Chapter 394 (1/2)
Chapter 397
”graduate students majoring in mathematics?” The young man was stunned at first, then shook his head and laughed, ”this article is not something that a mere graduate student can understand.”
Cheng Nuo shakes his head, ”that may not be so!”
”Oh?” When the youth smiles, he looks directly at Cheng Nuo's plain face and says with a smile, ”then I'll wait and see.”
The young man looks at Cheng Nuo, arms in his arms, with a slight disdain smile on his mouth, which means please start your performance.
Cheng Nuo didn't pay attention to the young man, but lowered his head and put his eyes on the middle-aged man who sat beside the young man without saying a word.
Cheng Nuo Wei leaned over and said with a smile, ”this article should mainly talk about the derivation of relevant formulas in the space composed of the complex projective space of algebraic geometry in Euclidean space with infinite points. Professor Russell, am I right? ”
The middle-aged man suddenly raised his head and asked, ”do you know me?”
Cheng Nuo smiles, ”Professor Russell is a big figure in the field of geometry. How can students not know him. At present, I am also focusing on geometry. Some of your papers have been read by our teachers! ”
Russell didn't expect that anyone knew him, and it seemed that he was still an admirer of him.
He pushed his glasses and said politely, ”my job as a mathematician is to write better papers and educate your next generation. If I have a chance, I can give you some advice. Oh, by the way, I'd like to ask you which Professor your teacher is. Maybe we still know each other. ”
”Oh, the teacher of the students is Professor Fresnel.” Cheng Nuo said.
Russell's face was stiff.
His major area of geometry is good, and he is a little famous in this circle, but compared with Professor Fresnel, he is nothing compared with him.
Among all the mathematicians who are still active in the field of geometry, Professor Fresnel is worthy of the first place.
A professor Russell, who was only invited to attend the International Conference of mathematicians and had a lecture with dozens of people, was naturally not qualified to instruct Professor Fresnel's students.
Professor Russell immediately became enthusiastic and showed a kind smile on his face. ”Professor Fresnel is my idol. When I was young, he had the idea of learning from him, but he didn't get into his eyes. As a student of Professor Fresnel, I envy you very much! When you see Professor Fresnel, please say hello to me
Cheng Nuo nodded with a smile
”Oh, by the way, this is me.” do you have a pen? ” Cheng Nuo reaches out.
”Oh, yes!” The youth is in a trance for a moment, and takes out a pen from his pocket and hands it to Cheng Nuo.
Cheng Nuo has read the part of the paper that has been stained by coffee.
After taking the pen, he wrote in the place where it was not wet.
Given the N + 1-dimensional complex Euclidean space CN + 1, consider the subset CN + 1 {0}. The equivalence relation is introduced as follows: if for the point (Z1, Z2,...) in CN + 1 {0} , Zn + 1) and (W1, W2 There exists a nonzero complex number ρ such that 】
[in the n-dimensional complex projective space CP, the points (Z1, Z2 These equivalence classes form subsets of CPN, where each point corresponds to the point (Z1, Z2,...) in C This is a one-to-one correspondence to C. It will be regarded as equivalent to C, and then 】
[let UI (0 ≤ I ≤ n) be all the points of coordinates Xi ≠ 0 in PR, then UIR, U0, U1 , UN constitute an open covering of PR In the general theory, the projective space is also established on the integer ring Z, that is, the projective generalized PZ is established. Therefore, PX can be set up for any profile X and fiber product can be created. 】
after writing, Cheng Nuo puts both the paper and the pen in the young man's hand in the shocked eyes of the stewardess.
Cheng Nuo's straight and straight voice stands in front of the youth, giving him a feeling of looking up.