Chapter 253: Regret it!

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Mobile phone reading
"Senior, my thinking is like this. Collect this site┏Ⅹ④③⑨⑨┛"
"Since your proposed method of substituting the extremum of the first derivative obtained does not work, then change to a verification scheme."
"What I think is that we divide the linear differential equation into four forms. Perform the calculations separately. If all four forms are verified successfully, then the correctness and practicality of this simple solution can be proved."
"Which four forms?" Wang Genji's eyes revealed curiosity.
Cheng Nuo stretched out his fingers and counted them one by one.
"The first type, constant coefficient-Scholes stochastic differential equation: d￡=￡(udt+σdB)."
"The second type, time-varying coefficient-Scholes stochastic differential equation: d￡=b(t)￡dt+σ(t)￡dB."
"The third type is a stochastic differential equation of the form dξt=(aξt+bξtα)dt+cξtdBt."
"The fourth kind..."
After reading Wang Genji's paper last night, although I know that there are obvious logical errors in Wang Genji's paper, it is difficult to say that the conjecture about the new solution is correct. But Cheng Nuo couldn't bear his curiosity. Based on Wang Genji's thesis, he finally worked out a seemingly feasible path after spending the time of the two thinking classes in the morning.
Discuss the situation by situation, and then summarize the results to get the final solution.
Cheng Nuo continued to explain his thinking to Wang Genji, "For example, in the first case, its corresponding pseudo-homogeneous differential equation dξt=σξtdBt, so ξt=ceσBt, use the constant to change, and then use the Ito formula to find the integral,... "
Since Cheng Nuo has no specific time to use the formula to calculate step by step, he can only provide an idea.
As for whether this idea is correct or not, I'm sorry, and Cheng Nuo cannot guarantee it.
However, this is already the most sure direction for verification that Cheng Nuo can think of.
After the episode of Aunt Cleaning, the two didn't stay here long.
After Cheng Nuo told Wang Genji all of his ideas, the two bid farewell here.
"Cheng Nuo, the kind of thinking you mentioned, I will go back and try it now. If it is really feasible, then this paper can really be rescued." Wang Genji's face was already impatient. , Clenched his fists, his expression was very excited.
In my heart, the high morale has rekindled.
"Cheng Nuo, thank you really this time. After a while, I will treat you to a big meal." Wang Genji's tone was sincere.
Had it not been for Cheng Nuo's help, I am afraid that if Wang Genji was given another week, he would not be able to find the errors in the paper.
Not to mention... a brand new paper idea!
In Wang Genji's view, Cheng Nuo probably slept almost all night last night in order to understand his thesis.
Such a huge workload, at least seven or eight hours is enough!
These years, such an excellent and good student is rare!
Wang Genji's heart was full of touch.
"No, it's just a matter of effort." Cheng Nuo smiled and shrugged.
In order to alleviate Wang Genji's psychological guilt, Cheng Nuo specially added, "Furthermore, it didn't take much time. It was only two meditation classes in the morning. Oh, no, to be precise, it was a half class."
Wang Genji: "..."
The gap! The gap!
I wrote this paper for more than five months before finishing it.
But Cheng Nuo would do it well, and just get it done in one and a half lessons.
Although he has his own paper as a reference, Wang Genji knows that, except for the first third of the content of his own paper, which has some value, the latter part is all wrong formulas with no reference value.
Can't compare, really can't compare...
Wang Genji now finally understands why Professor Liao transferred Cheng Nuo, who had just entered the first year of university, to their research group.
Mathematical talent, this thing is not linearly related to age!
"Senior, what's wrong with you, isn't it uncomfortable?" Cheng Nuo looked at Wang Genji's expression somewhat unnaturally.
"It's okay." Wang Genji said in a daze before he recovered from Cheng Nuo's words, "Then Cheng Nuo, I have to go back to the dormitory, so I'll leave.
"Well, goodbye, senior." Cheng Nuo smiled and waved.
…………
Cheng Nuo was relaxed when the matter was over.
Anyway, he has done everything he can. Which step Wang Genji can achieve depends entirely on him.
"The sun in the east, the rain in the west! Brother, that sweetheart~~"
Cheng Nuo put his trouser pockets in his hands and walked back to the dormitory humming a little song.
Suddenly, Cheng Nuo's expression on the road changed abruptly.
He suddenly thought of something quite serious.
Wang Genji got new ideas for the paper, and in the following period of time, he must devote all his energy to writing that SCI paper.
but……
That guy Wang Genji is in charge of the second part of the project!
In class and writing papers, almost all of the time is taken up.
Where can Wang Genji spare time to research topics?
Essays cannot be finished without ten days and a half months.
The subject that Cheng Nuo and the others studied was interlocking. Without the research results of the second part, Jiang Shuobo and Zhuang Poxiao could not continue to study even if they had great abilities!
What am I...
Do evil!
Cheng Nuo sighed up to the sky, speechless and tearful.
He seemed to be looking at the winter vacation, gradually leaving him.
Damn it! Really deserve it!
Cheng Nuo couldn't wait to smoke his own two mouths now.
I had known this before, but why he used to help Wang Genji read papers, find mistakes, and provide new solutions. Why?
In order to dig a pit, then jump down by yourself? !
No, Cheng Nuo felt that he couldn't let tragedy happen!
The wonderful winter vacation time must not be spent in research topics.
After returning to the dormitory, he directly chatted with Wang Genji privately on QQ.
Cheng Nuo: "Senior, are you there?"
It took a few minutes for Wang Genji to reply.
Wang Genji: "Cheng Nuo, I just did a preliminary calculation for the first form you mentioned. Sure enough, the final calculation result is exactly the same as the result obtained by the constant variation method."
"Hahaha, I knew it, based on the simple solution that my genius brain came up with. How could it be wrong! I made a mistake in the last verification, and this time I used the correct verification steps. I must prove the feasibility of this solution. come out!"
Wang Genji looked very excited.
Cheng Nuo: "Then what, senior, can I discuss something for you?"
Wang Genji: "What's the matter, say?"
Cheng Nuo: "Senior, are you busy revising the paper right now? I think, the subject matter may take up your time too much."
"So I think, senior, give us three tasks directly for the second part of your topic, so you don't have to worry about it. Just concentrate on writing the paper."
Wang Genji: "Cheng Nuo, who do you think of my Wang Genji?!"
? ? ?
Cheng Nuomeng took a moment.
I saw Wang Genji continue typing ~EbookFREE.me~ and hand over the second part of the work to the three of you, and then I will do nothing, and write my name when the project is completed. Take an honor for nothing. Isn't this the empty glove white wolf? ! Do you think Wang Genji is such a shameless person? "
Cheng Nuo: "Senior, I just..."
Wang Genji: "Well, Cheng Nuo, don't talk about it. Anyway, I can't agree to this matter."
"Time is really tight, but at most, I won't go back for winter vacation. It's not like I didn't go back before. To be honest, I'm used to it. Don't worry about me, really."
What am I...
Cheng Nuo almost vomited a mouthful of old blood.
Brother, you are used to it.
But me? !
I've just entered university less than a month ago!
Should we accept the cruel fact that we cannot go home during winter vacation?