Chapter 818 Perelman's Visit

This is a win-win situation, not to mention that the power of decision still belongs to him, so Chang Haonan naturally has no reason to disagree.

But there is a key question.

"Professor Meng, from what you just said, the two satellites should not have been launched yet. Is there a specific planned time?"

Chang Haonan asked:

"You know, my tasks here are also quite heavy. I can't just wait for the satellite to go up and then start doing research."

Meng Zhenyuan quickly waved his hand, indicating that he did not need to wait for a long time:

"According to the earliest plan, ZY201 should be launched no later than the end of this year, and ZY202 should be launched no later than the end of 2002."

"But at the end of last year, the National Space Administration temporarily adjusted its plan and arranged the launch of the two satellites in February and April this year respectively. At that time, together with the already-launched Ziyuan-101 satellite, they will form a revisit cycle of about 20 Hourly remote sensing satellite system.”

"However, specifically for our research, only the Ziyu-201 satellite is equipped with hyperspectral detection equipment. In addition, this satellite is not designed with a side swing function to ensure imaging accuracy, so the revisit period is still almost a month."

Chang Haonan's eyes lit up.

If the 01 satellite can be launched in February, then the first batch of remote sensing data should be released by March at the latest.

Although in geology, neither aircraft, satellites nor numerical calculations can truly replace field surveys, there is no doubt that they can greatly improve the overall surveying and mapping efficiency.

Sharpening the knife does not waste time chopping firewood. Anyway, there is still a new year in between. Waiting until March actually won’t lose much time.

However, the other party's answer still puzzled him:

"It's so far in advance... If the satellite is launched according to the original plan, will the satellite, especially the 02 satellite, have to wait on the ground for more than a year?"

"Well……"

Hearing Chang Haonan's question, Meng Zhenyuan touched his nose:

"Mr. Chang, you may not know this. On the one hand, due to the frequency of rocket launches, it is not particularly uncommon for satellites to have to wait several months or even longer after completing factory inspections. On the other hand, the two Ziyuan No. 2 The satellite was indeed rolled off the production line much earlier than originally planned by using some imported parts.”

"So that's it..."

Chang Haonan nodded:

"It seems that the country has put a lot of effort into cooperating with the market-oriented operation of the West-East Gas Pipeline..."

He had known before that the West-East Gas Transmission Project was part of China's systemic energy security strategy, but it was indeed unexpected to modify the space launch plan specifically for this purpose.

However, this was his misunderstanding.

This time it was Tang Lintian who explained:

"The early launch of these two satellites is not entirely for the West-East Gas Transmission Project. According to the national plan, there are almost six or seven strategic-level projects that will be launched or started in the next few years, each of which requires a large number of geographical information systems ( GIS) data.”

"If we rent remote sensing satellites from foreign countries, not only will the price quoted by others be higher, we will also need to provide on-site measurement data for verification and comparison, and we will even be asked to grant them geographical surveying and mapping rights!"

Speaking of excitement, Tang Lintian knocked on the table with two fingers, with a bit of anger in his tone:

"This is part of national sovereignty, how can it be opened to outsiders casually?"

"In comparison, just using some imported parts on satellites is not a big deal."

At this time, Meng Zhenyuan next to him also intervened:

"Actually, the key is that in the past year or two, due to various reasons, we have been able to buy some parts that were not available in the past. If we had left it in the past, even if we were willing to pay for it, we might not be able to spend it."

This is quite true.

Take France, which sold the hyperspectral detection equipment. Although it is already a relatively active country in Western countries in exporting technology to China, when it comes to critical moments, it will often restrict exports in the name of "affecting national security." set.

but now……

That’s ridiculous, you’ve already taken over the power of your next-generation main fighter jet and jointly developed it with us, why are you pretending to be a big-tailed wolf?

So, if someone says that you affect his national security, then you'd better really affect his national security.

…

Cooperation within the same school naturally does not need to be as serious as with outsiders.

Under the witness of Tang Lintian, the two research groups simply signed a cooperation agreement and expressed their willingness to share some of the data generated during the research process.

As for the remaining groups, the topics at hand are relatively light in magnitude, and they should just focus on the projects of Chang Haonan or Meng Zhenyuan.

After this matter came to an end, as time passed day by day, it soon came to the end of January.

Although there are other matters at hand that have not been dealt with, Perelman's visit is indeed more important in comparison.

On the one hand, this man was already considered a great figure in the field of differential geometry even before he solved the Poincaré conjecture.

On the other hand, although Chang Haonan is not ready to invest his main energy in the purely theoretical field at the moment, based on his experience over the years, the improvement of [theoretical level] experience and level in the system will be of great help to all types of scientific research work.

Now that his theoretical level has reached LV3, it is very difficult to improve his level by completing ordinary small projects.

And face-to-face communication with a top mathematician is likely to achieve twice the result with half the effort.

In view of this, Chang Haonan simply went to the airport in person to pick up the visiting team from the Stecklov Mathematical Institute.

To be honest, if Chang Haonan had not specifically asked someone to find the other party's information, he would probably find it difficult to recognize at a glance that the man in front of him, wearing a half-worn cotton coat, with a full beard and a little bald, was the famous mathematician Grigoriy Perelman.

"Hello, Mr. Perelman."

Chang Haonan stepped forward and shook hands with the other party.

Perelman had been studying in the United States for many years before, so he could naturally understand English.

"It seems that you are Chang Haonan, Professor Chang."

The other party looked Chang Haonan up and down, and then continued:

"Since I saw that paper in November last year, I have been wondering what kind of person its author would be. When we met today, I found that it was indeed similar to what I thought."

Although Perelman is indifferent to fame and fortune, has a somewhat weird personality, and looks like a crazy scientist.

But this does not mean that he is a lonely or mean person.

In fact, his usual indifference was only because he rarely met an opponent of equal strength.

So, after meeting Chang Haonan, he behaved more like a "normal person".

"Let's get in the car first and talk on the way."

Chang Haonan gestured to the other party to the minibus next to him.

Perelman nodded, but before taking a step, he looked at the two accompanying personnel standing next to the car door.

Judging from the action of the two people crossing their hands in front of them, they should be the members responsible for security.

"In fact, there is no need to make such a big scene. I am just an ordinary person who knows a little about mathematics..."

He said to Chang Haonan as he walked into the car behind him.

But Chang Haonan's English was not good enough to hear the Slavic big tongue and the fast-talking sentence clearly.

So this sentence was conveyed through the translator.

After listening, he could only sigh.

Today I met an opponent.

At all levels.

Chang Haonan wanted to answer that you should not think too much, these people protect you just by the way, mainly to protect me.

But during the time he hesitated, Perelman had already taken out a notebook from his cotton coat pocket and started to discuss with him the convergence theorem and singular model mentioned in the last email...

The three cars stopped and started along the way. Perhaps it was the peak period, so they did not arrive at the arranged accommodation until the evening.

Before getting off the car, Chang Haonan was shocked by the welcoming team headed by Tang Lintian, which had dozens of people.

Not to mention Perelman next to him.

The latter was also a person who had seen the world, but even in places like MIT, Princeton, and Columbia, he had never encountered such a pomp.

"Chang, I believe that you Chinese must be a nation with hope."

He put the notebook in his hand back into his pocket and said while looking at the scene outside the window.

"?"

Chang Haonan, who was already a little confused, was even more confused by this sentence that was nowhere to be found.

He even checked the other person's expression and found that he looked sincere, not sarcastic:

"What does this have to do with the hope of our nation?"

"I have never seen any other place treat a mathematician so solemnly."

"..."

Chang Haonan was a little nervous.

It is said that after entering the pass, there will be great scholars to debate for me.

How come someone has already debated for me before entering the pass.

He thought that this was just because few big names in the mathematics community came to China for academic exchanges in the past, so scholars of your level are already extremely rare guests.

Don't you see Tian Gang from Yanda next door, in order to invite a more famous mathematician to give a report, he almost begged for help.

But this is definitely not the case for the American mathematics community where big names are everywhere.

The degree of attention is naturally different.

And if you don't disappear after proving the Poincare conjecture, you can probably experience more solemn treatment than this anywhere in the world...