Chapter 71: Under the stage

The return road is long, and the French sycamore trees are densely green.
Lin Chaoxi carried a backpack and walked in the shade of the trees. There is a long distance from the hospital to the university town lecture hall. You can take a bus and take a bus. But after a tossing in the hospital for an afternoon, the lecture time of the mathematics of the basic university was already over, and she simply did not worry, and slowly walked back.
The summer wind is soft, the boys and girls are passing by, the black hairy clothes, people want to eat an ice cream.
Lin Chaoxi licked his mouth, turned left and walked into a convenience store.
She stood in front of an assorted freezer for a while, thinking of eating a strawberry-flavored eight-up or crispy dream dragon.
The door slammed open and the cockroach came in.
Lin Daixi and his eyes, the first reaction is the fate of this ghost.
He was on the phone and saw her. After politely nodding his head, he went straight to the water tank. His goal was clear. He took a bottle of mineral water and went to the checkout counter. After the dripping of the cash register, he paid the bill and then left.
That was probably a scene that was later played back in Lin’s mind.
From beginning to end, Yan Zhidu is talking on the phone. He uses low and smooth English to talk about content that she can't understand at all, and because of her modest and casual attitude, she has no boastful elements.
He left the checkout counter and turned his head slightly, grabbed the phone with his shoulders, freed his hand to unscrew the cap, and then drank a big swig.
She is clearly next to him, but he does not have any meaning to find someone to do it. Even before leaving, he still does not forget to nod her again.
Shifting the door and closing the switch, he left the convenience store and walked into the thick green shade.
Lin Zhaoxi looked at the handsome and straight back of the boy, watching him go to the distance until it disappeared.
The air-conditioning of the convenience store's cool silk dropped from the air outlet, and Lin Chaoxi took back the line of sight and looked at the dazzling cold drink in front of her eyes. Whether it was vc drink or WeChat, she had all the girls with or without the heart dissipated.
She didn't feel that she didn't stop to hang up and talk to her. There was any problem. Nodding, this is their normal distance now. There have been countless times, and she has had such an opportunity to pass by, and there is nothing in it.
Lin Chaoxi opened the freezer and changed a sweet strawberry cone to comfort himself.

Until I sat down in the No. 1 lecture hall, the lights dimmed, and Lin was only able to understand about it, and whoever called it to the phone.
This is the third time she saw it today.
The young man put on a formal smoky gray suit and white shirt, rolled up his sleeves, didn't tie, and looked very handsome and clear.
In front of his suit, he seemed to be ignorant of the school badge of Sanwei University. He was leaning slightly and debugging the projector with the staff of the lecture hall. His eyes focused on what he said with the staff around him. When the slides on the screen stopped, he returned to the original page in a short time.
p/npandthesearchfortheimpossible
Byandyhoward
There are two lines of white on the blue bottom.
The presenter, Mr. Howard, is a professor of mathematics, a mathematician and a senior contributor. He has in-depth research on the p/np issue. This is what has been indicated in the lecture publicity, but the lecture does not indicate that this lecture is The translation is 裴.
The seat under the stage was dim, and Lin’s hand was placed on the seat partition. Her hand was a mobile phone that had been tuned into a silent mode. On the screen, the college WeChat group constantly refreshed the photos taken by the fans at the playground.
The scroll is wearing a jersey, and under the headlights of the studio, the posture of the shot is constantly shot, and the whole person is born with light.
Lin Zhaoxi finally looked at the phone and turned it over and looked up.
Six o'clock.
There was no complicated opening ceremony for the academic lectures. I took the microphone and went to the stage, standing in front of the curtain.
He fainted and greeted the audience. His face was illuminated by the projector's spotlights, so he looked more upright and handsome.
Ning and Rushui’s voices flowed out:
In 2000, the American Cray Institute of Mathematics published seven major mathematical conjectures and offered a reward of $1 million for each problem in order to find answers. They are countless people in mathematics. The peak of the top, the solution of each problem, is destined to change the course of mathematics development. The p/np problem is also among them. We are fortunate enough to invite Mr. Howard, a tenured professor of mathematics at the University of H, to introduce this world-class mathematics. problem."
The introduction of the singer was simple, but the applause sounded, and he naturally retreated to the side.
There are no fans here.
The lectures on the nature of science popularize people from all walks of life to listen to it. Lin Xia almost sat in the last place of the hall, looking around and seeing a lot of white-haired old people and students with very tender faces. Among them are teachers, professors, and students wearing Yongchuan high school uniforms. Each person has paper and pen on the seat partition, and everyone is applauding.
Professor Howard, who had a big belly, came to power in a round of applause. He stood in front of the slide side and his applause slowed down. He smiled and said hello at the place, and he also introduced his translations with great grace.
The lecture hall was quiet again, only the light on the podium.
Professor Howard began to talk about the definition of the p/np problem. In the popular science lectures, they did not tell complex mathematical definitions, but explained them with very simple concepts.
If p = np, it means that humans can quickly calculate the solution to any problem.
He took the idea of ​​cancer treatment and described a need for chemotherapy, which can confirm the normal cells and cancer cells by simply detecting DNA, so as to create specific proteins, effectively starve cancer cells, and eliminate them. the way.
This new treatment will make cancer treatment more efficient and targeted, without side effects on cancer patients and, more importantly, it will be cheap and affordable for every cancer patient.
The imagination of this treatment plan depends first on an algorithm that can effectively solve the np problem, namely p=np.
The simple everyday English forest sounds no problem at all, and along with the translations from the rumors, Lin Chaoxi can gradually see such a simple and efficient world.
She also finally understood what Lao Lin said, if such an algorithm appeared, then Alzheimer's disease, which is a problem of β-precipitation-like protein precipitation, should also be cured.
There was a cheering picture on the slide, and all the audience under the audience began to applaud and laugh.
On the stage of the speech, Professor Howard and Howard looked at each other and showed a clear and calm look to each other.
The following explanations are more in-depth, from p-question, np problem to npc, from time complexity to time-complexity polynomial level, the lecture begins to extend to the real mathematics field, and Lin Zhaoxi can understand through the translation of the 裴 裴Some, but gradually, she felt struggling.
Although Professor Howard has found a lot of examples to explain a lot of content, Lin is very clear that she does not have the knowledge reserves to understand those technical terms. She has left the mathematics world for too long, and in some respects is not even as good as an ordinary high school student. .
In the end, whether they are the presenter or the translator, their expressions are more calm and clear.
The final extended content was too difficult for her, so some bright images overlap and she began to distract.
I always felt that there was a similar picture in my memory. At that time, she and her shoulders were shoulder-to-shoulder. She was still young, her face was clear and white, and she looked at the old man in the projection screen with a confused but sly look.
Time and space reversed.
Ten years later, she was still sitting under the stage, and he was already standing on the stage. 2k novel reading network