The most important part of the solution has passed. Next, just follow the steps.

Xi Pang Xuelin wrote on the whiteboard without any ills.

Uh ...

[Analytical solution of Einstein's gravitational field equation. Through spherical symmetry and morphological classification of states, a simple relationship can be given to each integral value of parameter n to give an analytical solution of the field equation. Due to the physical dependence of the solution, both pressure and density are finite positive values, and P / ρ and dp / dρ should decrease outward along their center to their structural surface. The mean equation line elements are: ^^ 1 (k ,, 2, 3); ^ γ (r), ^ α (r), r ^ 2; r ^ 2sin ^ 2θ, (k ≠ 1) ...]

Uh ...

[, The solution constant is equal to the fourth solution of Tolman. When it is at the center of the ball, P / ρ has the maximum value. On the contrary, the value of P / ρ decreases as the value of r increases. The characteristics of the two solutions for dp / dρ are irregular and are not applicable to neutron stars. All values ​​of u and P / ρ decrease with increasing r, and the maximum ratio of center to surface density ρ0 / .5. In summary, for Einstein's gravitational field equation Ruv-1 / πG / c ^ 4 × Tuv, the analytical solution is as follows ...]

Uh ...

Solve smoothly!

Pang Xuelin dropped the marker and turned around: "This is the whole process of solving the Einstein's gravitational field equation by Ponzi geometry method. This method can be generalized to all problems of solving nonlinear partial differential equations. Of course, The emergence of analytical solutions does not mean that all nonlinear equations have accurate solutions, but there is no doubt that by solving analytical solutions of nonlinear equations, the accuracy of exact solutions of nonlinear equations can be greatly improved. "

Howl

The hall was quiet for a little while, and soon, applause rang and swept the audience.

Everyone stood up and paid tribute to the young figure on the stage.

From now on, physics, chemistry, biology, computing, engineering, mechanics, economics, and even social science ... Wherever a model needs to be established by a nonlinear partial differential equation, there will be major changes due to the appearance of Ponzi geometry. .

"After today, Professor Pang is probably the first person in the mathematics world to deserve it!"

Jagob Sticks said.

"It's almost there, I didn't expect that a young man less than 23 years old took the scepter inherited by Grothendieck!"

Schultz stood up and applauded with some emotions. For Pang Xuelin, from the beginning of trying to compare with him, to the subsequent admiration, and now, Pang Xuelin has become a towering mountain in his heart, and can only look up.

Uh ...

The other side of the auditorium.

Tan Tanhao applauded as he stood up and said, "To our scientific community in China and around the world, today is probably a historic day."

Sometimes, it may take decades or even hundreds of years for the progress of basic science to show its effect.

But sometimes, the day when this theory is born, it may have a significant impact on the entire scientific community.

There is no doubt that the Ponzi geometry theory and the solution of nonlinear partial differential equations belong to the latter.

Xu Xincheng and Liu Tingbo also stood up and looked at the figure on the stage with emotion.

Everyone understands what Tan Hao means.

Even with Pang Xuelin's academic achievements, even without any heavyweight awards, he will not affect his academic status.

The clapping of applause continued for a full five minutes before it stopped.

But everyone's eyes are still focused on Pang Xuelin.

Pang Xuelin smiled: "Thank you all, next, if you have any questions in the solution process, you can raise your hand at any time to ask questions!"

Soon, many people in the hall started raising their hands.

After all, mathematicians who can understand the whole process of Pang Xuelin's solution for the first time are still relatively limited, and there are still a lot of scientists who are still ignorant.

好 "Well, the gentleman sitting in the third row and the fourth column, do you have any questions?"

Soon, the staff at the conference site handed the microphone to the other party.

The Latino scholar, who looks more than thirty years old and wears glasses, said, "Professor Pang, I'm Garden Leslie, an associate professor of computer science at Stanford University. I would like to ask ..."

Uh ...

The next question section is not shocked.

With specific cases for reference, combined with Pang Xuelin's thesis, most of the scientists present have figured out how to solve nonlinear partial differential equations by Ponzi geometry.

Without any problems in the overall solution idea, the rest are small details.

Xi Pang Xuelin patiently answered the questions of every questioner.

The time passed minute by minute. Unconsciously, fewer and fewer people asked questions.

"Well, do you have any questions? If there is no problem, then this Ponzi Geometry Report will be carried out here. In addition, I have one more thing to tell you, starting next month, Jiang will hold Pang Symposium on Geometry. The seminar will be conducted in the form of a seminar. Participants will regularly report their research results and experience of current research papers in the international mathematics community, and will question and answer each other. The starting time is tentatively scheduled for next year. In January, lasting one year, you can join and exit at any time in the middle. Later, Jiangda will publish the registration link to participate in the seminar on the official website. We will select all of the applicants to participate in the seminar ~ www.mtlnovel .com ~ Pang Xuelin's voice dropped, and the audience immediately became uproarous.

Everyone understands what this seminar means.

With the development of Ponzi geometry, this new discipline will become a hotspot in the field of mathematics in the next few decades.

Wang Yuexin stared at Pang Xuelin on the stage without blinking, and said, "Grigory, that's great. I originally wanted to apply to Jiangda to be a visiting scholar. With this seminar, I don't have to worry so much. Now, I must attend this seminar. "

Perelman was a little surprised, and a little surprised: "Are you serious?"

Mochizuki nodded: "Yes, the prime time of my academic career was spent on Far Abel geometry. Now Professor Pang Xuelin has constructed a more grand Ponzi geometry theory on this basis. For me, this is A whole new field, I believe I can learn more with Professor Pang! "

Perelman frowned and did not answer.

The potential shown by Ponzi geometry in solving nonlinear partial differential equations made him realize that to prove the existence and smoothness of the N-S equation, he must rely on Ponzi geometry.

But he is a habitual person living out of the house, and then let him enter a research institution to study and study, he can not make that determination.

But there is no doubt that Mochizuki's remarks have caused waves in his heart.

(//)

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