Open an aircraft carrier to fight against Japan

The waiter glared at Hilbert angrily, clutching the napkins tightly in his hands, but refused to hand them over to Hilbert. Lin Yuan looked at the two people who were at a stalemate, and felt a strong sense of absurdity. : Two of the smartest brains on earth are competing, and an ordinary waiter wants to interrupt the process alive!

Lin Yuan hurried forward and said to the waiter, "It's okay, just give him the napkin. If your manager wants to scold you, just say it was me."

Seeing Lin Yuan speaking, the waiter handed a stack of napkins to Hilbert, who saw Hilbert writing something quickly on the napkin, with joy and doubt in his eyes, the napkin quickly It was used up, and the waiter had already gone away, and Hilbert anxiously looked around for something to write on.

Zhang Yuanyi then said to Lin Yuan: "Tell him where we live and let him come to us at night."

Lin Yuan asked, "What is written on that napkin of yours?"

Zhang Yuan smiled and said, "You tell him first, and I'll tell you when he's gone."

Lin Yuan then said to Hilbert: "If you haven't figured it out now, you can go back and think about it. When you figure it out, come to us at night. We will live in the post house next to the Capitol."

Hilbert nodded repeatedly, picked up the napkin full of words written by Zhang Yuanyi, and walked out. As soon as he left, Lin Yuan asked Zhang Yuanyi, "What did you write on that napkin?"

Zhang Yuanyi smiled and said: "I wrote a total of 48 numbers, and divided them into groups of two, of which sixteen groups were twin prime numbers. Then I circled the first four groups of twin prime numbers and gave him the napkin. After arriving at the napkin, I understood that I wanted him to judge which groups below are twin prime numbers, so he started to calculate, but the amount of calculation was not small, and he soon had no room to write, so I asked him to go back and continue to calculate , come to me when you’re done.”

Lin Yuan asked: "Isn't it just a few sets of twin prime numbers? Will he really be so interested?"

Zhang Yuanyi smiled and said: "The method of finding prime numbers has been around for a long time, but there are no computers in this era, so when the numbers are very large, it is very laborious to calculate. My groups were not found in this era. He will definitely Interested in."

Only then did Lin Yuan understand that at this moment, King William II returned to Lin Yuan, handed him an invitation letter, and said, "This is the admission ticket for the Technology Expo. You are welcome to watch it tomorrow."

After Lin Yuan thanked him, he accepted the admission ticket. William II went to chat elsewhere. Zhang Yuanyi looked at the invitation letter and said with a smile, "Take me with you tomorrow."

Lin Yuan said: "These are all applied technologies, aren't you doing theoretical research? Why? Are you also interested in these things?"

Zhang Yuanyi smiled and said: "Of course, I'm going to see how the masters' outstanding ideas are ruined by these ignorant craftsmen!"

Lin Yuan didn't say much, so he agreed. At night, Hilbert came to Lin Yuan and asked, "Where's your friend today?"

Lin Yuan smiled and said, "Come with me, I'll take you to find him." Then he came to Zhang Yuanyi's room, but when he opened the door, he found it was empty, so Lin Yuan asked and The comrades who lived with him learned that Zhang Yuanyi had actually gone to the back kitchen.

Hilbert asked Lin Yuan in surprise, "Is your friend a cook?"

Lin Yuan said helplessly, "No, he's a lunatic." Lin Yuan took Hilbert to the back kitchen, and saw Zhang Yuanyi cutting potatoes, with a balance beside him. While cutting, he said to himself: "Will the thickness of the shredded potatoes affect the taste?"

Lin Yuan coughed lightly, Zhang Yuan raised his head to look at Lin Yuan and Hilbert, and said enthusiastically, "Sit down, you're welcome."

Lin Yuan glanced around. It was either pots and pans or potatoes and radishes. There was nowhere to sit!Lin Yuan said helplessly: "Let's go quickly, we still have something important to talk about."

Zhang Yuanyi just wiped the potato juice on his hands, and returned to the room with Lin Yuan. As soon as they entered the room, Hilbert put the napkin in front of Zhang Yuanyi and said, "Look, this is The results of my calculations, I have circled the twin primes."

Zhang Yuanyi nodded gently, and Hilbert asked, "How do you know these numbers? Are there any people in China who are engaged in mathematics research?"

Lin Yuan smiled and said: "Of course, we have established a university in Lushun, and there are many people engaged in scientific research in it. Would Mr. Hilbert come to teach with us?"

Hilbert shook his head and smiled, "How can this work? China is so far away, and my wife and children are in Germany. We can't go there."

Lin Yuan said: "You don't have to worry about family members. As long as you can come to teach with us, we will make proper arrangements for your family."

Hilbert shook his head and said with a smile: "Academic research requires an atmosphere. The academic atmosphere in Europe is very good now. We have regular exchanges with scientists from other countries. When we go to China, without these things, I'm afraid we won't be able to research excellent research. results."

Lin Yuan said hastily: "Who said we don't have a good academic atmosphere? We still have many excellent talents studying mathematics. How about this? Let me introduce you to some excellent results, how about it?"

Hilbert nodded slightly and said, "Please tell me."

Lin Yuan smiled and said, "You must know Goldbach's conjecture, our proof is very close."

Hilbert said: "Can any of you prove Goldbach's conjecture? I don't believe it. This conjecture has been around for many years, and no one has been able to prove it. I'm sorry. If you don't show me the proof process, I won't believe it. of."

Lin Yuan smiled and said, "No problem!" Then he turned his head and said to Zhang Yuanyi, "Comrade genius, prove Goldbach's conjecture to Hilbert."

Zhang Yuan said with a smile: "Are you kidding? Senior Chen Jingrun's proof is only the closest, but he didn't prove the conjecture to the end."

Lin Yuan said: "That's fine, you can show him the proof of old Chen Jingrun."

Zhang Yuanyi said, "I won't!"

Lin Yuan asked in surprise: "How can you not? Don't you often tell me that you are proficient in mathematics and physics?"

Zhang Yuanyi said helplessly: "Mathematicians have long lost interest in Goldbach's conjecture, so I am too lazy to do it. Let me ask you, if you let me show him the result of the proof, is it to impress him? And then get him to China?"

Lin Yuan nodded, and Zhang Yuanyi smiled and said, "Then this is too simple, look at me." Saying so, Zhang Yuanyi sat down in front of Hilbert, picked up a pen and paper, and wrote on a piece of paper. I drew a lot of symbols and equations, drew a few coordinate systems below, and drew a few lines on top.

After Zhang Yuan finished writing, he handed the piece of paper to Hilbert confidently, then turned around and smiled at Lin Yuan: "This is what mathematicians really care about—the Riemann conjecture, after years of research I found that once this problem is solved, both Goldbach's conjecture and twin prime numbers will be solved, let's put it this way, the solution of this conjecture will bring a revolution to mathematics!"

Lin Yuan thought: "This achievement is so important, it must be able to impress Hilbert." Unexpectedly, Hilbert's expression on the opposite side became more and more ugly, and he suddenly threw the piece of paper aside, then turned his head and walked away up.