Chapter 273: One + one

In the canteen of the Zhaicheng Space Center, it was still quiet at this moment. Although it was lunch time, few research lunatics at the Zhaicheng Space Center came to eat on time.
At the corner of the cafeteria, Zhang Zhai sat at the dining table with a bowl of beef noodles in front of him.
Zhang Zhai held his chopsticks in his right hand, and his movements were very mechanical. He repeatedly clamped the noodles, raised his hands, put the noodles in his mouth, chewed his teeth, and swallowed.
His attention is not on the food in the bowl, and he doesn't care about the taste of the food. Eating is a kind of subconscious behavior purely to supplement energy.
"Improved Sieve Method ... Improved Sieve Method ..." Zhang Zhai's eyes were out of focus, and the whole person was immersed in this thinking.
There was only such an idea in his mind, and his brain kept running.
I don't know how long it has taken, Zhang Zhai suddenly felt that her right hand, which was repeatedly eating noodles, was choked.
别 "Don't pinch, the noodles are long gone."
The familiar and old voice sounded in Zhang Zhai's ears, and brought Zhang Zhai, who was in deep thought, back to reality.
"Ok?"
Zhang Zhai's eyebrows frowned, and he lowered his head to look at it. Sure enough, the bowl in front of himself, except the soup at the bottom of the bowl, had long become empty.
Zhang Zhai raised his head again, and saw Gan Xiaohua holding the bowl and sitting in front of Zhang Zhai.
"Mr. Zhang, what do you want? Want to be so absorbed?" Gan Xiaohua ate, and asked casually.
"Consider a little mathematical problem," Zhang Zhai answered with a smile.
"Mathematical problem?" Academician Gan Xiaohua put down his chopsticks and became interested. He stared at Zhang Zhai and said, "Isn't there a lot of mathematical problems that can make you think hard for Mr. Zhang?"
让 "Let me guess, which of the seven math problems?"
"Poincaré's conjecture? Although it has been cracked, it is contradictory. If it can be found in topology, a direct proof method is also very meaningful."
Zhang Zhai heard the words and shook his head, "It is not one of the problems in the Millennium Awards, but Goldbach's conjecture."
"Goldbach's conjecture?" Academician Gan Xiaohua slumped, then shook his head with a smile and said, "Mr. Zhang, you really have courage. This is a deep pit. Since Goldbach's conjecture has been raised, For more than one hundred and seventy years, it is still enduring. It can be described as an evergreen tree in the history of mathematics. Numerous mathematicians have swarmed up and down, spending all their lives trying to prove, but all fell into the pit and never got up again.
Especially in the past fifty years, the proof of Goldbach's conjecture is basically in a stagnation state without any breakthrough progress. "
Wu Ganxiaohua said at the end, his tone was quite emotional, his expression was a little sigh.
"Listening to Academician Gan, you seem to have studied the Goldbach conjecture?" Zhang Zhai asked with a smile.
"Who hasn't had a young and frivolous time?" Gan Xiaohua's look of nostalgia appeared on his face,
"When I was a bachelor, I learned basic mathematics. At that time, I had just learned a little math and just entered the mathematical world with half a foot.
I had a chance to know Goldbach's conjecture. Then, as soon as my mind was hot, I plunged in. As a result, the more I studied, the more guilty I found that I might not have the talent for mathematics, so I transferred to the engineering department. "
Zhang Zhang Zhai heard a smile and really did not expect that Academician Gan had such experience.
"So let me say that mathematics is too vain. It's okay to use it. Really studying basic mathematics, let's forget it. If it doesn't work, I can get in for a lifetime." Academician Gan shook his head.
"Mr. Zhang, let me persuade you, Goldbach conjectures that this kind of evergreen tree that stands in the mathematical world, although it looks tempting, really doesn't need to bother to study it."
"Moreover, Mr. Zhang, if you are studying this kind of mathematical problem, you might as well study nuclear fusion directly. The difficulty is almost the same and the meaning is more significant."
"I know, I just think about it casually, what if I break it?" Zhang Zhai said with a smile.
"It's so easy. Mathematics depends on both talent and luck." Academician Gan took a mouthful and shook his head. "Mr. Zhang, your IQ is definitely much higher than most humans, but math Kind of thing, sometimes he just flashes by the aura. "
"So, how about Academician Gan, how about we make a bet?" Zhang Zhai said with a smile.
"What bet? In the face of your rich man, I have nothing to lose." Academician Gan said.
"Just bet I can break Goldbach's conjecture in a short period of time. If I lose, Academician Gan will double your salary. If you lose ... I remember that you were in the National Space Center and the Peking University Aerospace Department. There are a lot of students, right ... you can dig two over here. "Zhang Zhai said with a smile.
Academician Gan Xiaohua stopped eating noodles, looked at Zhang Zhai, stopped for two seconds, and then said decisively, "No gambling."
"Mr. Zhang, although my IQ is not as good as you, I am not a fool. You obviously have a good idea. Why should I bet on you in this case?"
Wu Ganxiaohua shook his head, "Besides, now the salary is already good, I am so old and want so much money to do. With that heart and mind to do something, this body, and no ability."
Zhang Zhai stared at Gan Xiaohua, then shook his head with a smile: "If you do n’t gamble, do n’t gamble, you must wait and see if I can solve this century-long problem in three days."
"I'll wait and see." Academician Gan resumed his noodles. "If it is successful, then Mr. Zhang will add another world-class mathematician to your long list of titles."
Zhang Zhai watched Academician Gan Xiaohua eating noodles and felt a little hungry. He had been thinking about the problem just now. The noodles that he ate did not feel much, and his stomach was still empty.
"Master, two more bowls of noodles!"
Uh ...
Zhaicheng Space Center.
Zhang Zhangzhai has been in the bedroom of the lounge for two days and did not go out. Meals are all settled in the bedroom.
At this moment, Zhang Zhai is sitting on the cold ground, thinking steadily.
The final manuscript in front of him clearly recorded that 1 + 2 had been proved, and Chen's theorem proved by Chen Jingrun (any sufficiently large even number can be expressed as the sum of the product of a prime number and no more than two prime numbers) .
But ~ EbookFREE.me ~ Last step, I have been stuck with Zhang Zhai for a day and a night.
Zhang Zhai hasn't rested this day and night, just staring at Chen's theorem, not moving!
Time is still passing, Zhang Zhai is like a sculpture, sitting on the ground, frowning.
From morning to noon, from noon to night ...
"咚咚 ..."
"Mr. Zhang, your supper." The spider's voice sounded, but the figure facing away from the spider did not respond at all.
The spider stared at the side, lunch that had been cold but did not move at all, sighed slightly, shook his head, then put the dinner down, took the lunch away, and then carefully walked out of the door.
"Click!"
The door closed again, making a slight sound.
At this moment, at this instant, Zhang Zhai, who sat all day, finally moved!
A tightly frowned brows stretched a little, the corners of his mouth twitched a little, and he smiled.
"This aura of light, I finally waited, it turns out ... things are so simple." Zhang Di whispered.
Then, Zhang Zhai suddenly shouted, "Spider, bring me another box of pens!"


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