Chapter 340: Mathematics is not good, so I can only study physics At home, Xu Qingzhou played games with Guo Ziyang in the morning, and then stayed at home doing calculations. At 5 o'clock in the afternoon, he slowly went out to have dinner with the three Moriguchi who had been wailing in 101 for several days. Hotpot restaurant. As soon as Xu Qingzhou entered the private room, Xu Zhengyang narrowed his eyes and said, "Old Xu, our rule is that those who come late will be fined three glasses of wine first." "Why don't I know this rule?" Xu Qingzhou was not fooled. “Just passed.” "Okay, then should we include those who came late in the past? Old Xu, if I remember correctly, you were the last one in the previous few times." "This was just decided today. It didn't count before." "Who said that? Old Kong and Old Zhai and I have already agreed. It's okay. You can make it up tonight. I calculated for you. You have to drink 9 cups first." When Kong Xianbo heard that Xu Zhengyang had to drink 9 cups, he became excited: "That's right, Old Xu, you should drink first. After you finish drinking, Old Xu can drink." Zhai Ziqiang also nodded.
Xu Zhengyang: "Oh, do you really think I'm stupid, Lao Kong? Last time you were 20 minutes late, should you double that? And, Lao Zhai, you..." Now, the alliance of three people collapsed instantly. After some chatting and laughing, all the dishes were served and everyone started to eat. When I was a freshman, I usually drank in one gulp, just like Xu Zhengyang. He liked to pull people along and would not stop until he got them drunk. Now, drinking seems to have really become a way to liven up the atmosphere. Based on Xu Qingzhou's experience, when they get together again after graduation and work, they might drink until they vomit again. Of course, although both of them vomited after drinking, their conditions were completely different. The former was completely a teenager's mentality, just for fun, while the latter was probably more of a result of being beaten by society and lamenting the passing of time. After drinking for a while, everyone quickly started talking about future plans. According to the regulations of the School of Mathematics, we can choose our majors at the end of this semester. Kong Xianbo plans to major in mathematics and applied mathematics, Zhai Ziqiang wants to major in information and computing science, and Xu Zhengyang wants to major in statistics in the Department of Financial Mathematics. Kong Xianbo and Zhai Ziqiang both plan to pursue graduate studies. Xu Qingzhou looked at Xu Zhengyang, "Old Xu, what about you?" "Me?" Xu Zhengyang sighed, looking worried. "I don't really like studying, and I'm not as enterprising as you guys. I just need to get a bachelor's degree." Then he sighed again: "I'd better go back and inherit the family property, and collect rent when I have nothing to do." Xu Qingzhou and the other two clinked their glasses silently. Hehe, it’s finally my turn to show off. It’s not easy. Xu Zhengyang also picked up the wine glass and took a sip like a master. This was the confidence behind owning a courtyard house within the Second Ring Road. At 9 o'clock in the evening, a group of people came out of the hotel and walked slowly on the street. It was still chilly at night in March. The first one to run away was Xu Zhengyang, saying he was going to pick up Chen Shiqi. Xu Qingzhou was the second to leave. Zhai Ziqiang sighed: "Before we knew it, there were only two of us left."
Hey~ Kong Xianbo's phone rang with a message. He looked down with a slightly stiff expression, then looked up at Zhai Ziqiang: "Old Zhai, I have something to do. I may not be back tonight." "." On the road, Zhai Ziqiang stood blankly. At this moment, the light in his eyes seemed to have disappeared. Yandong Garden. Xu Qingzhou pushed the door open and entered the room. Song Yao had already finished her shower. She had her long, smooth hair draped over her shoulders, revealing her two white legs. She was sitting in front of the computer typing away. "I am back." I didn't drink much wine in the first place, and the little drunkenness I felt dissipated on the way. "Yeah." Song Yao said without turning her head. Xu Qingzhou was very conscious. He went back to the room to get some clean clothes and went to the bathroom to wash off the smell of alcohol. He took a shower and blew his hair. When Xu Qingzhou put down the hair dryer, Song Xiaohua had already started to tie her hair, her eyes were burning. Tonight is destined to be another sleepless night. Xu Qingzhou sighed secretly. The days passed, and it was already late March. When Song Yao came back from outside, she called her boyfriend who had been staying at home for four days, "Xu Qingzhou, change your clothes and go out for a run." Xu Qingzhou pulled his thoughts away from the complicated equation in front of him, nodded, and stood up. He had been stuck at home for several days, so it was time to go out for a run or two to relax. Although it was already spring, he wrapped himself thicker than in February. When the heating was turned off, the temperature in the house dropped suddenly. The second cat wagged its tail, ready to find the right moment to attack Xu Qingzhou's legs. Once the heating stopped, its original throne was abandoned, and now the warmest place was on the body of the biped. It circled around the two-legged beasts for a few times, and seeing that Xu Qingzhou and Song Yao had no intention of hugging it, it meowed twice and returned to its own nest. The two quickly changed into their sportswear. Before leaving, Song Yao saw that Xu Qingzhou looked a little tired, so she rubbed his face and comforted him: "Teacher Xu, it's not your fault that you don't have enough brain cells." "Why do I feel like you are scolding me?" "No." "Teacher Song, are you sure?" "Don't call me Teacher Song!" During this period, Xu Qingzhou used the bilinear oscillation integral estimate established by Lee to improve the square function estimate, thereby further improving the local smoothness estimate of the Fourier integral operator that satisfies the movie-type curvature condition. His current idea is to transform the square function estimate into an equivalent bilinear form so as to use the bilinear oscillating integral estimate. Everything seemed to be going smoothly, but suddenly it got stuck when transforming the bilinear terms that fall on the same scale into the standard case that appears in the lemma. In simple terms, Xu Qingzhou intends to complete a puzzle, and the lemma he completed a few days ago is the pattern that needs to be pieced together. Now, most of the pattern has been pieced together.
He had some fragments of "bilinear terms" in his hands, which were like two small pieces put together, but their size and shape might not exactly match the desired pattern. Now, we need to introduce a tool to scale these fragments or even change their shapes so that the puzzle can be completed. The problem is that Xu Qingzhou is now at a loss as to what to do with this tool. He has used up a lot of calculation paper, but still hasn't found the direction. He held his breath and calculated for three days, and then realized a fact: this time he was really stuck. The two went downstairs. The street lights on both sides were already on. Although the sun had been shining brightly all day, the air was still a little chilly after nightfall. Both of them tightened their collars. Song Yao walked in front with brisk steps, "Are you ready to tackle the bilinear form problem?" Xu Qingzhou shook his head and said, "I plan to put this thing aside for a while and tinker with some physical stuff." Since I couldn't get into mathematics, I could only study physics and do something in my old profession to gain confidence. "I thought you were going to fight to the death." "I'm not stupid." Xu Qingzhou curled his lips. After coming out, he relaxed completely. "I know I can't do it. Bah, I know I'm stuck but I still rush forward stubbornly." "You admit that you are no longer capable." "." Xu Qingzhou saw this as a provocation. However, School Beauty Song is obviously the type who is both naive and playful. (End of this chapter)