The Science Fiction World of Xueba

Coming out of Zhang Yitang's room, Pang Xuelin smiled and shook his head.

He could feel the ever-burning fire in the old mathematician's heart.

Perhaps it is because of this that Zhang Yitang was able to do such an outstanding job after half a rough life.

Moreover, he faintly felt that the reason why Zhang Yitang proposed the idea of ​​an academic competition between the two parties was not to win himself.

After all, whether it is the familiarity with Ponzi geometry, or the energy and thinking activity of both parties, they are hardly at the same level.

He just hopes that he can set his sights on this field that he has studied for many years, and hopes that one day, the twin prime number conjecture can be solved in his own hands.

In the following month, Pang Xuelin started his itinerary for giving lectures.

Stanford University, University of Chicago, University of Pennsylvania, Yale University, Harvard University

During this period, in addition to using Ponzi geometry to find ideas for solving the twin prime number conjecture, he kept writing papers related to the twin prime number conjecture.

It's just a pity that after a month, he still has no clue.

Mathematical problems are like this, and it doesn't mean that you can solve it if you have perfect tools.

Sometimes inspiration is more important than skill.

Until October 31, Saturday, Pang Xuelin arrived in Princeton.

In the real world, Pang Xuelin only came to Princeton to attend a few academic conferences when he was studying at UCA, but in the world of rural teachers, he would live in Princeton for several months every year.

Therefore, Pang Xuelin is no stranger to this beautiful and quiet town.

Pang Xuelin's report in Princeton was scheduled for November 2. After Pang Xuelin stayed at the hotel, he declined Deligne's invitation to have dinner.

After thinking about it, he took out his phone and sent Qi Xin a WeChat message, "I'm coming to Princeton, please come out for dinner tonight if you're free."

Princeton, a student apartment.

Qi Xin was poking her chin, looking at the photos on the computer desktop in a daze.

This is a photo of her and Pang Xuelin at the Millennium Awards Ceremony in Paris, France.

At that time, she was wearing an evening gown, and Pang Xuelin was wearing a suit and leather shoes. They were handsome and beautiful, just like a pair of lovers.

At that time, she thought that if she and Pang Xuelin went on like this, maybe one day they would enter the palace of marriage.

But I didn't expect good fortune to trick people, and in the end, the two still failed to get together.

Qi Xin even regretted a little, if she had been braver and confessed to Pang Xuelin earlier, maybe the one with him now would not be his childhood sweetheart, but herself.

Only now, regret is useless.

In the past six months,

Qi Xin tried hard to get Pang Xuelin out of his mind.

But the more you want to forget, the harder it is to forget.

She has been in Princeton for more than half a year. With her appearance, there are not a few people who pursue her. Among them, there are some very good members of the opposite sex in terms of their own conditions and family background, but Qi Xin has no feeling for them.

She can only put all her energy on study, use study to consume her energy, and prevent herself from thinking wildly.

But as long as Pang Xuelin's information appeared on the Internet, she would still click on it involuntarily.

During this period, Pang Xuelin came to the United States to participate in the award ceremony of the Cole Algebra Award, and Qi Xin was there all the time.

Even after learning that Pang Xuelin was going to give a lecture in Princeton, Qi Xin got a ticket for the lecture early through his friends.

It's just that Qi Xin has been hesitating whether to contact Pang Xuelin.

Meet each other, have a meal, say hello, and then say goodbye, leaving only sadness

Qi Xin shook her head, she hesitated.

At this moment, there was a ding dong, and a message appeared on WeChat.

I'm coming to Princeton, are you free tonight, would you like to come out for dinner?

As soon as he saw the sender's name, Qi Xin's heart beat quickly, and a kind of joy mixed with grievances and various indescribable complex emotions came to his heart.

Qi Xin picked up the phone and was about to reply when there was a knock on the door.

Qi Xin thought for a while, got up and opened the door.

Appearing in front of her was a beautiful Asian woman whose appearance was not inferior to her own in the slightest, with a perfect figure and a little more mature charm than herself.

"Miss Zhi, why are you here?"

Qi Xin met Wang Zhi a month ago. He only knew that the other party was a third-generation Chinese. He was a graduate student in the Department of Mathematics at Harvard. Because of a bad relationship with his tutor, he transferred his studies to Princeton and became a Princeton mathematician. Graduate students of professors.

Wang Zhi lives next door to her, maybe because they both have yellow skin, or maybe because they are attracted to each other, after meeting a few times, the relationship between the two quickly became familiar, and they became good girlfriends who talked about everything. .

Qi Xin even told Wang Zhi about her crush on Pang Xuelin.

As a result, Wang Zhihao laughed, saying that she had beaten a good hand of cards, and if it was her, she would have put Pang Xuelin in bed long ago.

Qi Xin just smiled at this. This sister Zhi has rich emotional experience and has a set of methods to seduce men. After she came to Princeton, many teachers and students in Princeton were fascinated by her.

Wang Zhi entered the room carelessly, and said with a smile, "I heard that the male god you have a crush on has come to Princeton, do you want to ask him out to play?"

"ah"

Qi Xin blushed pretty, and said, "No, I will not bother him anymore"

Wang Zhi blinked and said, "Could it be that you have already asked him out, and you want to avoid me on purpose?"

"Where is there"

Qi Xin was a little emboldened.

"Then what are you doing behind the phone?"

Wang Zhi was grinning, and in a sudden flash, he got Qi Xin's phone into his hand, and opened WeChat to read it.

"I'm coming to Princeton. Are you free tonight? Would you like to come out for a meal? Oh, not bad. It's actually him who took the initiative to invite you, Qi Xin. This is a great opportunity."

"What a great opportunity, sister Zhi, please return the phone to me quickly"

Qi Xin pretended not to understand.

Wang Zhi smiled and said, "Let me help you reply. With your temperament, you want to go in your heart, but you can't let go of the reservedness of a girl on the surface. With you like this, how can you snatch the male god?"

After all, she directly replied via WeChat, "Okay, see you at the Witherspoon Steakhouse on Nassau Street at 7:00 p.m., and I'll take a friend there at night."

"Sister Zhi, how can you do this, I'm really angry"

Qi Xin stomped.

Wang Zhi smiled and said, "Okay, Xiao Xinxin, don't be angry, here, return your phone"

Qi Xin took the phone, looked at the reply, and said a little strangely, "Sister Zhi, you are going tonight too"

Wang Zhi smiled slightly and said, "I am also a student of the Department of Mathematics. I just happened to meet the legendary God Pang. Don't worry, I won't steal your male god. You don't mind bringing a light bulb?"

Qi Xin rolled her eyes and said, "You have already replied, what else can I say."