Chapter 384

Chapter 387

"you see, what I said is true?" Cheng Nuo says with a smile.

"Great." Helmwood nodded.

Hull was not surprised that it was fake, but when he recalled that Cheng Nuo finished the outsourcing project on his own in less than a week last time, the situation in front of him was not so bad.

Hull gave a wry smile. "It seems that we all underestimated you."

Cheng Nuo has long been used to this, and said with a smile, "it seems that what I hide is not deep enough? Ha ha. "

"By the way, in that case..." Hull looked at Cheng Nuo with a wisp of eagerness. "It's no longer feasible for us to exchange tasks. Well, you can't give me any advice. Function theory is not really my strong point. "

Well, Cheng Nuo didn't hesitate.

He nodded. "OK."

Hull's task is to study some properties of Lipschitz function and the transformation of Fritz John type optimality conditions, which he already knew when Professor Fresnel assigned tasks.

Cheng Nuo's level in function theory is higher than that in geometry.

So hull's thorny problems were nothing to him.

Put down the work in hand, Cheng Nuo also does not need long time to think.

A minute later, he picked up a piece of scribble paper and explained to hull, "Lipschitz function is very simple as long as you find the right direction to cut in."

"Since our subject is related to Riemannian manifolds, the first task is to connect Lipschitz functions with Riemannian manifolds, so as to facilitate subsequent research."

"My idea is, first of all, Let f (x) be a real valued function defined on Riemannian manifold m, x0 ∈ u, (U, φ) be a coordinate card containing point x0. If x, y ∈ u, and there is a constant L, there are:

F (y) - f (x) | L | φ (y) - φ (x) |

then, it is obvious that f (x) satisfies the local Lipschitz condition near x0. Now

"You see, a mapping f: m → r satisfies the local Lipschitz condition near the point x ∈ m, then the mapping f (x; o): TXM → R is finite, positive homogeneous, sub additive, and fully satisfies | f (x; V) | ≤ L | V |, f (x; V) as a function of V satisfies at TXM...."

Hull sat by Cheng Nuo's side and listened attentively to Cheng's explanation.

As time went on, his eyes became more and more bright.

A feeling of sudden enlightenment filled his whole body.

Before all the confusion, all disappeared without trace.

Listen to your words, better than ten years of reading!

If hull had been in China for some time, he would have used this idiom to express his excitement.

"Well, that's it. Later, you can go back and deduce it yourself. " Cheng Nuo raised his pen and wrote down the last line of formula on the paper.

Before the reaction, Cheng Nuo felt that he was held by a strong force, and then quickly released.

As soon as I look up, it's hull's back.

Cheng Nuo shakes his head and smiles, turns his chair and continues to work.

…………

In the afternoon, at 5:35, it was less than 30 minutes before work.

Cheng Nuo, who has been sitting in front of the computer all day, stands up and looks at the distant scenery through the window while exercising.

On the computer screen, Cheng Nuo has finished his task and put more than ten pages of formula in a document.

"I'm so tired!" Cheng Nuo stretched out a big stretch, overlooking the red water under the sunset in the distance.

MIT was built on the Bank of the Charles River, where Cheng Nuo can see a few small boats floating on the river.

When the project is over, you can go there.

With this in mind, Cheng Nuo copies the documents on the computer to the USB flash disk and walks to the front of Professor Fresnel's office.

He raised his hand and just wanted to knock on the door. His hearing was OK. Cheng Nuo heard a few laughs coming from inside.

"Ha ha ha ha ha ha ha ha ha ha, burp ~!"

After hesitating for a few seconds, Cheng Nuo still knocks on the door.

"Come in!"

Cheng Nuo pushed the door in and saw Professor Fresnel leaning on his office chair, staring at the computer screen, stroking his beard, laughing happily.

See Cheng Nuo come in, suddenly complexion, turn off the computer is playing video.

A light cough, complexion as usual, "something?"

"Oh." Cheng Nuo handed over the USB flash disk and said, "Professor Fresnel, I have finished the task you assigned me in the morning. The results and steps are in the document of this USB flash disk."

"You are very fast Professor Fresnel took the USB flash disk and said with a smile.But Cheng Nuo does not think this sentence is praise, he does not want to be a fast man!

Cheng Nuo modestly waved his hand, "OK, general."

"So..." Fresnel touched his chin, as if thinking about something, and glanced at Cheng Nuo from time to time.

Cheng Nuo's heart rose a kind of ominous premonition, tentatively opened his mouth, "Professor, if there is nothing else, then I will go out?"

"Wait a minute." Professor Fresnel called Cheng Nuo.

His eyes narrowed and he said with a smile, "your speed is unexpected. But that's OK. I'll give you another assignment for the first phase of the project. It's up to you to find the continuous mapping of two sequences! "

Cheng Nuo looks bitter, "Professor, this..."

That task, originally belongs to Professor Fresnel!

"Ah Professor Fresnel waved his hand and interrupted Cheng Nuo, "don't thank me. You are an international friend. I should do more exercise and exercise for you."

Cheng Nuo wants to cry without tears, wants to speak, but can't say anything.

Do evil!

When Fresnel finished the task early, he didn't know.

This is good, not only that he is a "fast man", but also assigned to one more task.

One more task, I don't know how much liver to explode!

Go on like this, not only the liver is not enough, even the kidney can't stand it!

If I had known this, why should I have done it in the first place!

It seems that the great cause of Shenbao should be put on the agenda earlier!

Looking at Cheng Nuo Xiaose out of the back, Fresnel smile, "boy, can do a lot of work!"

…………

When I got home, it was more than nine o'clock in the evening.

He Youjun is very leisurely, wearing a bathrobe, half leaning on the sofa, eating snacks and staring at the TV.

Cheng Nuo also quickly washed himself, threw himself on the sofa and moaned, "comfortable!"

He Youjun glanced at Cheng Nuo obliquely, "very tired?"

Cheng Nuo didn't even have the strength to nod. "After taking a big project, Professor Fresnel assigned tasks to me, and I would like to work 24 hours a day!"

"To you, what do you see, so absorbed?" Cheng Nuo asked.

"Go game." He Youjun said casually, then added, "the game of go between robots."

Cheng Nuo looks at the TV screen curiously.

It's a go game, but both players are robots.

One is a famous alpha dog in World War I, and the other is a robot called alpha zero. I don't know where it came from.

Looking at the chessboard, Cheng Nuo is somewhat surprised to find that the alpha dog, who once defeated the world's number one go player, is indeed in the state of being hanged by alpha half.

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