Xu Yerong also did not come to class today. She had been skipping class when Yang Tian was not around. Now that she heard that Yang Tian was back, she came to class excitedly.
Then, by chance, I met Yang Tian in the corridor.
I haven’t seen her for many days, but this girl is still charming.
Wearing a long blue slim-fitting dress, the delicate lace accentuated her fair-skinned legs, which were slender and straight, and her exquisite curves were completely outlined.
She pursed her lips and traced the held hair. The lightness of her fingertips was like the liveliness of an elf. There was still a faint lingering fragrance where the hair traced, making people intoxicated.
After seeing Yang Tian, the girl held her little hands behind her back, with a bright smile on her delicate face.
Yang Tian asked in confusion: "What's the matter?"
"Hehe, you will know when you come with me."
Xu Yerong's pretty face had a cunning look, and without any explanation, she took Yang Tian's little hand and ran to a pavilion.
Then he took out a stack of three-finger-thick A4 paper from his bag, frowned slightly and said, "Well, I've been studying this problem these days. I've been calculating it for days and nights, but I still can't figure it out.
Come out, I know you are smarter than me, so I want you to help me."
Looking at Xu Yerong's originally bright and lively eyes, there were now a few strands of bloodshot eyes, and the eye sockets became like pandas.
Yang Tian said speechlessly: "How many days and nights have you been awake for?"
Xu Yerong counted with his fingers, and then said cutely: "It seems like three days and two nights. Oh, Yang Tian, please help me quickly. If you don't help me, I will go crazy."
Yang Tian was helpless, then picked up the file on which the calculation was made, frowned and said: "Four-color theorem? Are you sure you're not joking? Isn't this a math problem? Why are you, an archeology major, joining in the fun?"
The four-color theorem, also known as the four-color conjecture or the four-color problem, is one of the three major mathematical conjectures in the world.
Its essence is the inherent property of a two-dimensional plane, that is, two straight lines that intersect without a common point cannot appear in the plane. Many people have proved that five or more connected regions cannot be constructed in a two-dimensional plane, but they can
It is not raised to the level of logical relationships and two-dimensional inherent properties.
In short, it is a very difficult mathematical problem, on the same level as the Goldbach conjecture that Yang Tian once solved.
This little girl still wanted to solve it on her own, but she didn't know that it would be impossible to solve it even if she burned out her brain.
When Xu Yerong heard Yang Tianwen's question, he couldn't help but smile and said: "I joined the mathematics club, and then I volunteered to solve this unsolved problem within five days. At that time, I was provoked, and I even made a bet with others.
, Today is the last day, Yang Tian, you must help me."
Xu Yerong held Yang Tian's arm with her small hands and shook it constantly, with a bottle of oil hanging on her tempting little mouth.
Yang Tian said with a dark face: "Do you really think that I can complete this conjecture?"
"I don't care, Yang Tian, you must help me. I have completed more than half of it, and now I am only left with the last step, but I can't break through the last step of the proof. You are smarter than me, and you will definitely find a way.
of."
Xu Yerong kept acting coquettishly towards Yang Tian, and her delicate little face was still rubbing in Yang Tian's arms.
Yang Tian felt the delicate body of the girl in his arms and the fragrant scent emanating from her body. He couldn't help but feel a little weak and said: "Stop, stop, stop, okay, I'll just help you."
"Yeah, hehe, classmate Yang Tian, I knew you were the best."
Xu Yerong smiled brightly, and then kissed the side of Yang Tian's face.
The warm touch, with a hint of softness, and the bursts of fragrance.
Yang Tian was a little stunned.
After Xu Yerong reacted, she yelled.
This scream almost pierced Yang Tian's eardrum.
He was speechless and said: "You kissed me and I didn't even call you, what did you call me?"
"Bad villain, that's different. I'm a girl. You... Oops, I can't explain it. I must be crazy to act like this. Yang Tian, please forget about it."
Xu Yerong covered her pretty face that was so red that it was almost bleeding, and she wanted to crawl into the cracks in the ground.
She was just too happy, so she didn't pay much attention.
Yang Tian found it funny, but as soon as he laughed twice, he was pinched hard by Xu Yerong's little hand.
Yang Tian immediately stopped smiling, then took a breath and said, "You are really willing to use your strength."
"Humph, I made you laugh at me."
Xu Yerong looked gloating, then took out the paper and pen and said: "Oh, hurry up, we don't have time."
Yang Tian held his forehead and could only take what Xu Yerong wrote and study it carefully.
Xu Yerong just kept holding her chin with her hands, sitting on the stone bench and lying on the stone table, looking at Yang Tian with a smile on her face.
The young man is much smarter than her. He will definitely be able to crack the four-color conjecture.
After looking at it for a long time, Yang Tian finally understood the principle of the four-color conjecture.
But everything Xu Yerong has researched over the past few days and nights is wrong.
He was about to tell Xu Yerong the news, but found that the little girl was already very sleepy and fell asleep.
Yang Tian shook his head and sighed, took off his coat, and then put it on him.
He picked up his pen and began to calculate.
No one in the world has proven this conjecture. It is said that decades ago, mathematicians from country M used computers to make 10 billion judgments in 100 hours.
But the computer proved unable to give a convincing thought process.
Therefore, this is still a mountain that cannot be climbed in the world of mathematics.
But these were easy in front of Yang Tian.
He has the intelligence of a monster. He has been practicing immortality for three hundred years in the Xuantian Continent. His soul is that of a genuine Potian Immortal Emperor. He can easily solve a math problem.
When Xu Yerong woke up in a daze, she found the clothes on her back, and her heart suddenly felt warm.
However, when he saw Yang Tian being lazy there, he glared angrily and said: "Classmate Yang Tian, you are no longer a good classmate of mine. I asked you to help me prove the four-color conjecture. How did you...
·······”
Before she finished speaking, Yang Tian took out a piece of paper and stuck it on her forehead and said with a smile: "Don't come to me with such a simple question in the future."
"Oh, what a loud tone."
Xu Yerong snorted, then gave Yang Tian a roll of his eyes, picked up the four-color conjecture that Yang Tian had proved on his smooth forehead and looked at it.
After seeing the preliminary conjecture written by Yang Tian, he immediately frowned and said angrily: "Oh, Yang Tian, you wrote it wrong. Did you follow my ideas?"
Yang Tian said calmly: "All your speculations are wrong."
After Xu Yerong heard this, he said angrily: "How is it possible? The early reasoning was done by the mathematics professors of Peking University for the mathematics club. All the mathematics professors of Peking University were involved. Do you still think that all professors are inferior to you?"
?”
After Yang Tian thought for a while, he nodded and said, "It seems so."
Xu Yerong rolled her eyes angrily. She glanced at the time and her face changed again. "Oh, I won't talk to you anymore. I'm going to the mathematics club right away. I was really killed by you today. When I get there,
, will definitely be ridiculed to death by them."
With that said, after packing up his things in a mess, he picked up his bag and left.
Yang Tian said helplessly: "I have demonstrated the four-color conjecture for you, why don't you believe it? When you get here, you can take out what I wrote and it will definitely shock the whole audience."
After Xu Yerong heard this, she almost fell down. She said angrily: "It took me two days and three nights to prove the last moment according to the ideas of the professors at Peking University. You didn't follow our ideas at all. It only took one hour. Why?"
Is it possible to calculate such a huge workload?”
The girl said so much, but the summary was only four words. I didn't believe it.
The corner of Yang Tian's mouth twitched. He wasted an hour to prove such a complicated mathematical problem. This little girl didn't believe him. Why did he ask him to help just now?
Looking at Xu Yerong's leaving figure, Yang Tian's face was covered with black lines.
Then, having nothing to do, he called Xiao Ling'er and took her to the library to read.
This little girl didn't know a few Chinese characters, so she just wanted to play. She slept better than him every time in class. When he taught her a lesson, she pretended to be cute and pitiful, which gave Yang Tian a headache.
At this moment, Xu Yerong finally reached the mathematics club.
Looking at the door of the mathematics club, Xu Yerong really didn't want to open it. A few days ago, she was provoked by others and threatened to prove the four-color conjecture behind the world's three major mathematical problems.
However, the difficulty of the four-color conjecture was much more than expected. In the end, she had no clue at all. She originally asked Yang Tian for help, but he would help her solve it.
However, I didn’t expect that the other party would only cause trouble... (To be continued)
