At meal time, Chen Zhou also took the opportunity to go out of the library to breathe.

Since returning to Yan University, he has been fighting in the library for nearly 8 hours in a row.

Except for lunch at noon, I stopped writing.

The rest of the time, so to speak, is non-stop.

But fortunately, the thinking during military training gave him a guarantee of calculation efficiency.

As long as his mind doesn't fall, then he can keep pushing towards the hinterland of hail conjectures.

It can be said that wherever the idea goes, Chen Zhou's proof will go.

Now he is indeed a little tired and needs a short rest.

By the way, adjust and adjust, and then sort out the ideas.

The two of them each asked for beef noodles in the cafeteria, plus a ham sausage.

After coming to the seat, Yang Yiyi asked curiously, "How is it?"

The first URL

Chen Zhou bit off the noodles and raised his head to look at Yang Yiyi: "It's okay, the current progress is quite smooth, according to this idea, there will be results in the next two days." ”

"Wow, really?" Yang Yiyi asked in surprise and delight.

This was the first time she heard a positive answer from Chen Zhou's mouth after Chen Zhou began to study the hail conjecture.

Before, Chen Zhou either said that the idea might not be right, or that this thing couldn't be counted at all......

Then, she just watched Chen Zhou fall into the study of the hail conjecture, but she was never able to find a solution.

But now, Chen Zhou seems to be very close to the goal.

How could this not surprise her?

Chen Zhou nodded slightly, and then laughed softly: "I didn't expect that a military training would provide me with ideas to solve the hail conjecture." ”

Yang Yiyi asked with a puzzled face: "The ideas provided by military training?"

Chen Zhou said: "During military training, didn't our 7th Company contact the change of queue formation in the middle of the playground?"

Yang Yiyi nodded: "Well, then you will still be standing at the front, I will see you at a glance." ”

Chen Zhou smiled: "It's that triangle formation, what do you think that formation looks like?"

"Like what?" Yang Yiyi thought for a moment, isn't it just a triangular formation? There are too many things like triangles.

For example, she likes the ice cream cone, which she likes, which can also be said to be triangular.

Thinking of this, Yang Yiyi blurted out: "Like a cone ......"

Hearing this answer, Chen Zhou was slightly stunned, and then laughed out loud, this girl is really a foodie.

Looking at Chen Zhou, who was laughing, Yang Yiyi wrinkled her delicate nose: "Isn't it?"

Chen Zhou stopped laughing: "Yes, yes, it's really like a cone." ”

Hearing this, Yang Yiyi stuck out her tongue: "After a while, can you eat one?"

Chen Zhou thought for a while and said, "Okay, buy a cone for you, a foodie." ”

Chen Zhou and Yang Yiyi's agreement is that although ice cream is delicious, they should eat at most one a day and should not be greedy.

But today is the day to return to school after military training, and an exception can be made.

After the ice cream was full, Chen Zhou and Yang Yiyi returned to the library again.

Rarely, the old position of the two of them is still there.

There is no need to go to the study hall to find a place.

After sitting down, Chen Zhou took out the draft paper for the afternoon and quickly immersed himself in it.

After analyzing the tables obtained before leaving in the afternoon, Chen Zhou obtained the proportion of odd numbers of eligible a>a in the n-level as the number of hail conjecture operations increased.

This proportion is getting bigger and bigger.

But will it end up equal to 1?

With this doubt, Chen Zhou thought about it for a while, and then began to write:

[If the tick Sm is used to denote the sum of the odd proportions of the first m terms, then when m is →∞, there is limm→∞Sm=1]

After writing it, Chen Zhou marked it again.

Because this notation does not mean that ∞ m really tends to infinity, but that this number will tend to a positive integer to be determined.

The proof of this inference is carried out by relying on the table.

Chen Zhou looked at the table while holding a pen and kept writing relevant conclusions.

In the table, the proportion of each row can be recorded as a number column.

And Chen Zhou is looking for the general term of this number series.

【...... r is the row indicator, n is the element indicator of the series, and its general formula is ar, n=/2^. Here kk,c denotes the molecule in ak,c ......]

The pen in his hand also kept wandering on the scratch paper with his thoughts.

It's just that it's not like the previous pen walking dragon snake.

Where the idea goes, the pen goes.

With the in-depth study of the hail conjecture, Chen Zhou's thinking gradually could not keep up with the speed of the pen.

He also thinks for longer and longer.

After staying in the library until closing time, Chen Zhou dispelled the idea of continuing to work hard.

There are some things that need to be sorted out a little more.

To do this, you also need to verify it.

After returning to the dormitory, Chen Zhou put his backpack on the chair and didn't touch it, but took the basin towel and went to take a shower.

After taking a shower, Chen Zhou fumbled and took out something from his backpack, and then turned over to bed.

Zhao Qiqi and Li Li are still reading.

Since the three of them returned to school, they lay on their beds for a while.

Compared with the hard beds in the military training base, they still prefer the comfortable beds they make.

So, the three of them are in good spirits now.

However, they also consciously did not disturb Chen Zhou.

It can be seen from Chen Zhou's performance that in addition to saying hello, he ran to the library as soon as he got out of the car.

Then, they all came back from the library, and they didn't even say a word to them.

Obviously, there is something very important.

Chen Zhou, who didn't know what these three people were thinking, was lying on the bed at this time, frowning and thinking about the hail conjecture.

He is straightening out the follow-up ideas.

Along the way, including when he came back to the present, his mind was full of hail conjectures and research ideas.

This is also the reason why he didn't talk to Li Li and the others after he came back.

After a while, I saw Chen Zhou's originally frowning brows slowly unfolding, as if he had straightened out the mystery.

He glanced at the object he had taken out of his backpack, thought about it, and slowly opened it.

Originally, Chen Zhou planned to either go down this line of thought and go to the end, or this line of thought would not work and go to death.

He will open the set of mistakes to verify whether the idea of going to the end is really correct, or what is wrong with the idea of not working.

But now, after Chen Zhou straightened out his thoughts, he had seen the final result of this idea.

At least in his opinion, there should be no problem.

Now, then, it is necessary to examine the results of the nearly 12 hours of work in this day.

If the front is wrong, then there is no need to continue the rational thinking in the back.

But if the previous ideas, calculations, proofs, arguments, etc., are all right.

The solution of the hail conjecture is close at hand.

Chen Zhou's hand trembled slightly.

Well, this set of mistakes has been eating fat lately, and it's a bit heavy.

That's why your hands are shaking.

Finally, Chen Zhou turned to the latest page of the problem set.

Chen Zhou could clearly hear his heartbeat, the sound was very loud, and his heartbeat was fast.

He was nervous and excited.

This is different from the previous multiple verifications.

In the past, he was all about trial and error.

Because there is a set of mistakes, the cost of trial and error is very low.

Moreover, he himself is not sure.

But this time was different.

He was sure.

Taking a deep breath, Chen Zhou slowly focused his gaze on the latest page of the problem set.

Seeing the above content, Chen Zhou was slightly stunned.

This......

Chen Zhou only felt that his heartbeat was half a beat slower.

But when he saw the contents, the whole person fell into ecstasy.