At this moment, Shen Qi entered a state of self-forgetfulness.

He ignores everything but mathematics.

Students coming and going, aunts cleaning up dishes, and couples showing affection not far from the next door.

Air, it's all air.

Unreal, all illusory.

So what is real?

This paper can be written, and it is the most real truth.

"It is said that China's academic community is chaotic, but I don't think so, this weirdo in the academy is a clear stream in the academic world. I don't know what he's thinking, but I think it must have something to do with mathematics, and it's rare to be able to reach a certain level of thinking about mathematics these days. The girl couldn't help but open her mouth and chatted with her engineering boyfriend opposite.

He is the most dangerous mudslide in Quanyan University, and he has never seen a freshman with such a B. "The engineering man is annoyed, Shen Qi, you are really ghostly, I can see you anywhere, running in a circle with me, eating and flirting with my sister, forcibly pretending to be B, everyone is angry!

"Hey, you're only a sophomore, how many freshmen have you seen?" said the girl, skillfully peeling off a skin shrimp and putting it on the plate of the men's ticket.

"Let's go, watch a movie. "The engineering man doesn't want to stay here for a second longer.

"The shrimp haven't been eaten yet, so don't waste it before you leave." The girl continued to peel the shrimp.

Faced with the logic problem of the generalized Jacobian matrix algorithm of semi-smooth equations, Shen Qi was about to collapse, and he had no ideas, no ideas at all.

In fact, there are too many ideas and too many miscellaneous ideas, but there is nothing to be done.

The phone vibrated for a moment, Shen Qi took it out and took a look, and Ou Ye sent a WeChat message: "The algorithm of a class of determinant characteristic equations has been completed, can you change it?"

Below the dialog is an attachment, df.

Shen Qi was inexplicably stimulated, and in less than four days, Ou Ye finished writing a paper?

Click on the PDF paper file, Shen Qi quickly reviewed it, and the title of the paper is "Algorithm for a Class of Determinant Characteristic Equations", which he chosen.

The rest of the work other than the title of the paper is done by Ou Ye, which is done on the basis of Shen Qi's thesis outline.

Shen Qi-Ouye

Department of Mathematics, School of Mathematical Sciences, Yan University-Capital-100000

Abstract:In this paper, we use the inertia of the quadratic type of variables to give an algorithm for a class of determinant characteristic equations, and consider some of its special results.

Keywords: determinant, quadratic, eigenvalue

Body:......

References:[1]. P，Geometric-aspect-of...... ，.Appl，2005，301：512-523

[2]. T，Inequalities-among-...... ，Studia-Math，1970，33：198-211

......

The paper jointly drafted by Shen Qi and Ou Ye was neatly formatted and rigorously discussed, and basically all that should have been written was written.

Ou Ye was very attentive, and the papers in the Polish mathematical journal "Studia-Math" in 1970 were cited by her.

At that time, under the influence of the big brother of the Soviet Union, Poland, Romania, Hungary, Yugoslavia, East Germany and other Central and Eastern European countries produced many mathematical talents, and their papers are still outdated today in the 21st century.

"There are a few small changes that need to be made, and I can't explain it clearly on WeChat, so let's learn a canteen. Shen Qi sent a message back to Ou Ye.

Not long after, Ou Ye came to Xueyi Canteen with his laptop, found Shen Qi, and sat beside him.

Looking at the steamed buns on the table, Ou Ye's notebook had no place to place: "Matrix?"

"Can you understand the meaning of this matrix?" asked Shen Qi.

Ou Ye shook his head: "It's too difficult." ”

Shen Qi put the steamed buns on the dinner plate and asked Ou Ye to put the laptop on the table.

"Ouye, your hand speed for writing papers is faster than mine. Shen Qi was a little surprised, "At this time last year, when we first met, you introduced yourself, my name is Ou Ye, Ou is Ou of Ora, and Ye is Ye of Fourier." Your name is wonderful, Euler is your brother, right? The most powerful characteristic of your Ou family is that you write papers and sneak into the air. ”

"The frame you built, so fast. Ouye said.

"Let's stop blowing each other's business, let's talk about this paper that we co-signed, in fact, most of the work is done by you, and I am just a gatekeeper. Shen Qi operated Ouye's laptop, pointed to the LaTeX document on the screen and said: "Here, the classification of quadratic curves and quadric surface bundles needs to be considered, and the determinant (11) needs to be changed. ”

"Hmm. "Oye seconds understand.

"And here, the greatest common factor of the i-order subformula is generally not expressed in this way, so change it. ”

"Invariant complete set?"

"Yes, the amount of change is not significant, it is a revision of the partial expression. ”

"Oh. ”

"I won't check the calculation part, I don't have time to do it again, I trust your computing ability. Shen Qi has a deeper understanding of Ou Ye's academic characteristics, as long as Ou Ye understands his logic, Ou Ye can quickly come out of the whole paper, and the compliance degree is more than 95%.

"Where to throw?" asked Oye.

Shen Qi said: "You find a core journal to vote, except for the top four in China. The signature of the paper has my name, which is not a big problem, after all, I am the one who sent the paper. If this paper passes, you will also become a person with academic capital. ”

"Good. Ou Ye nodded, and asked again, "Are you in bad spirits?"

Shen Qi said with a tired face: "On the 23rd question, I encountered a lot of confusion when writing my paper, my logic didn't work, I was inconsistent, I stayed up for a few nights, and I was tired." ”

"Take your time. Ou Ye said, she closed the notebook: "It's not advisable to stay up all night in a row." ”

"Do you think I want to stay ......up all night continuously" Shen Qi smiled bitterly, and in an instant, yes, just like that, he suddenly got a fleeting inspiration: "Ouye, what did you say?

Oye: "I...... I didn't say anything. ”

Shen Qi's face was full of red light, and his eyes were shining staring at Ou Ye's eyes: "Backwards, the last words you just said." ”

"It's not advisable to stay up late in a row?" Ou Ye was a little worried, Shen Qi was crazy, right?

Shen Qi grabbed Ou Ye's upper arm with both hands and shook it very excitedly: "Ou Ye, what do you mean, continuity is incalculable...... No, it's supposed to be discontinuous?"

Ou Ye's eyes were shaken: "No, I didn't say that." ”

"Yes, what you said is very reasonable, although the common property of Φ is H discontinuous differentiability, but Φ is continuous differentiable on R^n! I thought about it, I finally thought of it, haha! Ou Ye you are very slippery, 666!" Shen Qi shouted, and then ran away, he wanted to go back to finish his thesis, and the core logic appeared, which started by accident and became inevitable.

Shen Qi ...... You ......" Ou Ye looked at Shen Qi who was rushing away, and muttered to himself: "Crazy, crazy is hopeless." ”

The couple not far from the next door witnessed this, and they stared wide-eyed.

"This Shen Qi, and this Ou Ye, what are they doing?" The girl studied liberal arts, she didn't understand what problem Shen Qi was yelling at all to solve, she just felt very powerful.

The engineering man is also a scholar, and he can understand a little: "I just said, there is no normal person in the number of hospitals, and the two of them team up to pretend to be B, two neurotics." ”