I really don't want to lie down and win

"A lot... Anyway, there are all sorts of messes." Yang Xiaoman glanced at Xu Mang, and asked curiously, "Should I fight back? Find out who is behind it, and dare to do anything to my old lady. Are you tired?"

Xu Mang: °ー°〃

I go!

Who dares to mess with you in Shanghai?

It may be a routine inspection, after all, fire prevention and anti-theft measures must be done.

"Don't think about it." Xu Mang said helplessly: "June is coming soon, and people have to write a half-year report. If they don't check and check, who will be responsible if something happens? You don't care, but others are different ah."

"bother!"

Yang Xiaoman pouted, and said silently: "By the way, what have you been doing lately? You don't go to work, you sleep until noon and you don't get up."

"Check the list."

"Look at the names of those who are going to be audited." Xu Mang said, "It's a little bit of pressure... There are many second-generation, celebrities, and rich people among them."

Yang Xiaoman said disdainfully: "Cut... I'm covering you, old lady! What second generation, what celebrity, what rich man, dare to talk irresponsibly... I will teach him how to behave on the spot, Xiao Mangmang, don't panic... If there is a problem, no need to explain, just kill them directly!"

Xu Mang was speechless for a while. This woman was getting more and more violent, but she was also protecting her weaknesses more and more, but this little Mang Mang really... really couldn't listen.

"Hey hey!"

"Can you ban this little Mangmang?" Xu Mang said angrily, "It's too nasty, too stupid!"

"do not want!"

Yang Xiaoman rolled his eyes wide, and said with a smile: "Then I'll call you... How about Xiao Xuxu? Anyway, you choose, Xiao Xuxu or Xiao Mangmang, whichever you think sounds better, I'll call you whichever one, anyway, no Calling is impossible."

I...

This...

It doesn't sound good!

After much deliberation, Xu Mang finally decided on the little Mangmang in the back.

Dinner was a simple three dishes and one soup. Xu Mang didn't cook much, which was just enough for two people. Xiaoman was losing weight recently, and she didn't know what was wrong with her muscles. She actually stood on the electronic scale and jumped out The numbers almost didn't crash.

But Xu Mang felt that Xiaoman made a big fuss a little bit, so he gained three catties...Is it necessary to make such a fuss?I lost ten catties before, although I lost it back.

Ugh...

I'm going to be vegetarian for a while.

night,

come again,

Xu Mang had just finished taking a shower, got under the covers, stood up and took a tablet from his side, and started browsing the latest news and events.

"Ugh?"

"How to solve this problem?" Yang Xiaoman took his mobile phone and approached Xu Mang, and asked curiously, "I found this on Weibo. The blogger said that the above problem has troubled mathematicians for more than 100 years." , by the way, can you solve it?"

"what?"

"What's the question?" Xu Mang asked absently.

"It's a patch issue."

"There is a hole in the pants, but the shape of the hole is very strange, but the distance between any two points is no more than one centimeter. Is a circular patch with a diameter of one centimeter really enough?" Yang Xiaoman said: "I count After a while...if the hole is an equilateral triangle with a side length of one centimeter, it is basically not enough."

"Oh..."

"This problem is called the universal coverage problem in mathematics." Xu Mang said calmly: "There are many ways to say it, but the width of the core is one, that is, there is a figure on the plane, and the distance between any two points in the figure The distance is no more than one."

"It is required to find a graphic with the smallest area so that it can cover all graphics with a width of one," Xu Mang said.

"what?"

"exactly!"

"This blogger mentioned universal coverage, and he said that no one can solve it." Yang Xiaoman said angrily: "I was so angry at that time, my mother, you didn't even try to solve it, so he dared to declare that no one could solve it. What do you mean? Look down on you!"

Xu Mang said indifferently: "Using the properties of curves of equal width, the simplest one is a regular hexagon with the distance between opposite sides equal to one, which can achieve universal coverage."

Yang Xiaoman was stunned for a moment, trying to draw a few shapes, but the regular hexagon provided by her husband with the opposite sides at a distance of [-], just covered all the shapes with a width of [-], without missing a single one.

"but..."

"Husband...can you make it smaller?" Yang Xiaoman pouted and asked, "I calculated this figure, and it seems to be [-]."

"This blogger said... the current smallest universal coverage area is 0.8441153..." Yang Xiaoman said, "Can there be something smaller than this? By the way, this blogger seems to be a doctor of mathematics. , look, look...he replied to other people's words, how irritating it is to see!"

Xu Mang nodded, and said expressionlessly, "Yes!"

"Reply to him below, and give me three days to reduce the area to a smaller value than the original value!"

......

8二十章 老公，你在逃避什么？（3/3，月票加更49/85）

Not to mention,

As a stubborn person, Xu Mang left the gentle bed and came to his study to explain the problem of universal coverage. He didn't believe that the so-called 0.8441153 was the smallest value, and there must be something smaller than this.

According to the theoretical proof 15 years ago, the coverage area of ​​Universal cannot be less than [-] square units, which means that there is not much area left for itself.

to this point,

It is no longer the so-called calculation that can be solved. This problem has passed more than 100 million, from the original 0.866 to the current 0.8441153, and has been revised countless times.

of course,

The computer at home couldn't do it. Although Xu Mang was sitting in front of the computer at this time, he was in a daze.

no way...

Yang Xiaoman, the witch, is about to make trouble again. When I think of my haggard waist, I can't do it!Don't look at Xiaoman who is less than 1.5 meters, but her small body has great strength, and she looks pure and pleasant, but when it comes... I can't bear it anyway.

At this time,

The phone rang, Xu Mang glanced at the caller, it was Yang Xiaoman calling.

"Hey?"