Telles's words made Liu Fei move slightly.

Differential geometry, a familiar name, seems to have discussed similar issues with his relatives Li Qiang and Leng Da Bingshan when he was at Hangzhou Normal University.

But more than that, he seems to have heard the term elsewhere, and it is a very important term.

So much so that at the thought of this word, my heartbeat began to accelerate.

Liu Fei was shocked in his heart, could it be that after a series of blows and difficulties, he had become an incorrigible scientific otaku?

Could it be that in the future, apart from being interested in these bizarre academics, there is nothing else that will not be able to make your heart beat faster?

Buy it...... I'm still young, and my dad still wants to hold his grandson!

Liu Fei was trembling with fear by the idea that suddenly came to him.

Previously, because of the prompts of academic simulators, he had in-depth studies in analytic geometry, mathematical analysis, advanced algebra and other problems.

There are also some descriptions of the school of differential geometry scattered in the textbooks of various schools, which probably involve the intrinsic geometry on a surface that is detached from the classical Euclidean geometry theory.

After the destruction of differential geometry, some scholars of the mathematical school re-studied this direction, but most of them encountered accidents before they achieved or had a slight achievement.

So much so that many scholars privately rumored that the ghost clan has special needs or hobbies for academics, and some disciplines have never been attacked, while some disciplines will be like sharks that smell blood.

It's a bunch of picky eaters!

Over time, differential geometry has declined completely.

Think of decline.

Liu Fei suddenly raised his hand: "Teacher, do you still have any papers or materials on the Fifth Public Postulate, especially the papers or materials of the school of differential geometry?"

Telles thought for a moment and replied, "There should be a few fragments to be found in our 'book world'. However, I advise you not to get your hopes up, after all, it was destroyed by the ghost 9-Annihilation, and many academic and written materials were completely wiped out from the perspective of information following the school of differential geometry. Even if there is a retention, there will not be too much. ”

Liu Fei nodded and stopped talking.

Telles's understanding of mathematical analysis is indeed much stronger than reading books alone, and some complex or incomprehensible problems can always be solved in a simple way.

A class is a morning, and even though Liu Fei has completed the mathematical analysis course, he still feels that he has benefited a lot.

The same is true for Telles, the happiest thing about being a teacher is that his memes can be perfectly caught by students.

Liu Fei is such a student.

Whenever he talked about his own research experience, which he was proud of, the student who had been looking down at the book always looked up appropriately to show his concern.

While while he questioned and disagreed on certain issues, other students were confused, but Liu Fei was able to follow his mind to further hypotheses and questions.

In one class, it was completely clear that Liu Fei was not at the same level as other students, and his understanding of mathematical analysis was even no less than that of ordinary master's and doctoral scholars.

Telles was a little excited, how long had it been since he had met such a well-matched student, and when he thought that Liu Fei was still a genius in the eighth main course, he was not sure who would take a fancy to the full schedule of courses every day.

Telles couldn't help it a little, and he had to start first: "Liu Fei, I am currently working on a topic in the studio of the Institute of 'Mathematical Thinking' on the extreme application of bounded functions and an infinitesimal product in extraterrestrial space warfare', if you are interested, you can join the group to study and study together." ”

Cantor Tesla, who was about to ask a question with his textbook, was stunned, and the peace of mind who was immersed in brushing the question was also stunned.

Do you want to do that?

I invited Liu Fei to join the research group in just one class, how short of people are you?

Cantor Tesla was full of low air pressure, squatting in the corner and talking to himself: "It's only the first class, and I've been compared again." Hehe, why do you use the word again?"

Liu Fei was slightly stunned, Master Telles is quite discerning, and he can see at a glance the power of his genius.

It's a pity that you have to queue up a little bit, and before this, two national research groups have invited Feige and me.

Kang Zizhong was one, and the exoskeleton armor research group on Huaqing's side also officially included him as one of the researchers.

At present, Liu Fei's focus is still on theoretical study, and he has joined too many research groups to take care of it.

Liu Fei could only politely refuse.

"Well, if you change your mind, tell me, trust me, you have a unique talent for mathematical analysis, and joining my group will take you a long way. ”

"A certain Master Telles, as long as I have time, I will definitely visit you, and I hope you will criticize and correct more in the next class. Liu Fei said very modestly.

Cantor Tesla, hehe.

Look, look, look at Liu Fei's strength.

And take the time to visit, dare to love a master is so worthless in your eyes?

Cantor Tesla's heart suddenly swelled with an infinite sense of crisis.

In any case, Liu Fei's talent in mathematics is visible to the naked eye, even if he is not convinced, he can't help but admit it.

Next, the great Lady Mercer will also take classes, what if she is attracted to this scheming boy?

Cantor Tesla panicked, and must have started reviewing in advance, and must have won Ms. Mercer's appreciation before Liu Fei.

The goddess is mine, and no one can snatch it!

Liu Fei said goodbye to Telles here, and asked the teacher of the mythological character analysis class in the afternoon to take a leave, and then hurriedly took the school bus to the entrance of the 'Book World' passage.

As the name suggests, the 'Book World' is a single, very small micro-space, which does not even have an independent ecological environment and basic natural constants.

This microspace, which is about one-eighth the size of Hangzhou City, is one of the many spatial bubbles captured by the Holy Land of Science.

About 20 years ago, the three major truth-level universities jointly acquired the right to use this micro-space, and transformed it into an independent book world, becoming one of the three largest libraries in the world.

Liu Fei got off the bus and found that there were about two dozen scholars of different ages standing at the entrance of the passage waiting to verify their identities and enter.

There are a large number of books preserved in the 'Book World', many of which are out of print, and there are also strategic academic or top-secret research that cannot be disseminated or known, so scholars will conduct strict permission review before entering, and even if they enter the book world without obtaining the corresponding permission, they will not be able to see the content they want to see.

Most of the previous scholars are 'ordinary' permissions, and Liu Fei himself doesn't know what level he is.

But with the crown of truth, it shouldn't be bad, right?

"Hello, please show your scholar ID or student ID. ”

Liu Fei: "Eh, is it okay to have a meal card?"

Staff: "......"

The scholars in front of them also turned back one after another when they heard this, there are everyone in these years, and there are still people who take meal cards and try to fool them through.