Fields Medal winner Cedric Villani explains the many mysteries of Pi • RFI English
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- เผยแพร่เมื่อ 18 มี.ค. 2024
- 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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It's also remarkable that the video length = 2pi
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.
OMG! that's too funny!
@@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.
😂😂😂😂😂😂
You can tell that he really loves his work.
Yes clear as day.
Cedric is always worth hearing. Remarkable man 👍
I could listen to this Professor speak about maths all day long. Very charismatic,
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 !
He writes on board elegantly
Probably has hagoromo chalk
Didn't get that far. Hand gestures already too annoying.
I thought the same
mathematicians are naturally drawn to such elegance.
that circle he draws -- counter clockwise -- at 1:15 is exquisite ... and extra style points for that large, rich blue "tie" he's wearing
The length of the video is 2π
Amazing 😂
Please explain
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!
@@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!
Wow
I'm a simple learner ... I see prof. Villani, i watch the video 'til the end
Absolutely
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.
Prof. Villani's Explanation of pi is the best one I have encountered even for a non-math expert like me. Thank you Professor.
How can you not love this guy.
I dont
dresses like a low self awareness dork
@@jcjc5702 😆😆😆
@@jcjc5702then you don’t like him. Smart for sure..
@@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.
@@jcjc5702you comment like a low emotional intelligence dork
Excellent ! Congratulations for the Fields medal.
Love this guy. So brilliant yet relatable.
Perfect! Video is 6:28 long!
Yep, fully circled!
First thing I’ve noticed, even though for some reason it reads 6:29 here.
humble guy
Love this explanation of Pi. Professor Cedric Villani is my favorite mathematician.
Fiers d’avoir Cédric Villani en France ! Quel mathématicien d’exception !
Why does everyone forget that Euler’s identity also uses the four basic operators: addition, multiplication, exponentiation, and equality?
This video is about pi, not about Eulers identity.
Who forgot? It's not about operators.
Thank you for that !.. We love you guys !
Thank you Prof. Villani
He talks with such passion, I love him ❤❤❤
I am sure people got lost the first second he tried to explain 2*pi*r but his r looks exactly like a pi
What a delightful class about pi!
Very clearly explained and with a lot of enthusiasm.
well that certainly put a smile on my face
thanks for the video
Fascinating! What an answer to a simple question. Thank you.
this guy is fantastic
I love his enthusiasm and would love to take a course (any mathematics course) from him!
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. 👍
I love this guy.
Excellent.
The integral of the Cauchy Distribution f(x) = 1/(1 + x^2) also evaluates to pi, when integrated from minus infinity to plus infinity.
😮
Excellent video.
Love you man❤
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.
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 👍
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.
Mathematicians have as many reasons for doing their subject as any other subject, including money.
this dude is my inspiration
He is good I wud like to listen to him next time 😊
Thanks
Very cool style.
Every scientist should be this charismatic
So interesting.
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.
this how genius looks like :)
Great guy
He loves his job
3 Blue 1 Brown just did a video on why Pi is in e^(-x^2).
Although rough in facial appearance, he dresses like a distinct gentleman … ❤
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
I like how the Frenchman holds the chalk like a cigarette 😆
Sehr gut
It’s all in the tie.
π also appears in the probability density function of the normal distribution.
Yeah, he showed that with the integral.
All of this using base 10
Maths with base 16 instead, where Pi is an full number are very interesting.
Never knew Jordan Schlansky was a secret mathematician
Wow - he looks just like Mr Perelman :DD
I envy all math geniuses.
wow....his love for pi is like pi it self...everblasting....
Im 51 and born on March 14th. Why have I just heard that it is PI day?
Firstly thought it’s longhair Savateev😂
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?
e^{pi*i} = -1. The number e is not raised to a real number. i = sqrt{-1} which is not a real number.
@@Andrew-kf4qp Artificial
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
I would love to take a class taught by him.
Is there world e day ? e is also very interesting number.
Obsession with prizes . This man is actually called -Fields-Medal-Winner-Cedric-Villani.
who left mini macron's government in the nick of time.
Thank you for this video.
When you're talking about PI, please do not write 'r' like 77 (like pi)
Please.
This video made me eat humble pi.
Pi is also very delicious.
From the explanation and all the examples, I got the feeling that pi has a characteristic of something "full circle" with "infinity inside it".
He should use another font for his "r".
"mysteryes fo Pi" my god...
pi number is magic number.
Ramanujan had a formuls giving the particular decimal place value of pi
He speaks with a lot of enthusiasm, but in truth the material he covers here is just standard stuff that is covered in countless TH-cam videos and in standard math classes at, say, introductory college level.
It’s a news segment
Of course, but this video is for general public.
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
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.
Is this the new math?
No, its basic math.
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
i thought he was Jordan Schlansky😂
The nature of π is TOPOLOGICAL.
his face is also similar to Pi
Misleading title: there are no mysteries about pi. All these formulas can be shown to be related so a circle.
The vampire mathematician.
He should have talked for longer.
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.
Hi
لحد نصد الفديو كنت فاهم وراهة تاهة الامور مني 😐
It is interesting that you either love math or you hate it. There is no middle ground.
1:14
Mathematicians > If this a circle
Physicians >its a ring 👽👽
At thé beg we laughed lot aboutthe fameuse Pi:3,14 from where?
Even if Givenchy premium
Esse assunto, é a tarefa de casa que o professor de Leibniz lhe deu 1no infinito = 2
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.
Pi is a signature of Allah creator of the seen and the unseen
Pass😂
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.
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
@@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.
Everyone knows such basic information
The Lady Gaga of mathematics.
This guy once stole Woody's girlfriend.
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
He only won because he’s cute.
PSALM 19.
1 The heavens are telling of the glory of God;
And their expanse is declaring the work of His hands.
2 Day to day pours forth speech,
And night to night reveals knowledge.
3 There is no speech, nor are there words;
Their voice is not heard................... F=MA, E=mc^2 , ( e)^ i*pi +1= 0 , .....
🤣🤣🤣🤣🤣
Should have asked reporter what he understood
Why is he dressed like Issac Newton?