"Junxin, you bastard!!" The sound of more than 100 decibels made Junxin, who had just left the laboratory, involuntarily cover his ears.

"Mengxue, be quiet." Junxin said a little embarrassed.

It started more than a week ago. At that time, Junxin's paper had just been published, and after Gu Mengxue knew about it, she found Junxin out and booked a small restaurant near Mizuki, which was counted as a celebration with Junxin, but Junxin forgot about the celebration that Gu Mengxue had prepared for herself because of a small problem that suddenly appeared in the research.

When Junxin remembered it, what he saw was the scene where Gu Mengxue had come back to him angrily to settle accounts. Junxin suddenly felt a little empty in his heart.

The 80s were not the era of extreme development of electronic communication technology, and in China, telephones were only the preserve of a few people. There is not even a shadow of a mobile phone or anything. Gu Mengxue couldn't contact Junxin to inquire about the situation, so naturally she didn't wait for Junxin at the agreed time.

So Gu Mengxue, who was so strong, thought that it might be because of an experiment or a sudden inspiration that Junxin fell into deep thinking and forgot the agreement for a while. But she still couldn't let go of this breath in her heart, so after apologizing with her boss several times in a row, she went all the way to Junxin's laboratory in a rage.

"I'll be quiet, you bastard, let me wait for you for more than three hours!"

"Isn't that what happened here?" Junxin weakly defended, but seeing Gu Mengxue's angry appearance, although Junxin's EQ was slightly lower, he also knew that now was not the time to explain, so he simply shut his mouth.

"Something, something! Do you have a big deal here? Growing up, no one has dared to put pigeons on me, you bastard..."

"Yes, yes, my Mengxue beauty, Junxin has made you wait for a long time, I missed the appointment, it's me who is not good, I deserve to die. But please don't be angry with my beautiful, beautiful, comfortable, and quiet little Mengxue, okay? ”

"Humph!"

Junxin, who has experienced the Internet explosion era in the 21st century, although his emotional intelligence is slightly low, he still knows a little bit about how to coax girls. At that moment, he tried his best and spent a long time to finally calm down the angry Gu Mengxue. But with that came a large number of unequal treaties.

In fact, Gu Mengxue is not really angry, living in a family like hers, she always knows a little bit about the situation in the scientific research community, so she has long expected a person like Junxin who is immersed in research. So it's not as angry as I imagined. However, she also wanted to know what kind of status she had in Junxin's eyes, so she pretended to be a little angry on the basis of a little anger, and the result made him quite satisfied.

In fact, in real life, there are often such scenes, men and women like each other, in fact, it doesn't matter how many unequal treaties they sign, and the other party can't really talk about treaties all the time, but they just want to know if you care about her.

Gu Mengxue, who was angry, saw Jun Xin with a bitter look on the side, and secretly happy in her heart, and asked Jun Xin, "What were you studying just now?" How can you be so engrossed? Forgot about the celebration we had with dinner? ”

Jun Xin had a bitter face, still thinking about the unequal treaty in his heart, and finally breathed a sigh of relief when he heard this, and said: "I was thinking about tying my shoes, and I found something very interesting. ”

"Huh?" Gu Mengxue looked dazed.

Junxin explained: "Didn't you give me a pair of sneakers as a New Year's gift a year ago, I haven't worn them, today I want to go on a date with you, so I thought of these shoes, so I took them out, and when I was ready to wear them, I made an old mistake, and I have been studying the matter of tying shoes, and I forgot to go to the appointment!" ”

"Uh, what's going on?" It's okay not to explain, but as soon as she explained, Gu Mengxue instantly felt that there were more problems in Junxin's words.

"I used to wear cloth shoes and stuff like that, and I didn't think anyone would give me a pair of sneakers, so I wore them for the first time."

"Naturally, it was the first time to tie your shoes. However, when I was tying my shoes, I suddenly realized that tying my shoes is also a mathematical problem, which is the famous kink problem in mathematics. ”

"Kinks?"

"Yes, it's a kink problem."

"A kink is what that knot means, right?" Gu Mengxue gestured.

"That's not the strict definition, of course, but you can understand it this way." Jun Xin smiled and said, "Kink, the definition of math is quite complicated, so I won't talk about it, but you can also think of it as a matter of tying a knot according to your understanding." ”

"We've been using knots for a long time, but we've been working on it since the end of the 19th century."

"In the second half of the nineteenth century, there was a popular structure in physics that atoms were made up of axes that could be knotted, and that different atoms had different knots. This prompted a large number of physicists to study the problem of kinks, and in 1899 a table of knots with no more than 10 intersections was published in 1899. Although it was finally proved that the atomic model of the kink structure did not exist, physicists took over the problem of kinks by mathematicians, and in 1969, the famous British mathematician J.H. Conway discovered a new representation of knots, and he gave a table of knots that did not exceed one intersection of prime kinks. ”

"So far, mathematicians have not been able to distinguish between the kink of the trefoil knot and the mirror structure, and the problem has been stuck in this place and has not been effectively solved."

"You're done?" Gu Mengxue's eyes lit up, and she said in a surprised tone.

"Haha, Mengxue, you think too highly of me!" Junxin shook his head, "Kink is a research field that I am more familiar with, I started the research of kink a long time ago, and now I can only say that there has been progress, and I don't know how to wait until the Year of the Monkey to really solve it!" Junxin shook his head and said.

Kink is indeed a subject of great research value. One of Princeton's many contributions to the Institute for Advanced Study is the study of the connection between kink and string theory in quantum physics. As a disciple of the Pope in the field of mathematical physics, Junxin's research on kink problems naturally far exceeds that of other ordinary researchers.

"I just had some inspiration for the topic of kink theory, which was really about finding a strong problem to distinguish between different kink invariants that were easy to calculate. I have a hunch that such invariants will have a very big effect. Not only can I distinguish the trefoil structure, but I can also distinguish the mirror kink structure, and I feel that it may have a strong connection with quantum physics. ”

"And what are you doing now?" Gu Mengxue asked.

"It's not!" Jun Xin replied unexpectedly, "It is very time-consuming to find such an invariant, and the first thing we need to do is to find a kink table with 13 intersections. On the basis of a full understanding of the kink, after doing a full deduction, finally find the invariant. ”

"I'm not going to do it myself this time, though!" Jun Xin smiled slightly, "The task of finding the kink table of thirteen intersections will be handed over to Donglai, I asked him to study mathematical physics some time ago, and it's time to get him some tasks!" ”

Wei Donglai, who was in class far away in the classroom, suddenly felt a chill behind his back, feeling that something was about to happen.