Chapter 113 I’m really better at physics than mathematics
While Xu Qingzhou was thinking hard, Xu Zhengyang and the others had arrived in the classroom.
After Xu Zhengyang’s guidance, Kong Xianbo finally regained some of his former energy. Yes, we are engaged in mathematics, so why compete in physics? As long as we can win in mathematics, that’s it!
"Lao Kong, aren't those guys from our class?" Xu Zhengyang pointed to the two strange boys in the front.
Kong Xianbo took a look, shook his head, and said, "These two people are re-cultivators."
"Rebuild it"
Xu Zhengyang had a cold war, thinking that he should do it well, he couldn't afford to lose this person. Moreover, as soon as he entered the classroom, there were a large number of unknown people, and an inexplicable fear arose in his heart.
It's that uncomfortable feeling of going to the enemy's base camp alone and facing a bunch of strangers with knives and guns.
Jiao Mingwu sat on the podium, looking at the latest issue of the electronic journal "Mathematical Invention" sent by Gu Zhzhong, about the application of Euler's formula in the representation of wave functions
He nodded lightly, with no trace of emotion in his eyes. Concealed admiration.
Being able to use wave functions, calculus and linear algebra proficiently must be very proficient. This was the reason why he was assured that Xu Qingzhou would not listen.
If you have this level in your freshman year, you may have a chance to compete for the Fields Medal in less than 10 years.
"Professor, I see you are in a good mood today." A senior smiled and chatted with Jiao Mingwu.
Jiao Mingwu was in a good mood and nodded: "Well, there are students in our college who have published papers in "Mathematical Inventions"."
"Mathematical invention? So powerful!"
"Your student?"
Next to them, Xu Zhengyang and others also listened carefully to the chat between the senior and Professor Gu. They lamented that the senior had a strong mentality and was so calm even after retaking the course.
"After all, I'm still your junior." Jiao Mingwu looked at the man on the left.
"Ah? Junior, you got sci in your sophomore year?!" This person exclaimed.
Kong Xianbo secretly exhaled, clenched his fists, and was full of energy. He published a paper in a top journal in his sophomore year. This was the life he should have.
Jiao Mingwu looked around the classroom and said with a smile, "He didn't come to class today."
"Didn't come?" The boy was stunned for a moment. After thinking about it, he was surprised: "A big guy who published science can also retake it."
The boy next to him also laughed, secretly thinking that it seemed normal for him to fail and retake the exam.
"Hmph~ Do you think others are like you two?"
Jiao Mingwu stared and said angrily: "Xu Qingzhou, I am a freshman in this class!"
"???"
The classroom fell into silence.
At 5:30 p.m., Xu Qingzhou came out of the computer room and lamented that it was indeed a supercomputer. It was much faster than his computer. Filtering out pairs was as easy as drinking water.
Only then did I notice that Gu Zhizhong sent a message saying that the paper was published.
Xu Qingzhou was also a little surprised that the two papers were published on one day.
Of course, although they are on the same day, the two journals "Physical Reports" and "Mathematical Invention" have different publication dates.
For example, the date of "Mathematical Invention" is November 5, 2014.
Many journals will be printed in advance so that readers will not feel that the November issue is out of date when they receive it in October.
Also, the group was bombarded with messages.
Of course, mainly due to the news about Xu Zhengyang, Kong Xianbo and Zhai Ziqiang fell into an eerie silence.
He posted all night and said, put away the phone and go to dinner.
While he was eating in the No. 3 cafeteria, Ji Yunshi called and said that the procedures for the second major had been completed, and he usually followed class 1 of the physics major. As for whether to attend the lecture or not, it depends on whether Xu Qingzhou has time.
After eating, Xu Qingzhou found an empty classroom. The prime number analysis model constructed now is just a low-level model. It is a foundation in a sense, and more bricks and stones need to be added next.
However, while simulating numerical values at the supercomputing center in the afternoon, Xu Qingzhou discovered a small problem.
When constructing the underlying model, in order to better screen prime numbers and find patterns, Xu Qingzhou wrote a Python function.
[#Initialize a Boolean array and set all values to True, indicating that all numbers may be prime
prime=[Truefor_inrange(limit+1)]
p=2
while(p* p
#If prime[p] has not been changed, then it is a prime number
if(prime[p]==True):
#Update all multiples of p to non-prime numbers]
It can be found when running in the supercomputing center that when generating all prime numbers less than or equal to 10000000, that is, limit=10000000, this function will consume a lot of memory and computing time.
This situation did not occur before using my own computer simulation, but when using a supercomputer, the problem becomes more obvious.
It feels like there is a 1050 graphics card in a top-end computer.
Xu Qingzhou gently turned the pen in his hand and was thinking about how to modify it.
Time passed by minute by minute.
At 22:30 in the evening, Xu Qingzhou breathed out, looked at the screen, and nodded with satisfaction.
[primes=np.array([2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31
#Calculate the prime number gap
gaps=np.diff(primes)< br/>#Calculate mean and standard deviation]
The approximate expression of the prime number theorem, which gives the approximate value of the number of prime numbers \pi(x)π(x) less than or equal to a certain number $x$: [\pi(x)\approx\frac{x}{\ lnx}]
This formula is very accurate when $x$ is large.
On this basis, using the primerange function directly has the same effect as the previous Python function, but the entire operation process is greatly simplified.
After stretching, Xu Qingzhou packed up and returned to the dormitory.
Xu Qingzhou pushed the door open and entered, only to find that the atmosphere in the dormitory was very strange. Kong Xianbo was sitting on a chair, his eyes dull. Zhai Ziqiang looked at him and hesitated to speak.
Xu Zhengyang was a little better, but he was staring straight at him at this time.
Xu Qingzhou put down his things and asked worriedly: "Are you all okay?"
"I'm fine, but Lao Kong and the others are heartbroken."
Xu Zhengyang's eyes were full of resentment, he gritted his teeth and said, "Old Xu, what the hell is going on!"
Kong Xianbo and Zhai Ziqiang also looked over, wanting to hear what Xu Qingzhou had to say.
"It's just two papers. It's not a big deal. I originally planned to tell you later." Xu Qingzhou smiled modestly.
Just two papers? Not a big deal?
Xu Zhengyang was silent. At this time, he suddenly felt that Lao Kong's previous pretentious behavior was easy to accept and even felt friendly.
Damn, this guy is the real pussy king!
Kong Xianbo held his chest, feeling like he was having a myocardial infarction. Zhai Ziqiang exhaled and extended a thumb.
"I started to conceive these two articles during the summer vacation, and Professor Gu Zhizhong also helped me revise them." Xu Qingzhou explained with a smile.
Professor Gu helped me correct it?
After hearing this, Kong Xianbo finally felt a little better. If Professor Gu helped him change it, then...
But why didn't Professor Gu sign his name? There is not even the name of the corresponding author.
Before Kong Xianbo asked, Zhai Ziqiang had already discovered the key point: "Professor Gu teaches mathematics, how can he help you revise your physics paper?"
"Oh, this article was written by myself. Professor Gu only helped me correct the mathematics article, but because the changes were not major, he said he would not sign it."
"Actually, I didn't lie last time. I'm really better at physics than mathematics."
(End of chapter)