Jiang Wenyuan was so praised by Shen Guofeng that he felt a little carried away. He took out the letter of appointment from the Institute of Mathematics of the University of Copenhagen and the letter from teacher Henry Booth to Shen Guofeng. After Shen Guofeng read Teacher Booth's letter, , stared at Elder Jiang Wen for a long time with wide eyes before saying:
"It turns out that Professor Jiang is a world-class mathematician. I am so lucky to know you! No wonder these mathematical problems were solved effortlessly when Professor Jiang came into his hands."
Jiang Wenyuan said humbly: "You are so complimentary! It happened that I specialized in partial differential equations when I was in college, so I was able to solve it. There are many branches in mathematics, including geometry alone: plane geometry, solid geometry, analytic geometry, etc. Projective geometry, differential geometry, topological geometry, Riemannian geometry, etc. A mathematician can only be exposed to and familiar with limited subjects in mathematics. As the saying goes: Every line is like a mountain. Even if the mathematics master is not involved in the mathematics topics himself, some Even simple math problems may not be able to be answered. I am like a blind cat encountering a dead mouse. I just happened to encounter it, and there is nothing extraordinary about it."
"Professor Jiang, you have helped my friend a lot, and you will be leaving Kunming soon. I will treat you today. I will take you to a fun place to let you have fun and celebrate!"
Shen Guofeng pulled Jiang Wenyuan out of the school, called two rickshaws, and took them to the Paramount Ballroom in the bustling downtown area of Kunming and got off. Shen Guofeng paid the fare and asked Professor Jiang to pull him away. Go in. Jiang Wenyuan looked at the colorful neon lights flashing above his head and asked doubtfully: "Mr. Shen, the good place you took me to is right here?"
"Yes, the girls here are all as beautiful as angels. One is more beautiful than the other. It is really a paradise on earth."
"This is too expensive."
"Haha, it's not expensive at all. This is the money paid by my friend. Do you know? He is offering a huge reward for the answer. The money he paid is enough for us to play here for a month."
As he spoke, Shen Guofeng took out a large stack of banknotes from his wallet and stuffed it into Professor Jiang's hand and said, "This is your labor fee."
With money, Professor Jiang seemed to have the confidence. He straightened his clothes and followed Shen Guofeng into the Paramount Ballroom. He found a seat next to the dance floor and sat down.
Shen Guofeng took a bottle of French red wine from the bar and drank with Professor Jiang.
Professor Jiang sipped his wine and took in the surrounding environment. The ballroom was quite large, splendidly decorated, and extremely luxurious. A group of musicians stood beside the dance floor, playing soft music. It was intoxicating. There were men and women in fashionable clothes on the dance floor. Holding hands around the waist, dancing briskly to the beat of the music, the beautiful clouds and beautiful figures are so beautiful. Jiang Wenyuan has not experienced such an atmosphere and enjoyed such a life for a long time. He is a little professor , who dares to imagine such a luxurious life, let alone know that there is still such a place for enjoyment in Kunming...
At this time, after the dance, the lights came on. The dance partners walked out of the dance floor arm in arm and returned to their seats. Shen Guofeng stood up from his seat and waved to a woman wearing an emerald green cheongsam not far away. She waved and clapped her hands a few times. The woman came over and sat down next to Professor Jiang. Shen Guofeng poured a glass of wine and handed it to the woman. Then he introduced to Professor Jiang:
"This is Miss Peony, the top dancing queen in the Paramount Ballroom."
"This is the elegant and elegant Chinese talent, professor of Yunnan University, Teacher Jiang Wenyuan."
Miss Mudan took out a cigarette from her bag, lit it, blew out a beautiful smoke ring and said, "Oh! It turns out you are a great intellectual. I have admired you for a long time! I am so happy to meet you."
The voice is as clear and clear as a silver bell.
Jiang Wenyuan said modestly: "What kind of great intellectual? Don't listen to Mr. Shen's nonsense. I am just a poor teacher and craftsman. I can meet Miss Peony. Such a beautiful woman is the blessing of my life."
Jiang Wenyuan did not dare to look at the woman, and his eyes quickly swept over her face. He felt his eyes light up. An angelic smile bloomed on her beautiful face, which was very pleasant. She was like seven fairies floating down from the Milky Way. Jiang Wenyuan felt his heart surge with excitement.
At this time, Mudan generously stretched out her white and soft hands and gently held Jiang Wenyuan's hand and said, "Professor Jiang, can you please dance with me?"
Jiang Wenyuan gave in and said, "I haven't danced for a long time. I'm afraid I can't dance well. I'd better let Mr. Shen dance with you."
"What are you talking about? If Miss Peony asks you to dance, just dance. You haven't danced for a long time, so you should ask Miss Peony to train you. Otherwise, when you go abroad, you won't be able to dance, and you will just make jokes to foreigners!"
Shen Guofeng pushed Jiang Wenyuan onto the dance floor.
The dance music is lingering, the lights are blurry and illusory, and there is a feeling of being drunk and dreaming. Peony presses her body close to him, her rising and falling chest presses against his shirt, and her fluffy hair gently passes by with the rhythm of the dance. Jiang Wenyuan's face made him excited, as if a sweet and seductive breath surrounded him tightly, making him suffocate with pleasure. Jiang Wenyuan couldn't control it anymore, his steps were erratic and he didn't follow the right rhythm. , he almost stepped on Mudan's feet several times, which made him very embarrassed.
"Professor Jiang, don't panic, relax and keep up." Mudan encouraged gently, her eyes filled with incomparable tenderness. Jiang Wenyuan was intoxicated.
The music stopped. Jiang Wenyuan was so tired that he was sweating profusely. Peony's face also bloomed as crimson as a peach blossom, she was panting, and there were sweat stains on her emerald green cheongsam.
Jiang Wenyuan apologized with an embarrassed look on his face: "I'm so sorry, I'm not good at dancing. I stretched out like an ugly duck and burdened you."
"Professor Jiang, I can see that you have a talent for dancing. You used to be a good dancer, but you haven't danced for a long time and you are rusty. In the future, you can come more often when you have time. If you dance more, you will be fine."
Mudan asked the waiter for a glass of soda water and sipped it while comforting Jiang Wenyuan.
At this time, tango music was playing in the ballroom. Mudan invited Jiang Wenyuan to dance again. Jiang Wenyuan waved his hand and said he was too tired. Shen Guofeng stood up and took Mudan's hand, came to the dance floor, and started dancing. Shen Guofeng dances very well, as if he has been professionally trained. He and Mu Dan work together very well.
The two danced superbly and moved very beautifully, which made Jiang Wenyuan secretly applauded. After watching for a while, Jiang Wenyuan felt a little tired, so he leaned on the back of the chair and slowly closed his eyes. At this time, those mathematical symbols were like tadpoles. Each one jumped into his mind, jumping in an orderly manner with the music, forming beautiful mathematical formulas, forming a very beautiful phantom pattern in the mathematical kingdom. Professor Jiang's cerebral cortex became active. His thoughts The inspiration was aroused. He opened his eyes. He immediately took out a paper and pen from his pocket, and carefully calculated the formula he had just thought of as if no one else was watching.
After the song ended, Shen Guofeng ran away without knowing it, and Mudan returned to his seat alone. When Mudan saw Jiang Wenyuan working on math problems seriously and persistently, Mudan became angry: "This is a ballroom. It's not your university classroom. What's the matter?" What's the calculation? It's really a storm."
As she said that, she snatched Jiang Wenyuan's manuscript paper and tore it into pieces. Jiang Wenyuan was angered by her sudden move, and all the inspiration that had just come to him was gone. He pointed at Mudan angrily and wanted to scold: "You, you , why did you tear up my manuscript paper? This is something I came up with with great difficulty, and you destroyed it all at once." He excitedly beat his chest and feet.
Mudan acted as if nothing had happened. She was so angry that Jiang Wenyuan gritted her teeth and stamped her feet. She really wanted to rush forward and beat her up. But Mudan said extremely seriously: "Professor Jiang, you are here to write and draw. Owner of the dance hall. If you think I don't take good care of our guests, I will be fired. You should think about me too." Mudan turned her back and wiped the tears from the corners of her eyes with a handkerchief. Her pitiful look made Jiang Wenyuan soften. That tight Her clenched fists relaxed. Mudan sobbed and said, "I'll compensate you. No matter how valuable your manuscript paper is, we can still afford it."
"To put it lightly, that is my inspiration and my hard work! It contains great mathematical inventions and creations in the future. It is priceless, can you afford it?" Jiang Wenyuan was a little nervous, and the more he talked, the more excited he became. , that sound scared everyone around.
Mudan looked at his serious and persistent look. She leaned forward and backward with laughter, holding her stomach and said: "What invention? What creation? It's so scary. Ha, ha. Ha, I'm going to die from laughing, I'm going to die from laughing. Me!"
Jiang Wenyuan felt that talking about science and mathematics with a dancer like Mudan was a waste of effort. So he turned around and left the ballroom angrily. Mudan stepped forward and took Jiang Wenyuan's hand and said, "Professor Jiang, Don’t leave! I’m not talented, but I can do the things you do.”
Mudan's voice was not loud, but this startled Professor Jiang. Jiang Wenyuan quickly turned around, stared with doubtful eyes, and said in a disdainful tone: "You can do the same! What kind of international university are you driving?" It’s a joke, pretending to be a mathematician! At most you are a dancer with great looks, outstanding dancing skills, and everyone loves you, but it’s hard to imagine that you also understand the most cutting-edge, profound and mysterious things in mathematics. You are really open-minded and slippery. What a shame!"
Peony said, "I really know how to do it. Just bring me some paper and I'll show it to you."
Jiang Wenyuan shook his head, sighed and said: "Forget it, I'd better go back and think again and calculate it again. If you can calculate it, the sun will probably come out from the west."
"You don't believe me!" Peony cried aggrievedly.
At this time, Shen Guofeng appeared out of nowhere and returned to his seat. When he saw the two people arguing, he asked what happened. Jiang Wenyuan told what happened exactly. Shen Guofeng criticized Mudan and said: "You are so That's not right. Although Professor Jiang broke the rules of your dance hall, you can only stop his behavior and confiscate his things, but you can't destroy the guests' things."
Mudan said immediately: "It's my fault, it's all my fault! I'll just compensate him. There's no need to bully others."
Jiang Wenyuan was already very angry. After hearing this, he couldn't help but sneered and said:
"Stop boasting, can you compensate? It's not as simple as a piece of paper or two. This is the wisdom and inspiration of a great mathematician, a priceless gift from God. You will never understand this!"
"Can't you let me try?" Peony asked in a low voice.
Shen Zhiping took out the paper and pen from his purse and handed them to Mudan's hand. Mudan slowly lit a cigarette, inhaled slowly, and blew out beautiful smoke rings from his mouth.
Mudan finished smoking a cigarette and asked the waiter to get a cup of coffee. After taking a few sips, Mudan picked up a pen and started writing quickly on the paper.
"Let (x, d) be a non-empty complete metric space. Let t : x → x be a compressed map on x. That is to say, there is a non-negative real number q < 1 such that for all x in x
and y, both..."
In less than a quarter of an hour, something surprising happened. Mudan had already written down Jiang Wenyuan's reasoning and calculation process. Some parts were more perfect and concise than Jiang Wenyuan's original calculation.
Jiang Wenyuan was really confused now, and he was completely confused!