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Magic Hexagon - Numberphile 

Numberphile
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Dr James Grime talking Magic Hexagons (and magic squares).
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Videos by Brady Haran
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25 авг 2014

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Комментарии : 817   
@superj1e2z6
@superj1e2z6 8 лет назад
At least it is not a Parker hexagon
@taba1950
@taba1950 8 лет назад
too late?
@threepointonefour607
@threepointonefour607 8 лет назад
Too soon
@sliceofgarlicbread6868
@sliceofgarlicbread6868 8 лет назад
???
@mco-meowcatofficial8415
@mco-meowcatofficial8415 7 лет назад
haha xD
@davecrupel2817
@davecrupel2817 7 лет назад
lolololololololololololol
@SpeeDim
@SpeeDim 9 лет назад
I just love James Grime
@numberphile
@numberphile 9 лет назад
SpeeDim so do we!
@andrew_cunningham
@andrew_cunningham 9 лет назад
There's just something about him, isn't there...
@uselesssanity
@uselesssanity 9 лет назад
Andrew Cunningham perhaps its his little professor
@gavs928
@gavs928 8 лет назад
maybe it's just because he's British and I'm not, but he seems like he'd make a great doctor who
@alfredomoreno8516
@alfredomoreno8516 8 лет назад
Yes he conveys so much enthusiam
@sethgrasse9082
@sethgrasse9082 7 лет назад
That size 1 magic hexagon blew my mind
@TrimutiusToo
@TrimutiusToo 4 года назад
Yeah,not to mention the rigorous proof that it is indeed magical
@yusuf-5531
@yusuf-5531 4 года назад
He didn't mention that an n=0 hexagon also works
@TrimutiusToo
@TrimutiusToo 4 года назад
@@yusuf-5531 diagonals in n=0 hexagon aren't well defined so it is way too hard of a proof for this video
@Triantalex
@Triantalex 9 месяцев назад
??
@elwynbrooks
@elwynbrooks 9 лет назад
His enthusiasm makes me so happy :D
@user-xh3mx2vs3u
@user-xh3mx2vs3u 2 года назад
me too
@Maninawig
@Maninawig 5 лет назад
8:33 When you're a Maths teacher and your student asks you to prove why 1+1=2
@AlanKey86
@AlanKey86 9 лет назад
Does anyone have wood? I'll give you 2 wheat for 1 wood...
@CraftQueenJr
@CraftQueenJr 6 лет назад
AlanKey86 yep, do you have 1 sheep? I’ll give you two wood.
@Maninawig
@Maninawig 5 лет назад
Awkward for any guy to hear.... Odd glances everywhere
@MisterHunterWolf
@MisterHunterWolf 5 лет назад
*rolls seven*
@jacobr7729
@jacobr7729 5 лет назад
But I have all the ore....
@TrimutiusToo
@TrimutiusToo 4 года назад
I have wood for sheep
@SimaanFreeloader
@SimaanFreeloader 9 лет назад
James Grime is so great. I always know it is going to be good when it is a video with him.
@swarm9582
@swarm9582 9 лет назад
Thank you for being colorblind friendly in the animation because I had no idea what you were talking about with the shape grouping until that point.
@wolfiksk123
@wolfiksk123 9 лет назад
What does it look like. You can only see... Gray? Ha?! No? :(
@steinardarri
@steinardarri 9 лет назад
wolfiksk123 It he means that the red and blue ones look too similar
@SnakeBiteScares
@SnakeBiteScares 9 лет назад
steinardarri Not exactly, it depends on what type of colorblindness he has, I myself am colorblind and found it difficult to distinguish the blue and the pink. Colorblindness is where you find it difficult to distinguish between certain colors
@wmconorbrown
@wmconorbrown 9 лет назад
"Let's count that to make sure." Very difficult math I see it is to check the other 1 magic hexagon.
@8bit_pineapple
@8bit_pineapple 9 лет назад
James: "What I have here is..." --- Me: "A poorly designed Settlers of Catan Board?"
@tommytomthms5
@tommytomthms5 6 лет назад
YES THIS!
@greekfire995
@greekfire995 6 лет назад
THE poorly designed Settlers of Catan board.
@Triantalex
@Triantalex 9 месяцев назад
WeirdChamp
@8bit_pineapple
@8bit_pineapple 9 месяцев назад
@@TriantalexmonkaW
@ragibhasan5745
@ragibhasan5745 3 года назад
1:44 Its the cutest "why" I have ever heard!
@vsauce4678
@vsauce4678 4 года назад
This guy has so much passion for what he loves and it shows in his videos
@firstnamelastname-oy7es
@firstnamelastname-oy7es 8 лет назад
Incredible! It looks like all the other Hexagons have Hexa... _Gone_!!! I'm sorry for that.
@thisisrtsthree9992
@thisisrtsthree9992 8 лет назад
+Bungis Albondigas shame
@thepip3599
@thepip3599 8 лет назад
Sometimes I really wish there was a facepalm emoji. Just, so, so much.
@davecrupel2817
@davecrupel2817 7 лет назад
that was a parker square. You still get a cookie :3
@jacderida
@jacderida 9 лет назад
Numberphile2 would have been a nice place for the full solution :).
@numberphile
@numberphile 9 лет назад
Chris O'Neil there are some small extras from this video coming to Numberphile2 - but not that solution I'm afraid.
@EebstertheGreat
@EebstertheGreat 9 лет назад
Numberphile Is the solution really that tedious?
@joaomelo7538
@joaomelo7538 9 лет назад
EebstertheGreat Its just solving five variables system, nothing big...
@EebstertheGreat
@EebstertheGreat 9 лет назад
João Melo There's a lot more to it than that, though. That just tells you the sum of each color.
@joaomelo7538
@joaomelo7538 9 лет назад
yes, that's my point, if haven't understood I was being sarcastic. A five equation system takes too much time for a video
@Azmarith
@Azmarith 9 лет назад
What's got 6 sides and isn't here any more? A hexagone.
@Triantalex
@Triantalex 9 месяцев назад
??
@Azmarith
@Azmarith 9 месяцев назад
@@Triantalex A hexagon has six sides. But it's gone. So it's a hexa-gone.
@DouglasZwick
@DouglasZwick 8 лет назад
Oh man I laugh out loud at 1:50 every time
@BattousaiHBr
@BattousaiHBr 6 лет назад
i cant even understand what he's saying "if you want to edit and cut to xxxxxx" ?
@EchoHeo
@EchoHeo 6 лет назад
BattousaiHBr thats the point
@General12th
@General12th 8 лет назад
Brilliant video! Brilliant explanation, brilliant subject, brilliant professor. Simply intelligent.
@neelmodi5791
@neelmodi5791 9 лет назад
Exponentiation of each number in the hexagon leads to a magic multiplicative hexagon!
@AuroCords
@AuroCords 8 лет назад
+Neel Modi please explain 0.0
@pokestep
@pokestep 8 лет назад
+Auro Cords I believe what they meant is that if you had a magic hexagon (or a square, works there too) with any number to the power of numbers in the magic square (or a hexagon) and you multiplied them within rows, you'd get the same number! Observe: For the usual 3x3 magic square, with rows of (6,7,2) (1,5,9) (8,3,4), if instead you had numbers like (2^6, 2^7, 2^2) (2^1, 2^5, 2^9) (2^8, 2^3, 2^4), which equals (64, 128, 4) (2, 32, 512) (256, 8, 16) and multiplied them (rows, columns, diagonals), they'd give you the same number! (2^15 or 32 768). The reason this works is because of the way exponentiation works - if you multiply numbers, such as a^b and a^c, the result is a^(b+c), you get the sum of the powers! (Observe: 2^2*2^3 = 4*8 = 32 = 2^5.) This works for any base number (i.e. you can have 3^x, 10^x is especially nice because you only add 0s, e^x... it's up to you!). Hope that helps and answers your question!
@AuroCords
@AuroCords 8 лет назад
Amazing! I had forgotten about that property, I guess the original comment should have said "Exponentiation *to* each number in the hexagon..." I didn't quite get the last part of what you said: " (i.e. you can have 3^x, 10^x is especially nice because you only add 0s, e^x... it's up to you!)." Thank you =]
@pokestep
@pokestep 8 лет назад
+Auro Cords You're welcome! What I meant by that part is that it doesn't need to be powers of 2 like I showed you, but it can also be powers of 3, powers of 10 (especially nice because then you're only adding 0s to the numbers, i.e. you get (100,1000000000,10000) (10000000,100000,1000) (1000000,10,100000000) I think), it can be powers of e - that is totally up to you! The sum of exponents during multiplication applies to any number. :)
@AuroCords
@AuroCords 8 лет назад
Ah yes, that's what I understood but wasn't sure. This is why I love maths, gotta get some practice tho to keep the brain slick. tx again!
@LLHLMHfilms
@LLHLMHfilms 8 лет назад
Now I want to play the settlers of catan
@MMorangatang
@MMorangatang 8 лет назад
Same
@thepip3599
@thepip3599 8 лет назад
Me too.
@thepip3599
@thepip3599 8 лет назад
+The Pip Man, I love that game.
@McJaews
@McJaews 9 лет назад
Thank you Brady:) It's always great hearing Dr Grime talk about math. I did, however, notice a distinct lack of prime numbers in this video, and was wondering if there were any interesting mathematical things going on with geometric shapes that have a prime number of sides. I find it hard to imagine that there isn't.
@PC_Simo
@PC_Simo Год назад
Well; the regular pentagon has a prime number of sides (5); and its diagonals bisect each other in the golden ratio, which is very much related to the Fibonacci numbers; and the Fibonacci numbers seem to me to contain relatively more primes, than any old random sequence; which, I guess, makes sense, given that the golden ratio is kind of like the most irrational number there is; so, if I expected primes to show up anywhere, it’s definitely in the Fibonacci sequence 🤔.
@daggawagga
@daggawagga 8 лет назад
10:00 are Grime's birthmarks the vertices and center of an equilateral triangle?
@aves8964
@aves8964 8 лет назад
Illuminati confirmed.
@daggawagga
@daggawagga 8 лет назад
***** if it was an equilateral triangle, it would be all of them! (I loved that one video)
@NoriMori1992
@NoriMori1992 8 лет назад
+Daggawaggaboof It looks like it _is_ an equilateral triangle!
@jacecockayne2054
@jacecockayne2054 6 лет назад
What an awesome birth mark
@mclam168
@mclam168 4 года назад
3 zeros in the time stamp. 3 side in a triangle. Illuminati confirmed.
@najiali1068
@najiali1068 9 лет назад
I love the way counting the sum of all numbers in one hexagon. Very nice video. I like your way of clearing up things. Thank you.
@SaveSoilSaveSoil
@SaveSoilSaveSoil 3 года назад
Nice! I never paid attention to these magic n-gons! Thank you for raising my awareness!
@abigailcooling6604
@abigailcooling6604 2 года назад
I'm sure Matt Parker will create another magic hexagon that *almost* works. You've always got to give things a go!
@svz5990
@svz5990 9 месяцев назад
You mean a Parker hexagon?
@burpie3258
@burpie3258 9 лет назад
1:52 can't stop laughing
@michaelgerda494
@michaelgerda494 6 лет назад
awsomm
@minnermin
@minnermin 5 лет назад
Lol
@hiwadwardak2410
@hiwadwardak2410 8 лет назад
8:35 to 8:44
@NoriMori1992
@NoriMori1992 8 лет назад
My favourite part. XD
@whitherwhence
@whitherwhence 8 лет назад
#HardcoreMaths
@frawding9438
@frawding9438 6 лет назад
Any Parker hexagons?
@rewrose2838
@rewrose2838 3 года назад
120 of them all got rejected at the end in the favour of the correct one 😂
@awaiskhan_47
@awaiskhan_47 Год назад
Another James Grime classic!
@Ollervo100
@Ollervo100 9 лет назад
James you are awesome! Keep up the good work!
@KunamaElgar
@KunamaElgar 9 лет назад
While I enjoy numberphile videos they usually go right over my head! I actually understood this video and followed his thinking all the way through so I really liked it.
@AlbinosaurusR3X
@AlbinosaurusR3X 9 лет назад
Love your show, Numberphile.
@MKWKezer
@MKWKezer 9 лет назад
Very nice and not too hard either! You should do more videos, I love them, James :)
@Richard_is_cool
@Richard_is_cool 9 лет назад
Thank you! Also, will there be a Mandelbrot Set continuation? It's been more than a month. :) Keep up the good work!
@natereniger8773
@natereniger8773 9 лет назад
Dr. Grime is so fun to listen to... I wish I could do my whole undergrad over again where he teaches every class.
@thermotronica
@thermotronica 9 лет назад
Beautiful video!
@dominikf.1409
@dominikf.1409 9 лет назад
I love the singing banana
@creature_from_Nukualofa
@creature_from_Nukualofa 9 лет назад
I get the same feeling as reading a chapter by Martin Gardner. thanks Brady, thanks James for the wonderful content! ND
@robzwolf
@robzwolf 9 лет назад
Really good video. Great chromakeying with the blue writing too, and very interesting to watch. Love it! :-)
@brandonhorvath5881
@brandonhorvath5881 9 лет назад
Thank you for blowing my mind once again.
@YindiOfficial
@YindiOfficial 9 лет назад
James' videos are my favorite tbh.
@nonitta
@nonitta 9 лет назад
This is Amazing, I find this so interesting! Thank you for teaching me something new!
@lejink
@lejink 9 лет назад
Dr James Grime is my favorite :)
@leonhrad
@leonhrad 9 лет назад
I want a t-shirt with a magic hexagon on it
@venweera4516
@venweera4516 8 лет назад
@8:33 there is a slight addition error, happens to the best of us
@CraftQueenJr
@CraftQueenJr 6 лет назад
Ven Weera It has to have all unique numbers
@billymatthews4150
@billymatthews4150 3 года назад
3:12
@johnkat4391
@johnkat4391 9 лет назад
Numbers that can't be in the same row in a 3x3 magic square: 1,2 1,3 2,3 7,8 7,9 8,9 7,4 3,6 Also, 4 needs to be in a row with 5 or 6. 5 with 4 or 6. 6 with 4 or 5. There are probably other numbers that can't be together or have to be together, but this is what I've found so far.
@johnkat4391
@johnkat4391 9 лет назад
Sorry, let me correct that. (I am on mobile so I can't edit it.) A 3x3 magic square where you can only use numbers 1-9 and the answer needs to be 15.
@johnkat4391
@johnkat4391 9 лет назад
Another correction! You can only use each number once.
@gregotox
@gregotox 8 лет назад
he`s so happy about it! :D
@dr-baboul3077
@dr-baboul3077 9 лет назад
Good work !!
@jsnadrian
@jsnadrian 9 лет назад
Having Dr Grime must be such a fun lecturer to have
@TheConnor12500
@TheConnor12500 9 лет назад
Could you perhaps do a video on slide puzzles? I've been doing lots recently and can never do a scrambled 4x4 in less than around 60 moves, is there a number of moves all can be completed in like Gods Number, and how about for a nxn puzzle? Love the videos!
@kattay11
@kattay11 9 лет назад
This went whoosh, over my head. But I love his dimple
@ultravidz
@ultravidz 9 лет назад
Great one!
@MartinMllerSkarbiniksPedersen
@MartinMllerSkarbiniksPedersen 9 лет назад
Fantastic. Thanks a lot.
@LesMiserables999
@LesMiserables999 8 лет назад
You're my magic hexagon James...
@Ahov
@Ahov 9 лет назад
Wow, grats on 1m subs!
@jsunny22
@jsunny22 4 года назад
The magic hexagon is in the shape of the flower of life.
@Radii_DC
@Radii_DC 8 лет назад
0:58 NICE! :D
@7777stine
@7777stine 9 лет назад
8:22 That Smile!!! LOL! This guy loves numbers clearly
@brankodimitrijevic382
@brankodimitrijevic382 9 лет назад
Great videos watching from Serbia!
@xvipes
@xvipes 9 лет назад
Welcome back James
@DreamFreeFPV
@DreamFreeFPV 9 лет назад
Not going to lie. My interest in watching this was to get better at settlers @numberphile
@constantinefreeman1637
@constantinefreeman1637 9 лет назад
Awesome video! Will there be anything on Klein bottles?
@christianavery5518
@christianavery5518 9 лет назад
Reminds me of a game we used to play in maths class called 'Nubble'. The maths of the game has nothing in common with the video but there were numbers in hexagons which formed a large hexagon.
@liamogrady5868
@liamogrady5868 2 года назад
"And the diagonals too!" Matt Parker: what.
@zerid0
@zerid0 9 лет назад
Poor empty hexagon, he didn't even get mentioned :'(
@ZardoDhieldor
@ZardoDhieldor 9 лет назад
Yeah! And what about n=-3! :(
@louisng114
@louisng114 9 лет назад
Zardo Schneckmag n = -3 would make the denominator 0; better make it n = -2.
@ZardoDhieldor
@ZardoDhieldor 9 лет назад
louisng114 n=-3 would make a denominator of -5. A denominator of zero never appears.
@louisng114
@louisng114 9 лет назад
Zardo Schneckmag Oops, I mean "makes the denominator -7."
@ZardoDhieldor
@ZardoDhieldor 9 лет назад
louisng114 Yeah, whatever! :D I'm used to calculate with 2n+1 more than 2n-1.
@CodyBenson13
@CodyBenson13 9 лет назад
Very interesting. I have to say though, I only really watch when James is in the videos.
@acediamond5399
@acediamond5399 9 лет назад
Amazing! Great video. Seems a bit miraculous that even the 3-layer hexagon works.
@leonardomona9376
@leonardomona9376 8 лет назад
+Ace Diamond theres nothing miraculous about it, its just a coincidence, things would be different if the numbers used is base 6 not base 10
@acediamond5399
@acediamond5399 8 лет назад
Well yeah, that's kinda what I meant, not a literal miracle, lol.
@acediamond5399
@acediamond5399 8 лет назад
But, besides the point, this concept is base-independent.
@rywilk
@rywilk 8 лет назад
Very cool! I'll have to give this a go in my spare time =p
@aurabozzi228
@aurabozzi228 7 месяцев назад
This is a beautiful proof!
@jlolme
@jlolme 9 лет назад
I'M CRYING AT BRADY'S EDITING
@TheSleepingAsian
@TheSleepingAsian 9 лет назад
Kept seeing the "Settlers of Katan" board when I saw the Hexagons, haha.
@tedchirvasiu
@tedchirvasiu 9 лет назад
Awesome!
@BiffTech05
@BiffTech05 5 лет назад
8:31 The Highlander magic hexagon
@willtang2314
@willtang2314 9 лет назад
Amazing!
@mmotwani1
@mmotwani1 9 лет назад
Hello Brady...I recently saw some news about people winning the Fields Medal. And I am really interested as to what were the works on which the winners were awarded the prize? Is it possible for you to do a video on that?
@TimmahDee
@TimmahDee 9 лет назад
Not sure if editing humor at 1:52... or just mistake during editing...
@choco_jack7016
@choco_jack7016 6 лет назад
I think it says "sort of edit and cut to hoint (idk) with theee so..."
@thrillscience
@thrillscience 9 лет назад
Sorry, James! That's not the only magic hexagon. I have one just like it here!
@hezronzimba763
@hezronzimba763 7 лет назад
YOU ARE THE BEST
@TheDiggster13
@TheDiggster13 9 лет назад
This is great! I really love proofs like this. Has it been used for anything practical yet or is it still just in the realm of recreational mathematics?
@TheEternalHermit
@TheEternalHermit 9 лет назад
Question, you have a 8 1 6 | 3 5 7 | 4 9 2 magic square as mentioned in the video, it would seem to me that if the magic hexagon has to be able to work from any angle with any number of hexagons then why doesn't the magic square have to say add up to the magic number when you take say 1 from the top row middle column and 7 from the middle row right column?
@JoshDan12
@JoshDan12 9 лет назад
YES!
@skhalid360
@skhalid360 9 лет назад
For a moment, when James started adding the numbers 1 + 2 + ... + nn, I was lost. But then I remembered that a magic square must be made of all the numbers up to and including nn. Also, are there any other magic hexagons if we remove the constraint that the numbers have to be from the set {1, 2, 3, ..., 3n(n -1) + 1} only? Like, could we use distinct whole numbers not necessarily from that set to fill out the honeycomb, and still get this effect? It seems to me that that problem would have a much more involved and non-elementary solution than this one.
@TakeWalker
@TakeWalker 9 лет назад
That was really fun. :D
@hawaianico
@hawaianico 6 лет назад
Great video! Thanx, im now thinking aboyt it in dozenal would be the formula nicer
@PhoenixSong412
@PhoenixSong412 6 лет назад
Brilliant
@hornick18
@hornick18 9 лет назад
Lol, when Brady edited. That was hilarious
@nileshjambhekar7699
@nileshjambhekar7699 8 лет назад
Can you guys do a video on the hodge conjecture?
@Eliina552
@Eliina552 9 лет назад
James is my fave guest :)
@tsjoencinema
@tsjoencinema 9 лет назад
Mind blown.
@moppop275
@moppop275 3 года назад
when he checked the magic hexagon of n=1 I died.
@anon8109
@anon8109 9 лет назад
Lovely. It's surprising that it's possible to tease out 3 independant equations by adding up rows in different ways. Are there any other magic shapes?
@zevvery
@zevvery 9 лет назад
What if you extend magic squares/hexagons so that you still have to use consecutive numbers, but you don't have to start with the number 1? So instead of 1 through 61, you could use 0 to 60, 4 tp 64, -30 to +30...
@Adamantium9001
@Adamantium9001 9 лет назад
What if you remove the requirement that the numbers in the cells have to be 1 through n?
@Zack0ry
@Zack0ry 9 лет назад
its cool how you just added his handwriting instead of a preset font :)
@Mustardear
@Mustardear 9 лет назад
Perhaps it would have been a little clearer if the coloured hexagons were turned over during the section from about 9:00, to make it clear that we don't know where all the numbers should be yet. Just a suggestion in case you do a similar video in the future, great work as always!
@Fewawidood
@Fewawidood 9 лет назад
At the end, it said that that were 120 possible combinations that were rejected, with one solution. Those add up to 121 with is 11^2. The only other magic hexagon is the 1 hexagon, with has only one combination, which is 1^2. Is there any pattern there with hexagons of different sizes where the total number of combinations is a square number?
@Skawrod
@Skawrod 9 лет назад
woah really cool vid
@Tobis0x00
@Tobis0x00 9 лет назад
Dr James Grime said "There can be only one..." He's my new hero. The Highlander of Hexagons!
@sevilus7812
@sevilus7812 2 года назад
Thanks
@Marcara081
@Marcara081 9 лет назад
Nice edit! XD
@TheAAMoy
@TheAAMoy 9 лет назад
FYI, this fucking ROCKS!
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