Sister Wang turned her head to look and found that what Teacher Li was holding in her hand was the "Topology" that Liu Fang had just put back, and she said casually: "Oh, a student read this book just now." Pen "Fun" Pavilion www.biquge.info"

Teacher Li couldn't help but be stunned when he heard this: "What? A student has seen it? Can he read it? ”

Sister Wang was curious: "What? Is this book hard? ”

Teacher Li said with a solemn face when he heard this: "This book is not very difficult. ”

Sister Wang threw him a complaining look: "In that case, why are you making such a fuss?" ”

Teacher Li frowned: "It's very, very difficult, even I can't fully understand the content of the book, can a college student be so powerful?" ”

Sister Wang was stunned when she heard this: "What? Can't even figure it out to you? This ......"

Teacher Li smiled bitterly twice: "Sister Wang, I'm not a god, how can I understand everything?" To tell you the truth, this book "Topology" was the last time I went abroad to participate in the International Mathematics Symposium, I bought it after applying to the school, and the content of this book is all compiled by the world's top mathematicians. ”

Teacher Li said this: "Sister Wang, are you sure that student has read this book seriously?" ”

Sister Wang shook her head: "He was sitting in the corner at the time, if I hadn't mopped the floor, I guess I wouldn't have found him, of course I don't know if he read this book seriously." ”

Teacher Li thought for a while and said, "In this way, if you see him again next time, pay a little attention to it, and if you find that he is indeed studying this book seriously, tell me that I must personally train such an excellent student." ”

Sister Wang showed a look of embarrassment: "Teacher Li, I'm going back to my hometown tomorrow to help harvest rice, I'm afraid I won't be able to help you, why don't you talk to Xiao Yang?" She's your student, and she's going to start my class tomorrow, so you just have to explain it to her. ”

Teacher Li nodded: "Okay, I'll go first, Sister Wang, I wish you a smooth journey." ”

When Teacher Li left, Sister Wang muttered in a low voice, "Is Teacher Li a little taken for granted?" It's strange that students can understand books that he can't even understand, he is so powerful, and he has won international mathematics awards, how can students compare to him? ”

At this moment, Liu Fang, who Mr. Li wanted to train personally, was pedaling a tricycle to his home, and he said to himself while riding: "This book of "Topology" is so profound, especially the last question, I can only answer part of it, well, I will continue to work hard tomorrow, and I must not give up." Having learned so much advanced mathematics has really helped me expand my thinking in programming, by the way, what is that problem called? Fat guy guess? It's a strange name for foreigners. ”

After Mr. Li returned to the classroom and dormitory, he put the book "Topology" that he bought from abroad on his desk. It was very hot tonight, his shirt was soaked with sweat, and it was sticking to his back, and he felt very uncomfortable.

In order to concentrate on mathematical research, Mr. Li got up and went to the bathroom to take a cold shower, and then he felt a lot refreshed, "Well, let's continue to study this book of "Topology". ”

Mr. Li has been studying this book for a while, and he has a certain degree of attainment in this subject, and he told Sister Wang before that he couldn't understand it, but he was actually humble.

I saw him turn the book directly to the back pages, thinking while reading, and from time to time he would pick up a pen and draw some three-dimensional graphics on the notebook.

After studying for more than three hours, Mr. Li took off his glasses and rubbed his sore eyes, "This question is so difficult, no matter how hard I try, I still can't solve it, but the professor at Oxford University is really amazing." ”

Mr. Li sighed when he said this: "Alas, I can't even solve the first few problems, let alone the last Poincaré conjecture, this is a worldwide mathematical problem that no one has been able to solve for decades!" ”

It turns out that the fat guy conjecture that Liu Fang said is actually called the Poincaré conjecture.

At half past seven the next morning, Liu Fang rode a tricycle all the way to the outside of Kaijiang University, then locked the car in a small alley and walked into the library. At this time, the library had not yet opened, so he had to stand outside the door and wait.

At half past eight, a young girl walked to the door of the library, she took out the key, and apologized as she opened the door: "This classmate, I overslept and made you wait for a long time, I'm really sorry." ”

Liu Fang looked at the key in her hand and hesitated, "Are you the administrator here?" It didn't seem like you before, right? ”

The girl explained: "The original administrator has gone back to his hometown, and I am here to take the shift. ”

Liu Fang rolled his eyes when he heard this, and quietly put the bunch of grapes he was carrying behind his back: "Oh, so that's the case, what's the matter, my library card has been lost, I told that aunt yesterday that she agreed to let me come in and read the book, do you think this matter ......?" ”

Liu Fang bought a watermelon in order to be able to rub the book, originally wanted to use it to get close to Sister Wang, but now when he heard that Sister Wang had returned to his hometown, he immediately thought about it and was ready to lie to deceive him, so that he could keep the watermelon for himself to eat. Truth be told, he hadn't eaten watermelon in years.

When the girl heard this, she didn't doubt him, and immediately nodded happily: "Since I have already told Aunt Wang, let's go in and read, until the school starts, I will do the work of the administrator, you don't have to worry about reading books." ”

Liu Fang hurriedly nodded with gratitude, he had caused trouble at school yesterday, so he naturally didn't dare to sit at the table outside and read.

I saw him walk to the corner of the wall where he sat yesterday, take out a shabby bed sheet that had been cut into small pieces from his satchel and spread it on the ground, and then take out a pencil and an old homework book from his satchel, and then walked to the math bookshelf, ready to take down the "Topology" that he had put on last night to study.

As a result, he glanced at it, but found no trace of the book "Topology", Liu Fang was slightly stunned, and said in his heart: I obviously put that book in this row last night, why is it gone?

Liu Fang thought that the book had been placed elsewhere by the administrator, so he began to look for it, but he searched all the math bookshelves, and still did not see the shadow of "Topology".

Liu Fang had a feeling that after preparing the knife and fork at this moment, he found that his meal was missing, he was a little unwilling, stepped to the administrator's table, and asked politely: "Sister administrator, do you know where the "Topology" that was originally placed on that bookshelf went?" ”