Omnipotent Data

It turned out to be a joint signature? !

Cheng Nuo was taken aback.

Then he asked, "Senior, why did you write my name?"

Wang Genji: "Hahaha, brother Cheng Nuo, are you very touched now?"

"Don't be too grateful to me, senior. To be honest, if this paper weren't for your guidance, it would be difficult for me to publish successfully."

"This joint signature is even my reward for you."

There is still a big difference between an individually signed sci and a jointly signed sci in the final assessment.

Wang Genji was willing to write Cheng Nuo's name on it, and he did have the meaning of thanks.

By the way, let Cheng Nuo remember his friendship. Feel the love from him as a senior!

After all, that was an opportunity to sign an sci paper included in a journal with an impact factor of 2.333. It has a great effect on the evaluation of various awards such as scholarships.

After waiting for a long time, waiting for a long time, Wang Genji saw Cheng Nuo's reply.

Cheng Nuo: "Actually...senior, this paper should be signed by you alone."

"If I want the opportunity to sign the sci paper, I just write a random one, don't bother you."

Just... just write an article?

Wang Genji's heart was a little messy.

What does his junior brother think of sci journals?

This is not the women who stumbled on the street, they can pay for it!

That represents the world's top paper evaluation standard!

Especially in China, in the undergraduate stage, it is a great honor to have a paper included in sci.

Wang Genji felt it necessary to talk to Cheng Nuo carefully and said, "Cheng Nuo, sci papers can't be written casually."

"You don't know my experience. It took two years and seven or eight minor revisions before the first paper was included in sci. The last time this paper was directly returned by the reviewing editor for overhaul, if it hadn't You, my next sci, can only wait until the senior year."

"As for your words, there is now a sci paper signed by you. If you can steadily type and get an sci at the end of the sophomore semester, you should be able to secure a research paper."

Cheng Nuo smiled bitterly, "Senior, I'm telling the truth."

"Or, you can help me see this."

With that said, Cheng Nuo sent a document on the computer to Wang Genji via qq.

"What is this?" Wang Genji asked.

Cheng Nuo said casually, "A paper."

"I just finished writing today, and I am going to vote for sci journals to try. By the way, do you have any foreign sci journals recommended by you, senior?"

"Senior, are you still there?"

Wang Genji: "Wait a minute, I will finish reading your paper first."

a dissertation? Contribute to sci?

Wang Genji, with a strange expression on his face, clicked on the document sent by Cheng Nuo.

Cheng Nuo's thesis title: "The Application of Taylor Formula in Determining Convergence and Divergence of Alternate Series".

Taylor's formula belongs to the content of advanced mathematics courses.

Staggered progression is part of the course of mathematical analysis.

Alternate series is a very important series form, but the methods of checking convergence are very limited.

In the university textbooks, only the Leibniz discrimination method is introduced. Moreover, the application conditions of Leibniz's discriminant method are relatively strict, especially for complex general terms, the monotonic decreasing condition is not easy to judge and difficult to guarantee.

It happened that that afternoon, Cheng Nuo had just made a question related to Taylor's formula from Professor Lu. So when the mathematics department's mathematics teacher talked about the knowledge point of interlaced series, it was like a flash of inspiration, and Cheng Nuo's mind came up with an idea:

Is it possible to introduce the Taylor formula into the judgment of the convergence of the staggered series, expand the general terms of the staggered series, and then determine the convergence item by item?

As soon as this idea emerged in Cheng Nuo's mind, it lingered.

Simply, Cheng Nuo directly took out the draft paper in class and worked it out.

After spending two classes, Cheng Nuo roughly knew that his thoughts should be correct.

Taylor's formula, which is a formula with a wide range of applications, is also applicable in judging the convergence of the alternating series.

The rest is simple.

After more than a week, Cheng Nuo took advantage of the salted fish's time to add supplements and completed this thesis.

…………

The camera returned to Wang Genji's side again.

After he saw the title of Cheng Nuo's thesis, he was puzzled.

Taylor's formula used to determine the convergence of the staggered series?

This is the first time that Wang Genji heard that he could do this.

With a skeptical attitude, Wang Genji continued to look down.

Below is the text of Cheng Nuo's paper.

"From Taylor's formula: f(x)=f(0)+f'(0)x+f''(￡)/2*x^2, where ￡ is between 0 and x, so f(- 1^n/n)=………”

In the thesis, by applying Taylor formula, two theorems on the convergence judgment of alternate series are given.

Theorem 1: Suppose f(x) has a second-order continuous derivative in a certain field at x=0, and f(0)=0, then ∑[∞, n=1]f(-1^n/n) converges .

Theorem 2: Let f(x) be in [-1,1]...

For each theorem, Cheng Nuo gave another example to prove it.

It can be described as very detailed.

It took half an hour, a full half an hour, before Wang Genji finally finished reading Cheng Nuo's paper.

"call!"

Wang Genji exhaled deeply, staring at the computer screen blankly, not knowing how to describe his feelings at this time.

Cheng Nuo's "The Application of Taylor Formula in Determining the Convergence and Divergence of Alternate Series", he read it from beginning to end without missing a word.

It can be said... perfect!

Perfect and impeccable.

In terms of the content of the argument, not even a single letter error can be found.

From the perspective of Wang Genji, an outsider, if this paper is submitted to sci, there is more than 80% chance that it will be included in the sci journal.

Without him, the application value of Cheng Nuo's paper is too high.

Using Taylor's formula to determine the convergence of the interlaced series is not only simple and convenient, but also gets rid of the limitation of Leibniz's decision method, giving a universal and practical method to determine the convergence of the interlaced series.

Wang Genji couldn't find any reason, UU read www.uukanshu. com will reject this paper in sci journals.

Wang Genji typed and asked, "Cheng Nuo, you really wrote this paper?"

Cheng Nuo: "Of course I wrote it. Among the people I know, apart from you, who can write an sci alone?"

"Hahaha, that's what you said." Faced with Cheng Nuo's flattery, Wang Genji took it without shame.

"By the way, how long did you write this thesis? It's less than two months since the start of school. You won't start preparing during the summer vacation, right?" Wang Genji asked with a smile.

"Summer vacation?" Cheng Nuo was taken aback for a while, and said lightly, "No, it took less than an hour a day for the last ten days to get it out."

Ten days, less than an hour a day?

Wang Genji slightly doubted life.

When can a sci paper be produced in less than ten hours?

Is the era developing so fast that I can't keep up?

Suddenly, Wang Genji remembered another thing.

"Cheng Nuo, I still have something to do, so I won't tell you more."

"What is it, so anxious? You haven't recommended me which journal to vote for?"

"For this, just look for those with high impact factors in the second district. They will not reject the manuscript."

After saying this, Wang Genji hurried offline.

Later, he even edited an email and sent it to Davis, the review editor of Applied Mathematicslette.

Why?

Of course, to see if you can delete Cheng Nuo's name from his paper.

That guy Cheng Nuo has the potential to make an sci in ten days. The signature of his paper is still missing.

Then his joint signature can only dig a hole for himself.

…………………………