Fields Medal winner Cedric Villani explains the many mysteries of Pi • RFI English

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3 ай бұрын

March 14 is celebrated as Pi day every year. The date 3/14, corresponds to the first three digits of the famous mathematical constant. According to Fields medal winner Cédric Villani, IHES-Université de Lyon Chair in Analysis, pi is an emblematic number and a key cornerstone in many subjects of mathematics.
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Пікірлер: 176

@imaginationpictures 3 ай бұрын

It's also remarkable that the video length = 2pi

@yanfranca8382 3 ай бұрын

And 2pi (also known as tau) was almost used as the constant. It was by chance that pi = 3.14... and not 6.28... If you think about it, it would make much more sense for pi to be equal to 6.28. In this scenario, C = R*pi', and not C = R*2*pi. It would be more elegant.

@PresCalvinCoolidge 3 ай бұрын

OMG! that's too funny!

@tinu5779 3 ай бұрын

@@yanfranca8382 On the other hand when using the diameter instead of the radius the circumference is just d*pi. That is good for practical work since measuring the diameter is easier than measuring the radius.

@pablohuerta8771 3 ай бұрын

😂😂😂😂😂😂

@ronnie9187 3 ай бұрын

@scozember 3 ай бұрын

You can tell that he really loves his work.

@user-qz1sj1ru3d 3 ай бұрын

Yes clear as day.

@hankseda 3 ай бұрын

Cedric is always worth hearing. Remarkable man 👍

@stephenconnor6309 3 ай бұрын

I could listen to this Professor speak about maths all day long. Very charismatic,

@elias_abs Ай бұрын

He’s the proud of our country in France, he’s very famous for having won the title of “Médaillé Field » in 2010 which is incredible, he studied maths in the best schools of France and got many diplomas, I would so much like to meet him !

@Lambda69 3 ай бұрын

He writes on board elegantly

@Beefmongering 3 ай бұрын

Probably has hagoromo chalk

@gwh0 3 ай бұрын

Didn't get that far. Hand gestures already too annoying.

@nathansudermann-merx4586 3 ай бұрын

I thought the same

@caduaraujo331 3 ай бұрын

mathematicians are naturally drawn to such elegance.

@doctorpatient519 2 ай бұрын

that circle he draws -- counter clockwise -- at 1:15 is exquisite ... and extra style points for that large, rich blue "tie" he's wearing

@ambar1947 3 ай бұрын

I'm a simple learner ... I see prof. Villani, i watch the video 'til the end

@charlesbaoumar6087 3 ай бұрын

Absolutely

@sleepycritical6950 3 ай бұрын

Isn’t he the dude that got the medal for a result on the fluid equation? I read his book on it and it was a very interesting read.

@GILBERTPASIONA 3 ай бұрын

Prof. Villani's Explanation of pi is the best one I have encountered even for a non-math expert like me. Thank you Professor.

@Kaleckian 3 ай бұрын

How can you not love this guy.

@jcjc5702 3 ай бұрын

I dont dresses like a low self awareness dork

@arileo6304 3 ай бұрын

@@jcjc5702 😆😆😆

@michela5517 3 ай бұрын

@@jcjc5702then you don’t like him. Smart for sure..

@john-bloss 3 ай бұрын

@@jcjc5702He’s a dork who has won the Field Medal. I think that gives him the right to dress any way he wants. Besides his enthusiasm for talking about mathematics is terrific.

@scrumptious9673 2 ай бұрын

@@jcjc5702you comment like a low emotional intelligence dork

@superbatman3762 3 ай бұрын

The length of the video is 2π

@rubensilvera1164 3 ай бұрын

Amazing 😂

@sobhysoliman6124 3 ай бұрын

Please explain

@g57r42 3 ай бұрын

Actually not, despite the fact that 2π equals 6.28 the whereas the video is 6:29. Hence, it can not be approximated to 6.29. However, the length of the video is 6:29 and not 6.29, as it is shows a relative notation of time but with 2 different unit of measurement, have a nice day!

@Luffy31236 3 ай бұрын

@@g57r42Actually, you may have been misinformed. The actual length of the video is 6.28, which is a multiple of π's approximation. Have a great week!

@AnantKumar-on1rw 3 ай бұрын

Wow

@electrum310 3 ай бұрын

Excellent ! Congratulations for the Fields medal.

@jlunde35 3 ай бұрын

Love this guy. So brilliant yet relatable.

@corkkyle 3 ай бұрын

Perfect! Video is 6:28 long!

@reqontra 3 ай бұрын

Yep, fully circled!

@WasickiG 3 ай бұрын

First thing I’ve noticed, even though for some reason it reads 6:29 here.

@margerdei 3 ай бұрын

Love this explanation of Pi. Professor Cedric Villani is my favorite mathematician.

@tuhinmajumder6680 3 ай бұрын

Thank you Prof. Villani

@countryside6550 3 ай бұрын

humble guy

@paulg444 3 ай бұрын

Thank you for that !.. We love you guys !

@josemanuelramirezleon7663 3 ай бұрын

He talks with such passion, I love him ❤❤❤

@yanfranca8382 3 ай бұрын

What a delightful class about pi!

@elias_abs Ай бұрын

Fiers d’avoir Cédric Villani en France ! Quel mathématicien d’exception !

@ukdavepianoman 3 ай бұрын

Very clearly explained and with a lot of enthusiasm.

@robinhillyard6187 3 ай бұрын

Why does everyone forget that Euler’s identity also uses the four basic operators: addition, multiplication, exponentiation, and equality?

@JobBouwman 3 ай бұрын

This video is about pi, not about Eulers identity.

@pigeonlove 2 ай бұрын

Who forgot? It's not about operators.

@jimbojet8728 3 ай бұрын

Fascinating! What an answer to a simple question. Thank you.

@edadan 3 ай бұрын

I love his enthusiasm and would love to take a course (any mathematics course) from him!

@bluesy666 3 ай бұрын

this guy is fantastic

@maheshbhatt1255 3 ай бұрын

Excellent.

@hrperformance 3 ай бұрын

well that certainly put a smile on my face thanks for the video

@benediktmaier6388 3 ай бұрын

I am sure people got lost the first second he tried to explain 2*pi*r but his r looks exactly like a pi

@santhoshkumarp2361 3 ай бұрын

Love you man❤

@Thoth608 3 ай бұрын

this dude is my inspiration

@FisicoNuclearCuantico Ай бұрын

I love this guy.

@terencemeikle534 3 ай бұрын

To anyone out there who doesn't already own a copy, I would recommend Cedric's book, "Birth of a Theorem." One of the most exciting and inspiring mathematical reads I've come across. (And he looks particularly dashing on the cover, too!) Quite a guy. 👍

@vinaykumarsingh5360 3 ай бұрын

He is good I wud like to listen to him next time 😊

@johnaugsburger6192 3 ай бұрын

Thanks

@JobBouwman 3 ай бұрын

The integral of the Cauchy Distribution f(x) = 1/(1 + x^2) also evaluates to pi, when integrated from minus infinity to plus infinity.

@scrumptious9673 2 ай бұрын

😮

@technology28 3 ай бұрын

Excellent video.

@tadessebekeshie7231 3 ай бұрын

Pi is irrational, transcendental, universal, emblematic constant and the equation that relates the constants 0,1,pi,e and i is really fascinating as it relates constants with different historical background. Mathematicians do mathematics primarily for its beauty and not for the applications their works may have, as do painters, musicians and other artists.

@pigeonlove 2 ай бұрын

Mathematicians have as many reasons for doing their subject as any other subject, including money.

@nagaraju332 Ай бұрын

Excellent, I appreciate His initiative feeling regarding that Five appearing in that. There is some limitations to explain this through Language even though the Professor trieying for some thing to understand that 👍

@johnconn982 3 ай бұрын

Amazing to listen to,however I didn’t understand a word he said never mind getting the concept. But still fascinating to listen to these ideas.

@user-tn9ij4ub5i 3 ай бұрын

Great guy

@walkerrowe9534 3 ай бұрын

So interesting.

@Andrew-kf4qp 2 ай бұрын

Very cool style.

@andrejsmiezers3865 3 ай бұрын

this how genius looks like :)

@Cant_find_good_Handle 2 ай бұрын

The key thing I learned from this video is that I could have just been using 22/7 all these years. It's close. Pi is 99.95% of 22/7.

@blitziam2105 2 ай бұрын

He loves his job

@denismijatovic1239 3 ай бұрын

Every scientist should be this charismatic

@HarshColby 3 ай бұрын

3 Blue 1 Brown just did a video on why Pi is in e^(-x^2).

@eliteintelectual.9948 3 ай бұрын

I like the way of writing 1 of Europeans that is the real 1 , not like Americans that write it like a letter l, it doesn't make sense really

@electrum310 3 ай бұрын

π also appears in the probability density function of the normal distribution.

@robinhillyard6187 3 ай бұрын

Yeah, he showed that with the integral.

@manfredbogner9799 3 ай бұрын

Sehr gut

@theMuritz 3 ай бұрын

Although rough in facial appearance, he dresses like a distinct gentleman … ❤

@paulwilson3324 2 ай бұрын

I like how the Frenchman holds the chalk like a cigarette 😆

@sinichitaniyama 18 күн бұрын

1:16 Quelle est la différence entre un cercle et un cercle parfait ?

@fabios.253 3 ай бұрын

All of this using base 10 Maths with base 16 instead, where Pi is an full number are very interesting.

@thegreatreverendx 3 ай бұрын

It’s all in the tie.

@delq 3 ай бұрын

Never knew Jordan Schlansky was a secret mathematician

@danielbrstak5730 3 ай бұрын

I envy all math geniuses.

@CosmopolitanXMan 3 ай бұрын

From the explanation and all the examples, I got the feeling that pi has a characteristic of something "full circle" with "infinity inside it".

@dmitrys2854 3 ай бұрын

Firstly thought it’s longhair Savateev😂

@James-bv4nu 3 ай бұрын

Thank you for this video. When you're talking about PI, please do not write 'r' like 77 (like pi) Please.

@hugowilliams1988 3 ай бұрын

Is there world e day ? e is also very interesting number.

@EricPham-gr8pg 3 ай бұрын

Pi is not constant because if you measure various pipes use around the home then it prove that pipe is not constant but change with size of radius

@barashah1171 3 ай бұрын

wow....his love for pi is like pi it self...everblasting....

@TymexComputing Ай бұрын

Wow - he looks just like Mr Perelman :DD

@sonarbangla8711 3 ай бұрын

Ramanujan had a formuls giving the particular decimal place value of pi

@leeoswald9799 3 ай бұрын

I would love to take a class taught by him.

@briankelly5828 3 ай бұрын

This video made me eat humble pi.

@rickrick5041 2 ай бұрын

it's not possible for 2.7 raised to any power to be less than 0 so how can e raised to ipie be -1?

@Andrew-kf4qp 2 ай бұрын

e^{pi*i} = -1. The number e is not raised to a real number. i = sqrt{-1} which is not a real number.

@rickrick5041 2 ай бұрын

@@Andrew-kf4qp Artificial

@TheBozmeister 2 ай бұрын

Im 51 and born on March 14th. Why have I just heard that it is PI day?

@timofeysobolev7498 19 күн бұрын

length is 2pi)

@sobhysoliman6124 3 ай бұрын

PI is an old Egyptian invention. If you divide the circumference of the base of the pyramid by its height the result is 2 pi

@komasaeufer 3 ай бұрын

Pi is also very delicious.

@user-vo6oq1bv8x 3 ай бұрын

The nature of π is TOPOLOGICAL.

@colinmilton8823 3 ай бұрын

I don’t think it’s possible to prove that a perfect circle, a perfect sphere exists where the radius must therefore be of equal length at every point. There must be some degree of imperfections within everything. Infinity is the reason why.

@RodolfoMtzZ 3 ай бұрын

pi number is magic number.

@countryside6550 3 ай бұрын

his face is also similar to Pi

@ghevargheese 3 ай бұрын

"mysteryes fo Pi" my god...

@pasavant 3 ай бұрын

Is this the new math?

@lordhenry2965 3 ай бұрын

No, its basic math.

@JobBouwman 3 ай бұрын

Misleading title: there are no mysteries about pi. All these formulas can be shown to be related so a circle.

@r0xkr 3 ай бұрын

@wissamahmed6713 3 ай бұрын

لحد نصد الفديو كنت فاهم وراهة تاهة الامور مني 😐

@markgraham2312 3 ай бұрын

He should have talked for longer.

@atabac Ай бұрын

i thought he was Jordan Schlansky😂

@dr.merlot1532 3 ай бұрын

The vampire mathematician.

@barryzeeberg3672 3 ай бұрын

He speaks with a lot of enthusiasm, but in truth the material he covers here is just standard stuff that is covered in countless KZfaq videos and in standard math classes at, say, introductory college level.

@maximlamoureux4129 3 ай бұрын

It’s a news segment

@lordhenry2965 3 ай бұрын

Of course, but this video is for general public.

@NorthCalm 3 ай бұрын

Yea because he is not giving a lecture here. The interviewer probably already told him that this will only be a short interview and he provided good information for the average guy who is not much aware of pi

@JobBouwman 3 ай бұрын

A genius should also be able to explain the basics, without diverging into complex but obscure details to show off how smart he really is.

@Benhachem-zi3dq 3 ай бұрын

At thé beg we laughed lot aboutthe fameuse Pi:3,14 from where? Even if Givenchy premium

@claudiopinheiroprestes4203 3 ай бұрын

Esse assunto, é a tarefa de casa que o professor de Leibniz lhe deu 1no infinito = 2

@amaysharma1909 3 ай бұрын

1:14 Mathematicians > If this a circle Physicians >its a ring 👽👽

@chizirada865 2 ай бұрын

Prof you are wrong. Zero, 0 is not a number for nothing or denoting nothing. 0 is also a tangible quantity eg. 10, 10001 etc.

@islamaroc 3 ай бұрын

Pi is a signature of Allah creator of the seen and the unseen

@michaelwtreww 3 ай бұрын

To be honest,opposed to above complementary comments,I don’t think it is a so good introduction to the roles and mysteries about pi in maths,such as how the ancient guys deduced the formula for the circumstantial length of a circle containing pi etc.Welcome to debate.

@Martykun36 3 ай бұрын

he gave a pretty decent overview of the places pi appeared throughout the history of mathematics, what you say happened only in the beggining of it

@michaelwtreww 3 ай бұрын

@@Martykun36 Thanks for weighing in.Of course I know what Field medalist means for mathematics,but what my point is that I do not think he profoundly unravelled why pi was such weirdly and mysteriously ubiquitous in many of famous formulas ,which is what I am curious about,His explainations ,at least in my opinion,was just to present some well-known facts but not why,Welcome more discussions about this fascinating topic.By the way,I am a surgeon who have great interest in Math.

@NorthCalm 3 ай бұрын

Everyone knows such basic information

@user-tp1kd9xy1b 3 ай бұрын

I have an Idea about this nember..si i think there IS one direction un Coran for Muslims..that god Saïd...thé two sea meet eatchother but non mix

@A.R.-mk1lq 3 ай бұрын

He should use another font for his "r".

@yomtoango6021 3 ай бұрын

Should have asked reporter what he understood

@babbarr77 3 ай бұрын

He only won because he’s cute.

@DrTWG 3 ай бұрын

Obsession with prizes . This man is actually called -Fields-Medal-Winner-Cedric-Villani.

@carlosgaspar8447 3 ай бұрын

who left mini macron's government in the nick of time.

@boywonder6659 3 ай бұрын

For me, it proves Jesus exists.

@user-cv9cd4sq2n 3 ай бұрын

How is this?

@boywonder6659 3 ай бұрын

@@user-cv9cd4sq2n All this maths stuff and how it all fits together can’t possibly be just chance, to think so is absurd. Do you not think so?

@user-cv9cd4sq2n 3 ай бұрын

@@boywonder6659 oh it is all math….just not the math this guy is talking about…he is just making videos of anomalies that a hundred other men in history have all ready discovered… the real math is not going to be on KZfaq my friend