Teacher Xu, Please Take Care of the Reckless Students in Your Class

Page 140

"Precisely, there is no escape from the 4-2-1 cycle that fell into the bottom, and there will never be such a fate."

"The reason it has anything to do with hail is because the biggest charm of hail is its unpredictability."

"A mathematician abroad found a natural number 27."

"Although 27 is an unremarkable natural number, if it is calculated according to the above method, its ups and downs are extremely violent: first, 27 has to go through 77 steps of transformation to reach the peak value of 9232, and then go through 34 steps to reach the valley value. 1."

"The entire transformation process, also known as the hail process, requires 111 steps, and its peak value is 9232, which is more than 27 times the original number 342. If it falls in a waterfall-like straight line, that is, 2 to the N power, come By comparison, the number N with the same hail distance must reach the 2th power of 111."

"After the game's verification rules, people found that only in both..."

"..."

"Number sequence verification method, this method is a verification method established according to the verification rules of the hail conjecture, and uses an infinite number sequence to deal with infinite natural numbers."

"The first item is even and the tolerance is even, then all the natural numbers on the sequence are even, and the whole sequence is divided by 2. If the first item is odd and the tolerance is even, then all the natural numbers on the sequence are odd, and the whole sequence is multiplied by 3 plus 1 ."

"If the tolerance is odd and the first item is odd, then the odd-numbered items must be odd, multiply by 3 and add 1, and the even-numbered items must be even, then divide by 2."

"If the tolerance is odd and the first item is even, then the odd item must be even, then divide by 2, the even item must be odd, then multiply by 3 and add 1."

"According to such calculation rules, there will be many new problems that will test the IQ of the validator."

"For example, the general term formula for even numbers is 2n, because they are all even numbers, so divide by 2 to get n, which is a natural number."

"..."

Although Yu Chuyao's talent in mathematics is not that high, her basic knowledge in these conjectures and theories is still very solid.

The reason why Yu Chuyao talked so much to everyone was that he was trying to buy time for Xu Heng, and at the same time, he was also transferring the pressure.

Otherwise, everyone will not speak and stare at Xu Heng with big eyes and small eyes, which will definitely bring unimaginable pressure to Xu Heng's mental side.

Yu Chuyao thinks about Xu Heng all the time.

but--

Just when Yu Chuyao was talking about popular science for everyone, Xu Heng suddenly raised his head and looked at Meng Liangshan and Hong Yangjun.

"Second old man, how far have you studied?"

At the same time, Xu Heng also added what Yu Chuyao said, "The hail conjecture involves many aspects, in a broad sense, 3x plus 1,3, 3x plus [-], etc..."

Meng Liangshan also sucked in a breath at this time, "Yes! It is indeed too difficult!"

Hong Yangjun also nodded, "There is a promising mathematician who has been working on and reporting conjectures. He said don't try to solve these problems! Because it is too difficult! Mathematics has not reached the point where it is enough to solve these problems!"

"There are even many people in the circle who have generated and reported that it is the next Fermat problem!"

They were talking about the difficulty of the hail conjecture.

Everyone looked at each other in surprise.

"Elder Hong, Elder Meng, isn't it difficult for you to be strong?"

"Mr. Xu Heng... ah ah! He! He! He! He! He started writing! Did he think of something? Ah ow—"

Zhu Ruiyun almost turned his back, and almost didn't come up in one breath.

Swish swish!

Suddenly!

Everyone's attention returned to Xu Heng!

To be precise, it all focused on Xu Heng's hands.

WOW!

The sound of the nib touching the paper is exciting.