Just turned over a new leaf and became a wise and intelligent student

Chapter 197 You, a prospective college student, want to propose the weak twin prime conjecture? !
"Is it Xu Qingshan?"

Jiang Jingyi at the side interrupted and asked as if a key word was triggered.

"Can you take me with you? I'm actually quite interested in mathematics."

Jiang Yuhua looked at her little niece with a strange expression.

Didn't you just say that you were not good at math, couldn't understand it, didn't want to learn math so you chose journalism? How come you suddenly said you were interested in math?
Jiang Jingyi bit her lower lip with her pearly teeth and stared at Jiang Huanxi.

She knew that by doing this all the time, she would be able to make Sister Huanxi compromise. She didn't care about math or not, she only cared that she could still meet Xu Qingshan.

She doesn't believe it.

She didn't believe that Xu Qingshan's care for her in the past two years was fake, and she also didn't believe that Xu Qingshan really didn't have her in his heart.

She didn't believe that now that she had turned back and wanted to be with him, Xu Qingshan's heart would be as hard as stone and she couldn't warm it up.

"No."

Jiang Huanxi looked at Jiang Lihua, then at Jiang Jingyi, and shook his head firmly.

"why?"

Jiang Jingyi stared at Jiang Huanxi with dissatisfaction in her eyes.

"If you want to see him, you can make an appointment with him yourself. I'm going to discuss mathematics with him, and I don't want him and me to be disturbed."

Jiang Huanxi spoke seriously, word by word.

"Then why are you willing to let my aunt go?"

Jiang Yuhua held a Taiyaki in her mouth, watching the two juniors competing against each other. She was unable to comprehend what was happening for a moment, and when she was suddenly reminded of what Jiang Jingyi said, she was also a little dazed.

what?
Did I eat myself while eating the melon?

"Because my aunt has a PhD in mathematics from Princeton, maybe she can help."

Jiang Huanxi frowned. She didn't like her sister getting angry with her and acting like a spoiled brat.

Qingshan said that he should be more confident.

"Besides, I didn't say that I must take my aunt with me. I will respect his opinion. I will only take my aunt with me if he agrees."

Jiang Huanxi said persistently. Although she was explaining, her aura was very strong.

She was not like an ostrich who would bury her head in the ground and pretend not to see anything when encountering problems. She was very determined at this moment.

Even Jiang Lihua and Jiang Yuhua on the side looked at each other subconsciously.

As elders who care very much about the two children, they could naturally notice the changes in Jiang Huanxi.

If it were under normal circumstances, even if Jiang Huanxi disagreed with Jiang Jingyi's request, he would never refuse so bluntly in public and in front of his elders, not giving Jiang Jingyi face.

"Why are you all doing this to me?"

Jiang Jingyi's nose felt sore.

Xu Qingshan has changed, and Sister Huanxi has also changed.

All these beautiful things, all these pamperings, should have been used for myself, why did everything change in just one year?
She couldn't figure it out.

"Jiang Jingyi!"

Jiang Lihua frowned and suddenly spoke.

When Jiang Huanxi rejected Jiang Jingyi just now, she didn't say anything because she also loved Jiang Huanxi.

Normally Jiang Huanxi is always gentle and Jiang Lihua will support her. But today Jiang Huanxi became inexplicably tough. Even though it was her own daughter who was being scolded, Jiang Lihua felt very relieved.

"Don't shed tears outside."

Jiang Lihua looked at Jiang Jingyi.

Jiang Jingyi turned around and looked at her mother unconvinced.

"You don't love me at all! You blamed me even when I didn't get into Kyoto University. No matter what I did, it was wrong! You didn't let me choose when I wanted to, and you forced me to choose when I had no choice."

Jiang Jingyi's tears flowed down, and she spoke loudly to her mother, as if accusing her.

She couldn't control her emotions, and the grievances continued to grow in her heart.

Jiang Lihua was so angry that she was shaking and she raised her right hand.

Jiang Jingyi stared, raised her face, and waited for Jiang Lihua's slap to fall.

But the next moment.

"Sister, what are you doing?"

Jiang Yuhua stuffed all the snacks in her arms into Jiang Huanxi's arms, and walked forward to grab Jiang Lihua's hand.

"Listen to what she said!"

Jiang Lihua was also very angry. She looked at the eyes of passers-by on both sides and felt even more uncomfortable.

She has always hated losing face in public.

But Jiang Jingyi embarrassed her time and time again.

“We’ll talk about it when we get back, we’ll talk about it when we get back.”

Jiang Yuhua pushed Jiang Lihua and pulled Jiang Jingyi towards where the car was parked, while Jiang Huanxi followed behind in a daze.

The original conflict between Jiang Jingyi and Jiang Huanxi turned into a conflict between Jiang Lihua and her daughter.

After returning home, the uncle and aunt began to comfort the mother and daughter and took them away to talk. Then Jiang Huanxi went to the rooftop with her aunt to chat.

"Aunt, am I doing this wrong?"

Jiang Huanxi asked hesitantly.

"Xiaoxi, if you knew that tonight would be like this and were asked to choose again, would you still reject Jingyi?"

Jiang Yuhua did not answer Jiang Huanxi directly. Instead, she turned around and asked Jiang Huanxi with a lollipop in her mouth.

"meeting."

Jiang Huanxi did not hesitate this time and nodded seriously.

"great."

Jiang Yuhua said.

"You're not wrong, you did the right thing."

“Learn to say no, say no to things you don’t want to do, even if it’s to your loved ones.”

Jiang Yuhua and Jiang Huanxi were chatting.

Jiang Huanxi was listening to Jiang Yuhua's life teachings, but in her heart she was thinking about the words that Xu Qingshan had taught her. For some reason, she felt sweet in her heart.

When Jiang Yuhua saw that Jiang Huanxi's originally sad face was smiling again, he felt that it must be his own credit and decided to add two more chicken legs for himself for lunch tomorrow.

Unfortunately, she had no idea that her niece was listening to her and thinking about someone else.

Isn't this a kind of NTR?

"By the way, the boy you are going to meet tomorrow, Jingyi likes him, right?"

"probably."

Jiang Huanxi nodded.

Jiang Jingyi has told herself more than once that she wants Xu Qingshan.

"how about you?"

"Me too. Hmm? No."

Jiang Huanxi answered subconsciously, but before she could finish her words, she saw her aunt's half-smiling eyes. Her blood suddenly rushed to her head, and her whole body was like a steam engine. She quickly lowered her head to deny it, but even under the moonlight, the blush on her face was very obvious.

"You are 18 years old, what are you embarrassed about?"

"Face your feelings."

"Didn't he promise that I can go with you tomorrow? Then I will help you check. Don't worry, I have a good eye for people! I will never make the wrong choice."

Jiang Yuhua said openly.

"Then why haven't you ever been in a relationship, little aunt?"

"You know that only those who have never been in a relationship know better about love, right?"

"Qingshan and I are not planning on having a romantic relationship."

"That means one of you two hasn't gotten the hang of it yet, and I think it's you."

"We were really just discussing math! Number theory!"

"Oh, that's just an excuse. You're only 18, it's good enough that you can understand what number theory is."

“He’s awesome!”

"Tsk, you're already protecting me before we even start dating."

"I didn't! I was telling the truth! He's really awesome!"

"Ah, yes, yes."

If there are people who can make Jiang Huanxi excited, there are probably only a few in the world, but Jiang Yuhua is definitely one of them.

Xu Qingshan also counts.

The emotions of Jiang Jingyi and Jiang Lihua, mother and daughter, had calmed down, but they were still in a cold war.

The next day, Jiang Yuhua accompanied Jiang Huanxi to the tea restaurant to meet Xu Qingshan.

In the Genji Tea House.

Xu Qingshan ordered a cup of Little Bear iced lemon tea. While sipping the lemon tea, he looked at the draft spread out on the table and calculated carefully with a pen.

"Qingshan!"

Xu Qingshan heard the voice and looked up.

Jiang Huanxi was seen jogging towards him with a bag in her hand and a rosy face, followed by a mature lady in a leather jacket and sunglasses.

This person should be Jiang Huanxi's aunt.

The female PhD who studied mathematics at Princeton.

just
This appearance doesn't look like a normal female doctor, right?

He was wearing a leather jacket, jeans and sunglasses. He had a slender figure, a perfect waist-to-hip ratio, and graceful curves that were not abrupt, but he was tall and had long legs, which made him look very three-dimensional.

Judging from her figure, this girl must have been to the gym quite often.

But this look makes him look more like someone who rides motorcycles or plays rock music, rather than someone who does math.

"Little ostrich, are you here? This is Aunt Yuhua, right?"

Xu Qingshan put down his pen, stood up and greeted him with a smile.

If it was just Jiang Huanxi, he could be more casual, but the other person's elders were also here, and from Jiang Huanxi's perspective they were here to help, so Xu Qingshan naturally had to appear more attentive.

"Are you Xu Qingshan?"

Jiang Yuhua looked at the tall, sunny and handsome boy in front of her, her eyes rolling behind her sunglasses.

"Hi aunt."

"What aunt? Call me sister!"

"Um, sister?"

Xu Qingshan didn't know what was wrong with these little aunts. They all just wanted to hear him call them sister.

If it was Xu Qingshan from his previous life, he would not even call her sister when they met, but would directly call her beauty. But the problem is, these aunts were in front of Tong Tong and Jiang Huanxi!
It's really frustrating.

"Come, sit down, order whatever you want to drink or eat."

As Xu Qingshan spoke, he tidied up the draft on the desk.

"Anything? Really?"

Jiang Yuhua looked around at other people's dishes and sat down. Jiang Huanxi also sat down and looked at his abstract aunt helplessly.

"Don't worry, sister. After all, you are here to give us guidance today."

Xu Qingshan said very patiently.

"it is good!"

Jiang Yuhua stood up and moved his butt to sit at the table next to him.

"Ok?"

Xu Qingshan didn't understand.

"You guys go ahead and have your conversation. If you need my help, call me. I'm afraid that if there are too many orders later, the table won't be able to accommodate them. I'll order over here."

Jiang Yuhua’s reasons were very powerful. Xu Qingshan smiled helplessly and looked at Jiang Huanxi.

"Then little ostrich, it's our turn."

"What's that little ostrich?"

Jiang Huanxi gently touched Xu Qingshan's feet, with a hint of embarrassment on her face.

"Aunt is here."

"Okay, okay, come on, Huanxi, take a look at this first."

"it is good."

"I ordered you a cup of bear ice lemon tea, the same as mine. It's delicious."

"Good~"

Jiang Huanxi took over the draft that Xu Qingshan had been writing for a while and began to read it.

The two chatted while looking at the draft.

"Actually, I asked you to continue studying number theory because I wanted you to study the twin prime conjecture with me. Twin primes, also called twin primes, refer to a pair of prime numbers with a difference of 2, like 3 and 5, 5 and 7, 11 and 13, 17 and 19, etc. These are all twin primes."

"Uh-huh."

Jiang Huanxi listened to Xu Qingshan's words and nodded seriously.

She was not clear about Xu Qingshan's goal and thought that Xu Qingshan just wanted to take her to understand the twin prime conjecture.

In order to let Xu Qingshan know that he now knows a lot about number theory, Jiang Huanxi immediately continued.

“目前最大的孪生素数是3756801695685×2^666669-1和3756801695685×2^666669+1，这两个数都有200700位，孪生素数猜想是要证明是否存在无穷多对孪生素数。”

"Because the twin prime conjecture and the Goldbach conjecture are sister problems, many mathematicians hope to solve the Goldbach conjecture by solving the twin prime conjecture. Mr. Chen Jingrun also tried this route at the time."

Jiang Huanxi earnestly explained the knowledge he had mastered, and Xu Qingshan nodded approvingly.

Jiang Yuhua was waiting for the meal to be served, pouting and not interrupting.

What these two kids said was indeed correct.

But in the eyes of Jiang Yuhua, a future master in mathematics, this is just like a clever boy who wants to attract his daughter Huanxi to admire him by using the aspects that Huanxi is interested in.

What are twin primes?
Is it something that an 18-year-old little boy like you can solve?

Also researching~
Hum hum!
"However, the topic we are going to work on today is not the twin prime conjecture for now."

Xu Qingshan's next words made Jiang Yuhua stop her inner happiness and listen again.

"What we want to study is the weak twin prime conjecture."

Xu Qingshan explained.

"In 1849, French mathematician Alphonse Polignac proposed the Polignac conjecture, which states that for all natural numbers k, there are infinitely many pairs of prime numbers (p, p+2k)."

"When k is equal to 1, it is the twin prime conjecture, and when k is equal to any other natural number, it is called the weak twin prime conjecture."

"If we extrapolate from finite numbers to infinite numbers, we have reached the limit of using the sieve method."

Xu Qingshan quietly introduced the research progress in this area to Jiang Huanxi.

"In the 60s, Mr. Chen Jingrun used the sieve method to prove that there are infinite prime numbers p such that p+2 is the product of no more than two prime numbers. But the sieve method has its own limitations, and we certainly can't start with the sieve method."

Xu Qingshan's words made Jiang Yuhua's eyes gradually become serious.

This guy doesn't seem to be without something.

Also.

If this kid is really a good-for-nothing, how could Xiao Huanxi and Xiao Jingyi have a conflict over her?

interesting.

"So what we need to do is to deduce from infinity to finiteness to prove that there are infinitely many pairs of prime numbers whose difference is less than a finite number."

“This finite number can be any large. As long as we take this step from 0 to 1, the rest of the journey will be easier.”

Xu Qingshan's words rang like thunder in his ears.

Jiang Yuhua ignored the waiter who was serving the dishes, and sat back down quickly, took off her sunglasses, stared at Xu Qingshan, and grabbed the draft on the table to look at Xu Qingshan's previous ideas and the preset derivation and proof process. She was surprised and her mouth was wide open.

"no?"

"You, a prospective college student, want to push the weak twin prime conjecture?"

"I mean, you're going to prove a hypothetical hypothesis?"

Jiang Yuhua had heard of Xu Qingshan's idea.

This idea was proposed by an American mathematician a few years ago, but as American number theorist Dorian Goldfeldt said, "They assumed a conjecture that no one knows how to prove."

Now, a student who just graduated from high school said in front of him that he wanted to prove this conjecture.

"Ah."

Xu Qingshan looked at Jiang Yuhua in surprise.

Hey, this girl is also very pretty. The Jiang family has really good genes!

Jiang Yuhua's face darkened a little.

Boy, you're bragging too much!

(End of this chapter)