When Lu Zhou looked at the Indian guy, the Indian guy also noticed him.
When Lu Zhou walked closer, he had a smile on his face, and he immediately spoke in English.
"Hey, bro, you have a good eye. Are you also in the field of number theory?"
"Kind of. Very … shocking research results. "Lu Zhou glanced at the poster and looked around. He saw that no one was interested in this place, so he couldn't help but ask," But why is there no one here? "
"Because of the arrogance and prejudice of 'Princeton people'. They can't accept that a native Indian beat them in mathematics. They even refused to let me give a report on stage for no reason. It seems that friends from across the ocean understand my feelings better, "said the dark-skinned Indian guy with a grin. He reached out his hand and said," Dijan, master's student at Jawaharlal Nehru University, what's your name? "
Lu Zhou actually wanted to say, "I don't really understand your feelings, because my research results will be presented in the form of a report on the fifth day." However, he thought about it and decided not to provoke this foreign friend.
"Lu Zhou, Jin Ling University." Lu Zhou didn't mention his degree. He reached out his hand and shook his hand. He then asked eagerly, "Can I see your thesis?"
"The thesis is here, but I recommend you to read it." Dijan patted the stack of papers in his hand and threw it aside. He then took out a large whiteboard and wrote on it with a marker. He said, "The process is a bit troublesome, but the principle is very simple. You only need to listen to me once, and you will soon understand the mystery of inverse mathematics."
"Inverse mathematics?" Lu Zhou looked at the Indian guy in surprise. He couldn't help but say, "You used inverse mathematics to prove it? I thought you studied algebraic number theory. "
"Algebra is just a tool to study number theory, it's not the only way … I know this may sound a little unpleasant to you. After all, Mr. Zhang proved the bounded distance of twin prime numbers with an algebraic method. My proof method means that not only did he walk into a dead end, but he also brought a group of mathematicians to the grave."
Lu Zhou was speechless. "… I'm not upset at all. Can you get to the point?"
Diran hung up the blackboard and turned to look at Lu Zhou, raising his eyebrows proudly.
"It's almost done!"
Just as the Indian guy was writing and drawing on the whiteboard, Lu Zhou noticed that many people were looking at him with interest and were approaching him.
With curiosity, Lu Zhou, who was standing next to the poster, looked at the Indian guy's reasoning.
In the abstract, his train of thought was very simple.
First, suppose that twin primes are finite pairs, and let the largest pair of twin primes be (Pn-1, Pn). The prime numbers within Pn are finite. Let be, and then construct a large prime number P =. Obviously, P cannot be divided by all primes from P1 to Pn. It will always be left with 1, so P is a prime number. Similarly, it can be proved that P is also a prime number. Any prime number from P1 to Pn will always be left with 1.
Since P is a prime number and P-2 is also a prime number, the two form a pair of twin primes.
Then the problem was that the pair of twin primes composed of P and P-2 was larger than the original "largest prime pair", thus denying (Pn, Pn-1) as the largest pair of twin primes.
It was like climbing a ladder. No matter how large (Pn-1, Pn) was, there would always be a pair of prime numbers larger than (Pn-1, Pn).
This overturned the hypothesis that "twin prime numbers are finite", and conversely, "twin prime numbers are infinite" was correct.
There was still a lot of process in the middle, but this was the overall idea.
Lu Zhou read the entire process on the blackboard from beginning to end.
Surprisingly, he didn't cite any existing research results to solve this problem.
This kind of thinking outside of the box was worth advocating.
But …
Lu Zhou finally understood why no one paid attention to him.
"The large prime number P you constructed can indeed guarantee that it is not divisible by a series of primes from P1 to Pn, but the premise is that Pn is the largest prime number. Obviously, you fell into a logical trap. How do you prove that Pn is the largest known prime number? "
Diran raised his eyebrows and said, "Didn't you see what I wrote in the first line? In the case of a finite pair of twin primes, take the largest pair of twin primes (Pn-1, Pn) … "
Lu Zhou: "2 * 3 * 5 * 7 * 11 * 13 + 1 = 30031."
After hearing Lu Zhou recite this line of calculations, many people in the crowd had a sudden realization on their faces. Some people had obviously guessed it a long time ago, and they couldn't help but laugh quietly at this moment.
Some people …
Started to clap.
Diran was stunned. He felt like something was wrong. He frowned and asked, "What do you mean?"
Lu Zhou sighed and said, "30031 can be disassembled as the product of two prime numbers, 59 and 509, so this number is a composite number … Did you come to Princeton at your own expense? If I were your professor, I definitely wouldn't help you fight for funding. "
Someone next to him whistled.
"Alright, please shut up."
Diran realized that he had made a low-level mistake, and his face turned red. He pulled down the poster and stuffed the things on the table into his backpack. Someone next to him whistled, but he ignored it and quickly left without looking back.
Lu Zhou shrugged helplessly.
In fact, he also wanted to tell this Indian guy why (Pn-1, Pn) couldn't be the largest prime pair from the perspective of mathematical logic. However, the Indian guy obviously didn't want to give him a chance, so Lu Zhou had to give up.
Since there was nothing to see, the crowd quickly dispersed.
Only one person was left, and he was looking at him with a smile.
When Lu Zhou looked at this person, he realized that she looked a bit familiar.
She didn't even change her clothes. It was the blonde girl who took him to the hotel yesterday.
When Molina saw Lu Zhou looking at her, she raised her eyebrows and said with a smile, "You defeated a player on the first day?"
Lu Zhou shrugged and said, "I just pointed out his mistakes. Is there a problem?"
"No, similar things happen all the time." Molina smirked and said, "This is the 'arrogant' Princeton. To show your research results here, you not only need a quick brain, but you also need a strong heart."
Obviously, she heard the conversation between the two of them from beginning to end.
What a bad taste …
Lu Zhou didn't even notice when she was standing there.
Seeing that Lu Zhou didn't speak, Molina continued to ask, "Did you come up with the algorithm on the spot? Or did you prepare it in advance and come here to snipe him? "
"I just randomly thought of it. For a genius from Princeton, this should be easy, right?"
Lu Zhou wasn't bored to this extent. He didn't study mathematics to look for trouble.
Molina raised her eyebrows and said, "You might have some misunderstandings about the word genius. The human brain is more powerful than computers in terms of logical thinking and creativity, not floating-point calculations. If someone in his research group knew a little bit about computers, they could help him find possible counterexamples. Then he wouldn't have to come all the way here. "
Lu Zhou said, "But there are no ifs, right?"
"Yes," Molina smiled and took out a piece of gum. She asked, "Do you want a piece?"
Lu Zhou hesitated for a bit before he took out a piece.
"Thank you …"
Even though people told him not to accept food from strangers when he was a kid, it should be fine here, right?
When Lu Zhou accepted the gum, Molina smiled.
"You're welcome. Since you accepted my little gift, then in exchange, I hope you can give me your email and FB account."
"I can give you my email, but I don't have an FB account … Speaking of which, is this a custom?"
Halfway through his sentence, Lu Zhou suddenly felt like he was tricked.
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