Scholar’s Advanced Technological System

At 8: 30 a.m., the staircase room was almost full.

The ark found a position in the rear row and sat very low.

At 8: 50, the staircase room was empty, and someone moved a stool from the next classroom and sat on the walkway to listen.

It's not even just our school, even the folks from several colleges next door have come to dash classes.

As you can see, Professor Changming is quite popular.

At 9: 00, the lecture officially began, looking at the old gentleman on the podium, the more familiar he looked at the ark, the more he always felt there was an edge. But it was too far apart, and with the possibility of changing clothes, he couldn't remember where he'd seen it.

PPT started showing, sitting next to her in the middle of nowhere, finally stopped chatting to her roommate on the other side and reached into her bag to get her notes and pens.

At this point, she saw the ark next to her and suddenly stunned.

After a few more glances, she whispered, “Classmate, are you an ark? ”

The ark stunned and nodded: “Yeah. ”

The girl's eyes lit and she whispered a little excitedly: "Are you… are you a 13-year-old ship? ”

“Yes… what is it? ”

“No, nothing.” The elementary school girl shook her head.

It's okay. What do you want me to do?

The ark was speechless, turned over the little book, and began to take notes.

“ …… ”

Ark: “…”

I wondered if it was his illusion. I always thought the two first-grade sisters next to him were peeking at him, and I was excited to whisper, pointing to a little whispering.

The ark sighed in its heart.

Is that the problem with celebrities?

Feel…

Not bad?

Fortunately, they didn't talk too long, and soon the conversation went somewhere else.

The ship automatically shields the outside interference and focuses attention on the lecture itself.

By the way, Professor Ren had just finished his introductory remarks, and he had not missed much.

“… we all know that prime numbers are natural numbers that contain only two factors, and you may have crossed the prime list of the first 100 digits in junior high school. The twin number refers to the prime number pair with a difference of 2, that is, p and p +2 are prime number pairs. For example, 3 and 5, 5 and 7, 11 and 13, 17 and 19, etc. As the number increases, fewer pairs of twins can be observed. ”

“There are eight pairs of twins within 100, and there are only two pairs between 501 and 600. As the prime number increases, the next prime number should be further and further away from the previous prime number, but as famous and important as the Gothenbach guess, there is an infinite number of multiple pairs of primes, which differ only by 2, for example 3 and 5, 5 and 7, and even this…"

Speaking of which, Professor Ren wrote down a line of numbers on the board.

[2003663613x2195000-1 and 2003663613x2195000 +1]

Turning back, he smiled and continued.

“There are an infinite number of primes with a difference of 2, which is the famous twin number guess. ”

Until now, Professor Ren has spoken of shallow knowledge, which can easily be followed even by an ark with no in-depth study of twin counts.

The same goes for other freshmen in freshman year, whether they're math or non-math amateurs, who listen with interest.

Soon, however, the content of the lecture began to deepen.

“… twin count speculation has always been a problem that haunts the mathematical community. Only last year, however, there have been groundbreaking developments in research on this issue.” Professor Ren smiled and turned to the next page of PPT, continuing, "Chinese mathematician Mr. Zhang Yidong proved a weakened form of twin count, discovering that there are infinite number of prime pairs less than 70 million, thus achieving a breakthrough from none to none on the path of twin count guessing this important problem. ”

Speaking of which, Professor Ren pushed the glasses and put Mr. Zhang's certification process on the blackboard.

[Define theta (n) = lnn if n is prime; Define theta (n) = 0 if n is plural. Take function lambda (n) = …, define S1 (x) = …, S2 (x) = …]

[Request S2 − (log3x) S > 0...]

……

Looking at the growing formula on that blackboard, the students who could understand it before, suddenly squeezed.

Like the elementary school girl sitting by the ark, with a face, "Who am I? Where am I? What am I listening to?” The expression. It's like you just missed a second, but you feel like you missed the whole world...

The ark was able to follow the thinking of the last professor.

Simply put, that Mr. Zhang cleverly chose a lambda function, successfully proving that for k > = 3.5 * 10 ^ 6, conclusion S2 − (log3x) S1 > 0 was established.

In this way, listing the first 3.5 * 10 ^ 6 prime numbers as an acceptable set further demonstrates the existence of infinite number of prime pairs with a difference of less than 70 million.

“According to the method of proof left by Mr. Zhang, by now Mr. Zhang's k > = 3.5 * 10 ^ 6 has been reduced to k > = 50. In other words, the figure of 70 million was reduced to 246. The rest of the work needs to be done. ”

Speaking of which, Professor Ren laughed and left the chalk head on the table, "Perhaps the great one who did this historic job will be among you. ”

“I look forward to that day! ”

Psst, psst!

Applause thunder moved.

The audience under the stage applauded.

Whether you hear me or not, just clap your hands at this time!

Of course, a lot of people understood, and there was a thoughtful look on their faces.

Ark, for example.

Twinnin number speculation is only a primer, and this semi-scientific lecture is not an academic presentation, but focuses on stimulating students' passion for mathematics.

Professor Ren spoke from the twin count speculation to the Gothic speculation, and from the Gothic speculation to recent developments in domestic play theory today, as well as some more cutting-edge research results.

I have to say, the old professor does have some ink in his stomach.

Something obscure that even beginners can listen to.

However, the contents of the second half of the lecture, compared to the contents of the first half, were so little nutrition that the ark did not listen very carefully at all. At this moment, his mind is still on the proof of that twin count speculation.

Thinking about the last time I found it in the library, staring at the blackboard formula of the ark's brow locked, I felt what I found in the underworld, but always at the moment when I was about to grab it, let it slip away from my fingers...

The lecture is almost over.

Student union people took the list to the first row and started counting check-ins.

When the ark was signed in, he couldn't wait to rush to the library, but was stopped by the junior sister who had just sat next to him.

“Senpai, Senpai, wait, that, can I add your buckle? ”

Without wanting to waste time, the ark wrote a string of buckle marks on the draft paper she had handed over, and then gave her no chance to continue talking, and quickly disappeared in the gaze of the schoolgirl.

However, as soon as he left the house, he was stopped by another person.

This man is not someone else, he is the professor who just gave the lecture.

From the smile on the old man's face, he should have waited for him outside the staircase room for a while.

“Oh, boy, we meet again. ”

Ark:????

We've met?

I think I've seen it somewhere...

Without waiting for the ark to react, Mr. Ren continued to speak.

“Boy, are you interested in rockets? ”

The ark, which was just thinking about the twin count, was surprised by this sudden problem.

Nima, is this about making yourself an astronaut?

That won't work!

The ark smiled awkwardly: "Uh, Professor, I don't want to go up to heaven yet. ”