasonal vegetables
My dear.
Taking back what I just said, now I feel even more illusory that my feet are not touching the ground.
The campus beauty of Song University turned into a snail girl?
Song Yao saw this guy standing there again and reminded him: "Wash your hands and eat."
"Oh, okay." Xu Qingzhou nodded, and just as he was about to wash his hands, he murmured: "It's morning now."
Song Yao nodded: "Well, didn't you say you wanted to eat white rice some time ago?"
"It seems so"
Xu Qingzhou recalled that he seemed to have complained that Western food was unpalatable, but this scene was still a bit dreamy.
With countless doubts, he washed his hands and went into the kitchen to help Song Yao bring out the tomato and egg soup.
So, at the dining table of 505, two young people started eating a strange breakfast.
Xu Qingzhou took two bites of rice and finally couldn't bear it anymore. He put down his chopsticks and said seriously: "I have a question."
"Um?"
Song Yao nodded, knowing that she could surprise Xu Qingzhou.
Xu Qingzhou looked serious and said, "Tell me, which store did you package these dishes from outside?"
"Xu Qingzhou!"
(End of chapter)