Chapter 818 Perelman’s Visit
This is a win-win situation, not to mention that the power of decision still lies with him, so Chang Haonan naturally has no reason to disagree.
But there is still 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 wait for the satellite to go up to the sky before starting research."
Meng Zhenyuan quickly waved his hand, indicating that he does not need to wait for a long time:
“According to the earliest plan, the Ziyu-2 01 star should be launched no later than the end of this year, and the 02 star should be launched no later than the end of 2002.”
“But at the end of last year, the country The space agency temporarily adjusted its plan and scheduled the launch of the two satellites in February and April this year respectively. At that time, they will join the already launched Ziyuan-101 satellite to form a remote sensing satellite system with a revisit cycle of approximately 20 hours. ”
“However, specific to 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 It’s 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.
Before sharpening your sword and chopping firewood, you have to celebrate the New Year anyway, so you won’t lose much time until March.
However, the other party’s answer still puzzled him:
"It's so far in advance... If the launch is carried out according to the original plan, will the satellite, especially the 02 satellite, have to wait on the ground for more than a year?"
"Uh..."
Listen When Chang Haonan asked, Meng Zhenyuan rubbed his nose:
"Mr. Chang, you may not know this. On the one hand, due to the frequency of rocket launches, satellites have to wait several months after completing factory testing. Even longer is not a particularly rare thing. On the other hand, the two Ziyuan-2 satellites did come off the production line much earlier than originally planned by using some imported parts.”
“It turns out. 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 knew it before The West-East Gas Transmission Project is part of China's systemic energy security strategy, but the modification of the space launch plan specifically for this purpose is indeed unexpected.
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 geographic information systems ( GIS) data. ”
“If we rent remote sensing satellites from foreign countries, not only will their prices be higher, we will also need to provide them with on-site measurement data for verification and comparison, and even ask them to grant them geographical 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?"< br>
“In comparison, just using some imported parts on the satellite is not a big deal.”
At this time, Meng Zhenyuan, who was next to him, also interjected:
"Actually, the key is that in the past one or two years, 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 are willing to pay this money, we may not be able to spend it. ”
This is more realistic.
Take France, which sells the hyperspectral detection equipment, as an example. 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 use the excuse of "affecting national security" In the name of export restrictions.
But now...
That’s ridiculous, you’ve already taken over the power of your next-generation main fighter and started joint development with us, so why are you pretending to be a big-tailed wolf?
So, if someone says that you have affected 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.
Witnessed by Tang Lintian, the two research groups simply signed a cooperation agreement, expressing their willingness to share some of the data generated during the research process, and that was it.
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 completed, Perelman's visit is indeed more important in comparison.
On the one hand, even before he solved the Poincaré conjecture, he was already considered a great figure in the field of differential geometry.
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 is very important for all types of scientific research work. will be of huge help.
Now that his theoretical level has reached LV3, it is very difficult to improve his level by completing ordinary small projects.
Face-to-face communication with a top mathematician is likely to get twice the result with half the effort.
In view of this, Chang Haonan simply went to the airport in person and picked up the visiting team from the Steklov Institute of Mathematics.
To be honest, if Chang Haonan hadn't specifically asked someone to find the other party's information, it would have been difficult for him to recognize at a glance that the man in front of him, wearing a semi-old cotton coat, full of beard, and a bit bald, was a well-known mathematician. Home Grigory Perelman.
"Hello, Mr. Perelman." Chang Haonan stepped forward and shook hands with the other party.
Perelman has been studying in the United States for many years, so he can naturally understand English.
"It seems that you are Chang Haonan, Professor Chang."
The other party looked Chang Haonan up and down, and then continued:
"From November last year At the beginning of that paper, I was wondering what kind of person the author would be. When I met him today, I found that it was indeed similar to what I thought. ”
Although Perelman is indifferent to fame and fortune and has a somewhat eccentric personality, he still looks like a mad scientist.
But this does not mean that he is a withdrawn or mean person.
In fact, the indifference he usually displays is just because he rarely encounters equally matched opponents.
So, after meeting Chang Haonan, he acted more like a "normal person".
“Let’s get in the car first and talk on the road.”
Chang Haonan motioned to the other party to the minibus next to him.
Perelman nodded, but before taking a step forward, he looked at the two entourage standing next to the car door.
Judging from the way the two crossed their hands in front of them, they should be the members in charge of security.
"Actually, there is no need to have such a big battle. I am just an ordinary person who knows a little bit about mathematics..."
He followed Chang Haonan into the car and said to the former. .
But Chang Haonan's English is not good enough to understand the sentences with Slavic accent and speaking at an extremely fast speed.
So this sentence is conveyed through translation.
After listening, he could only sigh.
Today I met my opponent.
On every level.
Chang Haonan originally wanted to reply: Don't think too much, these people are protecting you just by the way, mainly to protect me.
But while he was hesitating, Perelman had already taken out a notebook from his cotton coat pocket and began to discuss with him the convergence theorem and singular model mentioned in the last email...
The three cars stopped and went all the way. Perhaps they were catching up with the rush hour, so they didn’t arrive at the arranged accommodation until near evening.
Before getting off the bus, Chang Haonan was shocked by the greeting team headed by Tang Lintian and consisting of dozens of people outside.
Not to mention Perelman next to him.
The latter can be considered a person who has seen the world, but even in places like MIT, Princeton, and Columbia, he has never encountered such a pomp.
"Chang, I believe that you Chinese must be a promising nation."
He put the notebook back into his pocket and looked at the scene outside the window.
“?”
Chang Haonan, who was already a little confused, was even more confused by this out-of-the-box sentence.
He even specifically checked the other person's expression and found that it looked sincere and did not look like he was being shady:
"What does this have to do with the hope of our nation?"
"I have never seen it before. Nowhere else would a mathematician be treated so grandly."
"..."
Chang Haonan was a little embarrassed.
It is said that after entering the customs, a great scholar would argue for me.
Why haven’t I entered the customs yet and someone has already given me some advice?
He said to himself that this was just because few big figures in the field of mathematics came to China for academic exchanges in the past, so scholars of your level are already considered extremely rare guests.
Have you not seen Tian Gang from Yan University next door? In order to invite a relatively famous mathematician to give a report on the platform, he asked his grandfather to sue his grandmother.
But this is certainly not the case in the American mathematics community where big bosses are everywhere.
The degree of emphasis is naturally different.
And if you don’t disappear after proving the Poincaré conjecture, you can probably experience more grand treatment than this anywhere in the world...
(End of this chapter )