Reborn Tech Scholar

Chapter 191 The Field of Algebraic Geometry
Chapter 192 The Field of Algebraic Geometry

2012 1 Month 17 Day.

Basically, private companies have started their holidays. The Spring Festival travel season is the busiest time. At this time of the year, the crowds at the railway station and the endless queues are a unique portrayal of the Spring Festival travel season. According to the forecast of the transportation department, this year’s During the Spring Festival travel season, passenger traffic will reach a staggering 31.58 billion.

And on this day, the National Bureau of Statistics released data: At the end of 2011, the urban population of mainland China was 69079 million, and the rural population was 65656 million. The urban population accounted for 51.27 of the total population, surpassing the rural population for the first time.

This data also shows that China's reform and opening up in the past 30 years has achieved remarkable results. After all, urbanization is an important indicator of modern society.

At the same time, the National Bureau of Statistics also released a 2011 GDP statistics. After preliminary statistics, the GDP was 47.31 trillion yuan, an increase of 9.3% over the previous year at constant prices. The annual average exchange rate of RMB to US dollar was 6.4588 According to calculations, the total GDP of China in 2011 was about 7.325 trillion US dollars, surpassing the second place, Japan, by 1.5 trillion US dollars, and it is already throwing away Japan. As for Germany, which once made China look up to, its GDP is only half of China.

When Huaxia announced the latest GDP, the theory that GDP is useless began to wave after wave. According to Zhuanjia, the concept of total GDP is wrong and meaningless. The concept of per capita GDP should be used. China's GDP is far inferior to that of Germany. , Dongying.

Anyway, it just means denying the achievements of China's social and economic development.

I don't know how many of these brick-and-mortars have collected money in private, and their hearts have turned black.It was they who advocated the total GDP at the beginning, and they are also the ones who advocate the uselessness of the total GDP now.It doesn't matter if you slap yourself in the face, it's calm and just.

Qin Yuanqing has always been optimistic about the development of the motherland, and Qin Yuanqing is also proud of the achievements of the motherland.

However, at this time Qin Yuanqing is focusing on the BAB conjecture. The full name of the BAB conjecture is the Borisov-Alexeev-Borisov conjecture. It was independently proposed by the Borisov brothers and Alexeev in the 90s of the last century.

The specific content is that under reasonable assumptions, Fano varieties form a bounded family, and under any definite dimension, Fano varieties with slight singularities can be marked with a finite number of parameters.

Although the BAB conjecture is young, only in his 20s, its difficulty and research significance are extremely high.

Therefore, the BAB conjecture is listed as one of the most difficult conjectures in the field of algebraic geometry.

You know, the field of algebraic geometry has gathered a huge number of mathematical geniuses from all over the world.

But so far there has been no news that the BAB conjecture has been overcome, so we know how difficult this conjecture is.

Although the BAB conjecture has not reached the difficulty level of the seven conjectures of the millennium, it is not too far behind.

Qin Yuanqing also saw someone discussing the BAB conjecture on the forum, which aroused his interest, so he thought about trying to overcome it.

Qin Yuanqing has always been labeled as an expert in number theory, and there is no mathematician in the world who surpasses him in number theory.This makes people overlook that Qin Yuanqing is not only good at the field of number theory, he is also good at other fields of mathematics.

Therefore, thinking that there will be nothing wrong with half a month of the Spring Festival, Qin Yuanqing decided to choose the BAB conjecture as his research topic.

Of course, it is different from other people who determine the research topic and then submit a report to apply for scientific research funding. Qin Yuanqing did not apply for funding, because Qin Yuanqing still doesn't care about the hundreds of thousands or millions of dollars.

"To solve the BAB conjecture, we must solve the minimal model program. This minimal model program is a key to unlock the BAB conjecture." Qin Yuanqing soon discovered that the best way to solve the BAB conjecture is to solve the minimal model program .

The so-called minimal model program is a problem of double rational geometry in algebraic geometry.

For a given algebraic variety, we must be able to generalize blow down operation or flip operation. After a finite number of operations, we can get a geometrically minimal model, which is the minimal model program.

The minimal model program is very unpopular, but it does not mean that its academic value is not high.On the contrary, the concept of minimal model program is of great help to the research on the classification and structure of high-dimensional algebraic varieties.

But mathematicians are currently unable to directly apply the minimal model program to the study of algebraic varieties.

The reason is very simple. In the minimal model program, there are two major problems, namely, the first problem of the minimal model program and the second problem of the minimal model program.

These are the two mountains that stand in front of all the mathematicians who study the minimal model program. They imprison the minimal model program like shackles, and then put it on the shelf.

To understand it simply, if you want to apply the minimal model program to the study of high-dimensional algebraic varieties, you must solve two major problems in the minimal model program.

A few years ago, many mathematicians tried hard, but all ended in failure.

As time goes by, there are fewer and fewer challengers, and this research direction becomes more and more unpopular.

The doctoral thesis he wrote for his doctoral students in algebraic geometry was to prove the Cohen-Lenstra conjecture in the field of algebraic geometry.

And this minimal model program problem is much more difficult than the Cohen-Lenstra conjecture.

"Interesting!" Qin Yuanqing used a little effort to solve the first problem of the minimal model program with two pieces of paper. This proof is more meaningful because it introduces the concept of drawing to K clusters.

The abstraction to K clusters can not only simplify some geometric descriptions, but also the definition of divisors on K clusters is just the definition of D divisors.

In this case, it is very simple to perform contraction mapping on an algebraic variety that is not extremely small, and shrink some subclusters on it into subclusters with lower dimensions!
On the plane to Hengdian, Qin Yuanqing wrote the paper "A Solution to the First Problem of the Minimalist Model Program". As before, it is still divided into Chinese and English versions.

For Qin Yuanqing, it was too simple to organize a 2-page paper, so when the plane just reminded that the plane was about to arrive at Hengdian Airport, Qin Yuanqing had already finished editing two papers.

Then Qin Yuanqing got off the plane, and his salute was very simple, just a suitcase and a laptop bag.

Qin Yuanqing did not send the paper "Solutions to the First Problem of the Minimalist Model Program" to the journals. After all, with the weight of the first problem of the Minimalist Model Program, it is still difficult to get into the four major journals, and can only enter the second echelon a district periodical,
But when he solves the second problem of the minimal model program, and proves the BAB conjecture, and forms a complete set of argumentation system, it will be different. At that time, the four major journals are even willing to give Qin Yuanqing's paper a special issue. .

After all, the status of the BAB conjecture is not inferior to that of the twin prime number conjecture, Zhou's conjecture, and hailstone conjecture, and it is definitely a research result of the Fields Medal level.

Whoever solves the BAB conjecture can become a master in the field of algebraic geometry, and whoever is a popular candidate for the Fields Medal.

Just like when Qin Yuanqing solved Zhou's conjecture, it caused a sensation in the mathematics world, and then even Shuimu University wanted to let him graduate early. Solving such a world mathematics problem is a symbol of talent and a symbol of status.

In the field of mathematics, if you want to become a master, you either solve the world's mathematical problems, or you develop extremely valuable research.

Otherwise, it is not a big boss.

Qin Yuanqing arrived in Hengdian and found out where the crew of "Langya Bang" was located. "Langya Bang" is a major production jointly produced by Qingtian Entertainment and Tangren Film and Television. It was filmed in several locations, including Hengdian Film and Television City, Xiangshan Film and Television City, Wuxi Water Margin City, West Zhejiang Grassland, Yandang Mountain, etc. It can be said that the funds are sufficient, When the actors' remuneration accounts for a relatively small proportion, "Langya Bang" can be called luxurious.

It was also at this time that after Hu Ge had a car accident a few years ago, he was immersed in the drama, and his fame dropped greatly. Otherwise, he would have to take the majority of the salary alone.

As for the rest of the cast, the biggest name was actually Jing Tian, ​​and the others were either newcomers or not well-known, and the required salary was relatively low.

The entertainment circle is even scarier than the [-]/[-] rule. First-tier stars really dominate, second-tier stars eat soup, and third-tier stars are just like white-collar workers. Those who don’t even count as third-tier stars are even worse. You have to live together with others.

It has also come to the era of short videos, good-looking women plus beauty artifacts, even if they are not even third-tier stars, they can still rely on selling cuteness, dickhead men screaming with red eyes, making money by tipping, can also open Luxury cars live in luxury houses.

When Qin Yuanqing arrived at the crew of "Langya Bang", he saw Hu Ge dressed in ancient robes. He had to say that this Hu Ge was really a handsome guy. The charm of a mature man.

And Qin Yuanqing also discovered that the costumes and props of the crew of "Langya Bang" are much better than those in the previous life, which are simply two concepts.

But it's normal to think about it. Although Tangren Films has filmed several TV series with high ratings and is well-known in the industry, it is actually a hard work haha. Many female stars also chose to leave after stepping into the front line.

If Tang Ren's film and television were great and the resources were good, there wouldn't be so many artists who would choose to leave.

Jing Tian, ​​who is not far away, is wearing armor, beautiful and charming, but also has a heroic spirit, which makes people feel like a woman who does not give in to men.

Qin Yuanqing watched the crew filming with great interest. It was different from watching it on TV. It was very interesting to watch it live. The sound was not so pleasant, but there was no number of people.

Obviously at this time, actors still have basic ethics, like a certain female star in the previous life who directly staged a cut-out performance, and all kinds of little fresh meat said one, two, three, four in their mouths. . . . . .And the hateful thing is, those fans shouted one by one that the little brother was working hard and dedicated to acting!
(End of this chapter)