Chapter 154: Click on me? Yes, Xu Qingzhou plans to strengthen his studies in the field of number theory. Number theory is a theory that studies the properties of integers. The basic elements of integers are prime numbers, so it can be said that the essence of number theory is the study of the properties of prime numbers. To study prime numbers, we cannot do without various conjectures about prime numbers. Cramer's conjecture is a, no, it should be called Cramer's law now. In addition, there are the Goldbach conjecture and Fermat's Last Theorem, two of the world's three major mathematical conjectures, and the Riemann hypothesis, one of the seven major problems of the millennium. These are all top-level mathematical conjectures, each of which is extremely difficult. Xu Qingzhou was not so stubborn. In his opinion, solving mathematical conjectures was like leveling up by killing monsters. If he rushed right after the ultimate boss, he would only die without leaving any trace. Solving these top-level conjectures is the job of mathematics enthusiasts among the public. This is not a joke. Amateur scientists have little interest in the third and fourth level mathematical problems. They study the Goldbach conjecture, the four color conjecture and the like. Some even want to disprove Fermat's Last Theorem which has already been proven. Even if Xu Qingzhou had these things hanging on him, he didn't dare to think about them at the moment. He turned on his computer and found the paper he had read before going to bed last night, Zhang Yitang's "Bounded Distances Between Primes", which was a paper on twin primes published in the "Annals of Mathematics" in 2013.
Yes, let’s not worry about the speculation about the difficulty of hell for now. These things are like castles in the air to Xu Qingzhou, they can be seen but not grasped. For the third tier, the twin prime conjecture can be tried. Twin primes refer to pairs of prime numbers whose difference is 2, such as 3 and 5, 5 and 7, 11 and 13... They can be described as follows: there are infinitely many prime numbers p such that p + 2 is a prime number. This paper proves the weakened form of the twin prime conjecture, that is, it is discovered that there are infinitely many pairs of prime numbers whose difference is less than 7000 million. It is also the first time that someone has proved that there are infinitely many pairs of prime numbers whose interval is less than a fixed value. 7000 million and 2 seem to be far apart, but for analytic number theory, it is the difference between 0 and 1, from nothing to something, or in other words, it allows mathematicians to go from fishing for a needle in a haystack to fishing for a needle in a pond, or even fishing for a needle in a swimming pool or a bowl. Taking a deep breath, Xu Qingzhou took out his notebook and began to organize the information he had seen recently. At first glance, it seems very difficult. Xu Qingzhou stayed at home all day. The next afternoon, he received a call from Guo Ziyang, asking him to go online together. Xu Qingzhou refused because playing games was boring. However, he thought about it and decided that if he stayed at home all the time he would be criticized by Ms. Wang, so he might as well ask Guo Ziyang what he really thought. So he asked Guo Ziyang if he wanted to come out for dinner and he would treat him. When Guo Ziyang heard Xu Qingzhou say he would treat them, he agreed without even thinking. Xu Qingzhou said hello to Ms. Wang and was about to go out when he received a message from Song Yao. Song Yao: "I heard there's a snack street opening on College Street. Let's go there tonight?" Xu Qingzhou typed: "Not today, I have to go find Guo Ziyang to talk about Ding Jiahui." Song Yao: "Okay, tell him to be brave and act like a man." Xu Qingzhou looked at the message sent by Song Yao with a strange expression. Why did he feel like she was pointing at him? Call ~ I must be overthinking it. After saying this silently, he put away his phone and went out. At 5: in the afternoon, Xu Qingzhou met Guo Ziyang at the intersection. Compared with the last time they met, this guy seemed to be much more mature, at least he didn't look so childish, which made Xu Qingzhou smack his lips. Love really can make people grow. Just as he was sighing with emotion, Guo Ziyang's expression changed, and he pulled his hand, "Zhou Zi, come on, let me get a taste of the God of Learning."
As he said this, he even picked her up. "Get out of here, I'm not gay." Xu Qingzhou quickly stepped away, feeling very disgusted. Guo Ziyang looked resentful as he followed Xu Qingzhou toward the street. After walking for a while, he came closer and asked expectantly, "Zhouzi, what kind of meal are we having?" "We're here." Xu Qingzhou stopped in front of a noodle shop. "Noodles?" Guo Ziyang's mouth twitched. Xu Qingzhou walked in first, "Forget it if you don't want to eat." "Eat!" In the noodle shop, the two of them ordered a bowl of noodles each, and then sat down and chatted. Guo Ziyang asked curiously: "You stayed at home all day yesterday?" "Well, I plan to study something related to number theory." Xu Qingzhou nodded. "Awesome." Guo Ziyang gave a thumbs up. He used to be envious, jealous and resentful, but now he is completely convinced. Xu Qingzhou said: "There is no need to talk about things that are well known." Guo Ziyang complained in his heart that Zhouzi had become even more aggressive since they hadn't seen each other for a while. Xu Qingzhou glanced at Guo Ziyang who was standing opposite him and asked the main point: "Do you really not like Ding Jiahui anymore?" Guo Ziyang scratched his head and said sheepishly: "I like it, but... I feel a little embarrassed." "What an embarrassment." Xu Qingzhou rolled his eyes and complained, "It's just a failed confession. If you get divorced in the future, you won't be able to live like this." Guo Ziyang: "Fuck, Zhouzi, don't curse me!" Xu Qingzhou curled his lips and thought to himself, if you continue like this, I'm not really cursing you, I'm just giving you a warning in advance. "Wait a few more days. It will still feel strange to see her." Guo Ziyang sighed. Xu Qingzhou smiled and said, "Ding Jiahui likes you. At this time, you just need to work harder." "Really?" Guo Ziyang was skeptical. The last time they came back together, Ding Jiahui hardly spoke to him. It was obvious that she wanted to keep her distance. "Yes, Song Yao said it herself." After saying this, Xu Qingzhou stopped. Even his own cement seal had loosened, but he was still acting as a military strategist here. "Xu Qingzhou, Guo Ziyang." Just at this moment, a voice rang out. Xu Qingzhou turned around and saw a beautifully dressed girl standing behind them. Looking at Tian Shuang, Guo Ziyang was surprised: "You really came?" Xu Qingzhou looked at Guo Ziyang inquiringly. Guo Ziyang explained: "Just now she asked us what we were doing, and I said we were going to Nanlin Road to eat noodles."
"I just happened to come here to buy some things, but I didn't expect you guys to be here." As she spoke, Tian Shuang had already sat down on the stool next to Xu Qingzhou, raised her hand to touch her hair, and said, "Xu Qingzhou, you returned to Rongcheng without telling your old classmates." Tian Shuang was dressed very delicately, and there was a hint of mischief in her manners and speech, which made her very approachable. "I just got back too." Xu Qingzhou smiled faintly, haha, it just happened, there are not so many just happened. Girls like Tian Shuang are beautiful, proactive, and graceful. Many boys have no resistance to such girls. Moreover, her family is well-off and quite wealthy, which allows her to dress better than most girls of the same age. For example, at the last high school reunion, many girls' clothing and makeup were at the stage where high school and college were just blending, and they looked weird. Tian Shuang really came to find Xu Qingzhou, and her purpose was very clear, which was to build a relationship. She knew so many boys, but only an outstanding boy like Xu Qingzhou could be her boyfriend. But Xu Qingzhou just wouldn't listen. (End of this chapter)