From ancient times to the present, there have been thousands of geniuses studying Euclidean geometry, and countless successful people are among them. If we look at the qualifications of modern professors, the number of masters of these achievements can meet the needs of the entire Chinese academic community.

However, among the achievements derived from European geometry, the most famous are two great men who go against the rules, Robachevsky and Riemann, who built the "non-European geometry" edifice.

The word "curvature" that often appears in science fiction novels actually comes from Riemann geometry. In fact, the tools used by Einstein to describe curved space are also Riemann geometry, but the source of their ideas is incredible.

It was precisely because people's continuous doubts about the fifth proposition of Euclidean geometry that non-Euclidean geometry was born.

In order to prove the parallel theorem by inverse proof, we must deny the fifth theorem of Euclidean geometry in the question and try to prove that it is wrong. What embarrasses many people is that when the problem starts to work, a lot of new theorems are derived, but they cannot return to the question and prove that the parallel theorem is correct. So a group of people who believe in Euclidean geometry go further and further on the road to anti-Euclidean...

However, non-European geometry was a matter in the 19th century. Cheng Jinzhou did not believe that a small first-class astrology warlock could solve a problem in the 19th century on the basis of the 17th century.

Xiang Xin waited quietly by the side. Seeing that Cheng Jinzhou was not speaking, he took out the draft paper he carried with him and spread it out page by page. It was all about the reverse proof method of parallel theorems.

It was useless to think too much, Cheng Jinzhou took a breath and leaned over to look.

The Star Warlock, wearing a gray-black robe, looked a little nervous.

To those who don't know, this may be a very strange thing. The arrogant astrology warlock shows disconfidence in front of an ordinary person. Such things often only appear in Romance novels...

While watching, Cheng Jinzhou also used a quill to calculate occasionally. As another research-oriented doctor, the classic proof from 300 years ago, he had long been familiar with the answers he should get. He could not do anything, so now he has to do it himself.

Fortunately, what I only read is elementary geometry and very little advanced geometry knowledge, so Cheng Jinzhou will not be unable to start.

The draft paper is about 50 pages thick. Xiang Xin has a much more knowledge than the Euclidian era. Standing on the edge of modern mathematics, she can also look at problems with a more advanced perspective. At the beginning of counter-evidence, all kinds of inferences were used well. When looking at the first 20 pages, Cheng Jinzhou's uneasiness increased with the times.

However, he soon felt relieved.

Because Xiang Xin began to use guessing statements to make descriptive statements.

She had never been exposed to calculus at all. She just used the concept of limits hundreds of years ago and would not succeed even if she was exhausted.

Cheng Jinzhou breathed a long sigh of relief - God felt sorry for the damn history, damn history, would not change because of the show of a butterfly. Without the scientific ideas that lead the world, even if there are many books, he would not be able to compete with these super-intellectual astrology warlocks.

Xiang Xin was a little misunderstood. Seeing Cheng Jinzhou lifting his head at the place he was most worried about, his whole face turned red with shame. Qiqiai Ai said, "The latter should have been removed, but I want you to guide you..."

Although Xiang Xin has asked Cheng Jinzhou for questions these days, she has never said such sentences as "asking for advice" or "guidance". As a genuine star sorcerer, she is much higher than those of "lovers" such as Wu Zong. While enjoying the authority and benefits of a star sorcerer, she also bears unshirkable responsibilities, including maintaining the image and dignity of a star sorcerer.

The willingness to lower one's head and say the word "guidance" at least shows that Xiang Xin recognizes Cheng Jinzhou's ability. If it weren't for personal experience, Xiang Xin himself wouldn't believe that there was a 13-year-old boy with mathematical knowledge of more than a first-class star warlock.

But when she lowered her head, her heart felt much more relaxed.

Cheng Jinzhou didn't understand the twists and turns, and hesitated for a moment: "The angle you chose is not wrong, but you chose the wrong goal."

"Target? You mean the parallel line I should first assume a little bit..." Xiang Xin suddenly mentioned the specific content.

Cheng Jinzhou shook his tender face and shrugged: "With your current knowledge reserve, you cannot get the answer you want, you should try simpler questions first."

Xiang Xin's face suddenly turned red and suddenly stood up. After standing for a moment, he said, "Are you saying I'm not qualified to do this problem?"

If it were a native of the Daxia Dynasty who was questioned by a star warlock, he would have collapsed long ago. Cheng Jinzhou just frowned and said, "There are many problems that you are not qualified to do. Your attitude at this moment will not be qualified to do such problems in this life."

"I..." Xiang Xin also understood, knowing that she had gotten the wrong temper, but she wanted to apologize to Cheng Jinzhou, but she couldn't help but feel embarrassed. She was in a stalemate for a while and simply rushed out.

Cheng Jinzhou shrugged and put a big stone on his chest.

If you continue to teach, Xiang Xin might really touch a little bit, which would be much more troublesome at that time. This astrology warlock, who looks like a little nun, is one of the most outstanding geniuses Cheng Jinzhou has ever seen. He only took more than a month to study and then almost independently concluded that this level is extremely good at any university in the 21st century, but Cheng Jinzhou would rather believe that Xiang Xin was in the era of scholars.

In fact, it was precisely because of the rapid alternating development of modern science in the history of the earth that so many super geniuses were born - only in the early 20th century could the genius have been compared with that.

A gust of wind blew the half-open window, blowing several drafts on the table to the ground, and the one exposed to the outside was a series of continuous calculations of the limit.

Cheng Jinzhou stared at the handwriting representing the calculus chicks for a moment, pushed the door open, walked out of the hospital with big strides, and took a deep breath.

The air was filled with the smell of a giant.
Chapter completed!