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G4G Celebration
United States
Registrace 8. 10. 2014
Gathering 4 Gardner (G4G) is a conference, a foundation, and a community of people who share some of Martin Gardner’s many interests, which include recreational mathematics, puzzles, magic and skepticism.
Celebration of Mind (CoM) is a worldwide series of events held on or around Gardner’s birthday: October 21st. Anyone, anywhere, can host a CoM event, and most are open to the public. These CoM events vary in size from three people meeting to perform rubber-band magic for each other, to crowds of hundreds of students in highly organized exploratory paper folding activities.
Celebration of Mind (CoM) is a worldwide series of events held on or around Gardner’s birthday: October 21st. Anyone, anywhere, can host a CoM event, and most are open to the public. These CoM events vary in size from three people meeting to perform rubber-band magic for each other, to crowds of hundreds of students in highly organized exploratory paper folding activities.
Ivars Peterson - Patterns in a Botanical Garden - G4G15 February 2024
Mathematics can help illuminate and enrich our understanding of the many patterns found in a botanical garden. Instances of symmetry, tilings, fractals, Fibonacci numbers, and spherical geometry, all among Martin Gardner's favorite topics, appear among the plants and structures of the Santa Fe Botanical Garden.
zhlédnutí: 93
Video
Skona Brittain - A Collection from the Collection of Collections - G4G15 February 2024
zhlédnutí 86Před dnem
Just a variety of specific things collected from the 15 books of collected Scientific American columns, in honor of G4G15 of course.
Roger Penrose - On the Escherization of David Smith's "SPECTRE" Einstein - G4G15 February 2024
zhlédnutí 819Před 14 dny
Roger Penrose - On the Escherization of David Smith's "SPECTRE" Einstein - G4G15 February 2024
G4G Auction Preview 2024
zhlédnutí 285Před 3 měsíci
The Zoom Auction Preview features a few special G4G-style presentations, provides details on how the auction will work, and showcases a selection of auction items. Check out this sneak peek at the list of exciting and exclusive items!
Vincent J. Matsko - Algorithmic Puzzle Design - CoM Jan 2023
zhlédnutí 335Před 10 měsíci
The use of computer algorithms allows for designing puzzles which otherwise would be near impossible to create. Consider a puzzle involving 12-letter words which consist of four threeletter words, such as LITHOGRAPHER. How many such words are there? A brief algorithm searching a 90,000-word dictionary finds 21. Or what is the unique English word containing the sequence of letters “elg”? Yes, “d...
Tony Mann - John Buridan’s Self-referential Paradoxes - CoM Dec 2022
zhlédnutí 305Před 10 měsíci
The name of the fourteenth-century philosopher John Buridan is associated with the hypothetical ass which starved to death because it could not choose between two equally attractive bales of hay. This talk will relate colourful legends about Buridan’s life, and will mention some of his other mathematical ideas, but will focus on his remarkable analysis of self-referential paradoxe Tony Mann tea...
Ein Stein Revisited - The Spectre Tile - CoM - June 4, 2023
zhlédnutí 14KPřed 11 měsíci
G4G hosts a session to celebrate the announcement by Craig S. Kaplan that he and teammates David Smith, Joseph Samuel Myers, and Chaim Goodman-Strauss have improved on their earlier discovery of the Ein Stein tiling: the new Spectre tiling uses a single tile (without mirror images) to tile the infinite 2D plane aperiodically (and only aperiodically). Video links mentioned in the session: 32:31 ...
Carlos Pereira dos Santos - Planet Smullyan - CoM July 2022
zhlédnutí 256Před rokem
Raymond Merrill Smullyan (1919-2017) was an American mathematician, magician, pianist, logician, Taoist, philosopher, and amateur astronomer. He was a brilliant logician, having significantly contributed for a better understanding of Gödel’s theorem. Smullyan, a close friend of Martin Gardner, was one of the most relevant recreational mathematicians that ever lived, having published many master...
Ed Vogel - Mining the Soma Cube for Gems - CoM Oct 2022
zhlédnutí 295Před rokem
Video Links: Link 1: 33:27 blogs.mathworks.com/cleve/2016/03/28/piet-hein-super-ellipses-and-soma-cubes/ Link 2: 33:52 toytales.ca/soma-cube-from-parker-brothers-1969/ Link 3: 34:49 Wilfred J Hansen, "Equivalence Classes Among Pentomino Tilings of the 6x10 Rectangle," Report CMU-ITC-092, Information Technology Center, Carnegie Mellon (January 1991). www-2.cs.cmu.edu/ Soma cubes are an example o...
Pedro Freitas - Dividing the Circle, a Problem for Both Mathematicians and Artists - CoM Sept 2022
zhlédnutí 330Před rokem
The problem of dividing the circle in equal parts has accompanied the history of mathematics, with contributions ranging from Euclid to Gauss. The problem was also addressed by artists such as Dürer, with different motivations and points of view. In this talk we will briefly overview a few of these contributions, and see how some 20th century artwork has even taken this topic as one of its cent...
Ingrid Daubechies - Mathemalchemy - G4G14 Apr 2022
zhlédnutí 323Před rokem
Ingrid Daubechies - Mathemalchemy - G4G14 Apr 2022
Celebrating the Ein Stein - CoM - March 26, 2023
zhlédnutí 2,4KPřed rokem
G4G hosts a Zoom session to celebrate the extraordinary announcement by David Smith, Joseph Samuel Myers, Craig S. Kaplan, and Chaim Goodman-Strauss of the discovery of an aperiodic monotile: a single tile which (along with its mirror image) tiles the infinite 2D plane aperiodically. Video links mentioned in the session: 20:19 mathartfun.com/TessPuzzles.html 30:17 www.t3puzzle.com/a/ 58:26 gith...
Ars Combinatoria - David Singmaster submitted by Michele Emmer
zhlédnutí 484Před rokem
The clip with David, filmed in his studio in London at the Poly, is part of the movie Ars Combinatoria, part of my series of movies on Art and Math, 18 movies of 30minutes. The film Ars Combinatoria included the famous artist Max Bill in his Zurich Sudio, the mathematician Roberto Magri in Siena, the Italian Painter Luigi Verones in his atelier in Milan and paintings of Mondrian filmed in the G...
Delicia Kamins - Beware You All, Something Fourteen This Way Comes - G4G14 Apr 2022
zhlédnutí 114Před rokem
My presentation is the "Anti-Fourteen" response to "Dr. Matrix's Pro-Fourteen" presentation. In it, I will both counter/attack Dr. Matrix's veneration of the number fourteen, as well as share with G4G14 attendees some of the more sinister aspects of the number fourteen.
Stephen Macknik - Champions from The Best Illusion of the Year Contest - G4G14 Apr 2022
zhlédnutí 1,4KPřed rokem
A brief look at some of the Best Illusions of the Year from illusionoftheyear.com/
Scott Vorthmann - Customizing Zometool - G4G14 Apr 2022
zhlédnutí 365Před rokem
Scott Vorthmann - Customizing Zometool - G4G14 Apr 2022
Delicia Kamins - Fractal Top Down - G4G14 Apr 2022
zhlédnutí 140Před rokem
Delicia Kamins - Fractal Top Down - G4G14 Apr 2022
Peter Knoppers - 2e9s - an Egocentric View of Time - G4G14 Apr 2022
zhlédnutí 105Před rokem
Peter Knoppers - 2e9s - an Egocentric View of Time - G4G14 Apr 2022
Lew Lefton - Mathematical Comedy - G4G14 Apr 2022
zhlédnutí 353Před rokem
Lew Lefton - Mathematical Comedy - G4G14 Apr 2022
Daniel Kline - Playing with Puzzles: A Sample of What's New at the JRMF - G4G14 Apr 2022
zhlédnutí 209Před rokem
Daniel Kline - Playing with Puzzles: A Sample of What's New at the JRMF - G4G14 Apr 2022
Jorge Nuno Silva - Magic & Problems From Half a Millennium Ago - G4G14 Apr 2022
zhlédnutí 200Před rokem
Jorge Nuno Silva - Magic & Problems From Half a Millennium Ago - G4G14 Apr 2022
Miquel Duran - Quantum Science & Card Magic: From Basic Concepts to Cryptography - G4G14 Apr 2022
zhlédnutí 213Před rokem
Miquel Duran - Quantum Science & Card Magic: From Basic Concepts to Cryptography - G4G14 Apr 2022
Oded Margalit - Wrong Mathematical Proofs for Possibly Correct Claims - G4G14 Apr 2022
zhlédnutí 856Před rokem
Oded Margalit - Wrong Mathematical Proofs for Possibly Correct Claims - G4G14 Apr 2022
Justin Kalef - The Whys (& Hows) of a Philosophy Teacher - G4G14 Apr 2022
zhlédnutí 150Před rokem
Justin Kalef - The Whys (& Hows) of a Philosophy Teacher - G4G14 Apr 2022
Erik Demaine - New Adventures in Puzzle Fonts - G4G14 Apr 2022
zhlédnutí 422Před rokem
Erik Demaine - New Adventures in Puzzle Fonts - G4G14 Apr 2022
George Bell -Flippe Top - G4G14 Apr 2022
zhlédnutí 193Před rokem
George Bell -Flippe Top - G4G14 Apr 2022
Barry Cipra - A Toroidal Looping Puzzle - G4G14 Apr 2022
zhlédnutí 207Před rokem
Barry Cipra - A Toroidal Looping Puzzle - G4G14 Apr 2022
Haym Hirsh - The Soma Renaissance - G4G14 Apr 2022
zhlédnutí 263Před rokem
Haym Hirsh - The Soma Renaissance - G4G14 Apr 2022
Jeanine Meyer - Mathematics with Explanation - G4G14 Apr 2022
zhlédnutí 172Před rokem
Jeanine Meyer - Mathematics with Explanation - G4G14 Apr 2022
Koji Fujimoto - The Actual 26 Integers for a Diophantine Representation - G4G14 Apr 2022
zhlédnutí 237Před rokem
Koji Fujimoto - The Actual 26 Integers for a Diophantine Representation - G4G14 Apr 2022
I will not call it budha, i will call it Chtulhu (with two more tiles on each side)
Thank you, Sir Roger! ❤🙏❤
If you want a new idea: open an old book. Such a delight to hear from Roger Penrose.
12:42 "there's a link on the webpage i shared earlier". Wouldn't it be more fair if you could add a link to this site and library in the video description? Please?
I miss you my dear friend! R.I.P
I understand Conway was brilliant, and I can see that his manner is ingratiating, but I have never seen him lecture in a coherent, organized way. This lecture is hilarious. 10 minutes into the video, someone thought, "Hmmm. Maybe I better move the camera?" Anyone know why the Prof. sang "Boron?" He promised to explain, but never did. And no, I have no idea what chemical pi is. Maybe something like Cottleston pie?
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I was hoping that one of the methods you showed would be using Archimedean Spiral
I wonder if these shapes could be applied to fractals. I am reminded of Mandelbrot. How everything is eternally connected.
great but sooo quiet
There are no deities in Buddhism. Buddha was a human who got enlightened and became a teacher.
Amazing talk! ❤
Such an inspirational man.
excellent. where can we learn more about this stuff?
Rest in Peace you wonderful man.
Loved the book!
Professor Kauffman's lecture is generative and I appreciate it.💓\^^/ ① The Lorentz transformation associated with movement within a quantum or space is composed of a Pauli spin matrix, which is the same as the movement of the robot arm Reidemeister 1. ②The octonion of John Thomas Graves with a direction is the movement of Reidemeister 1, 2 and 3 by Joyce's quandle, which is the same as the movement of a robot manipulator to knit without getting tangled with the thread and cutting it. It understands the movement of knitting sticks and can respond to the movement of spinning a hanging ball.
He so smart, most Crowds can’t keep up and just don’t get it!
I wish I had tutorials for all these beautiful patterns 😅
44:05 I think there is a requirement that the path isn't itself mirror-symmetric, right? Anything else ought to work so long as it doesn't accidentally introduce a new tiling somehow, which would be crazy
In the first example, how is the mark on the straightedge to be determined?
Here’s because of George’s hidden fairy castle log from TikTok! So fricking cool!
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I like that Ein Stein in German can be translated to "One Tile".
I'll be honest. Tom7 and this guy are pretty much the reasons I'm into type
behold pikachu einstein tile czcams.com/users/shortsPOkEs2t0h3g
Hi!
Fabulous interview and amazing to see the extent the Puzzle Palace had achieved before heading for Italy. Looking forward to spending some time in the future there and seeing the many different categories of puzzles. What a treasure trove of "sweets" George and Roxanne have amassed and made into a worldwide resource for all concerned. Congratulations to you both
Very Concise, to bad about the mistake in the octonions talk it just confused things more. I'm sure the Grad student that created the slides got a good talking to. (even though he took responsibility for the errors )
How does this have so few views - Hotcrystal0 from the forums
its so cool to envision the mandlebrot set and these tiles combining to create realtime construction and infinite scope lenses with Ising models.
As if quaternions weren't enough, they start asking for the octonions.
Few remember that the problem, as presented here, isn't the original problem. It is one _implementation_ of the problem, proposed by Adam Elga in 2000, that he used to justify the thirder solution as presented around 3:15. The actual problem simply states that SB will be wakened once, or twice, based on the coin flip. Elga "subdivided" the Tails event into two that he felt he could treat independently. Halfers disagree, and the debate centers on that issue, not the actual problem. This presentation, in my opinion, is just an equivocation that attempts to justify both sides of that debate at the same time. And it is wrong: the question asks about a past event, as viewed in the present. Say I draw a card from a standard deck, and tell you that it is a red card. Whether I ask you for the probability that I now hold the Ace of Hearts, or that I drew the Ace of Hearts, the answer is 1/26. There is a better way to implement the SB problem. One that produces a clear, unequivocal answer. Yet I still don't expect everyone to believe it; like the Monty Hall Problem, people like to stick to their original answer. On Sunday Night, flip two coins: C1 and C2. On Monday Morning perform this "internal experiment" : (1) If either coin is currently showing Tails, wake SB; otherwise, end the internal experiment. (2) Ask SB for her "degree of certainty" that coin C1 is currently showing Heads. (3) After SB answers, put he back to sleep with amnesia' But then, on Monday night after SB falls (or still is) asleep, _turn_ _coin_ _C2_ _over._ And repeat the same "internal experiment" on Tuesday. Before looking for an answer, note that (A) on either day, coin C1 is currently showing the same face that it landed showing, (B) If coin C2 lands on Tails, the two-day procedure is the same as in the video, and (C) If coin C2 lands on Heads, it is equivalent since it just changes the day SB might sleep through. From (A) we see that there is no ambiguity about the tense of the question, and from (B) and (C) we see that its answer must be the same as the better-remembered version. But this can be answered, since SB has full knowledge of the "internal experiment." When the coins were examined in step 1, there were four equally-likely combinations: HH, HT, TH, and TT. But the fact that SB is awake, and in step 2, means that HH is eliminated. The remaining three possibilities include only one where C1 is showing Heads. The answer is 1/3. The reason Halfers get a different answer, is that they only consider the "external experiment" where the two wakings SB experiences if C1 lands on Tails are the same event. This has nothing to do with "importing" or "time wrapping." It is failing to acknowledge that SB's experiences don't allow her to see those two wakings as the same event.
Great talk! Is it possible to get a pdf of the slides?
Fantastic job! Would be great if you could add a 4-colours scheme!
Interesting thoughts on the egg of Columbus. The Italian architect Brunelleschi supposedly used a similar concept to demonstrate how he would get the duomo in Florence to stand.
Freeze at 1:28 and it starts to make sense. I have no idea whether this is a unique set of results from a only one 3x3, or how he discovered these higher-order patterns. Or what drove him to even look. Maybe it's all long known by some specialized mathematicians: he suggests that it is known, but not widely.
I love it. While watching the video I was constantly thinking 'Oh, I would totally do this in GrassHopper', and then it turned out she actually also used GrassHopper! :)
thank you
Great fun, thanks. I've been mapping Langford pairing solutions onto the vertices of regular polygons printed off the internet and ruling straight lines between them just to see what happens. So when n=7, the polygon has 14 vertices and straight lines between the two 7s, the two 6s, and so on down to the two 1s. I noticed in the several examples of Langford solutions I looked at so far that whenever these lines intersect to form an isosceles triangle the apex measures 51 degrees as accurately as I can, which is very close to 360/7. I don't know what to make of that, especially as this apex angle to n relationship doesn't seem to apply to other values of n for which there are Langford solutions, such as 8.
perfecttt
This guy is a fkin genius
This gentleman is still the most impressive of all mentalists. Many years ago I wrote to him and I was told he would never reply to an amateur. I received a very encouraging handwritten letter from Mr Maven. R.I.P. Sir.
On a sphere please 🤞🕊️📽️ Torus... Conics...
Le varie animazioni con quale programma le ottieni.
Desmos
Grazie
Dave Smith is so humble. He is the hero.
Looking like Karl Marx
*Consider another experiment:* A coin is flipped and if it is Heads you are directed draw a marble from bag A that contains 5 White marbles and 5 Black marbles. If it is Tails you are to draw a marble from bag B that contains 9 Black marbles and 1 White marble. The experiment is run: The coin is flipped and the result of the coin flip is concealed from you. You are presented with a bag and directed to draw a marble from it. You know that the bag presented to you is either Bag A or Bag B but since the result of the coin flip was concealed from you, you are unsure which bag you are drawing from. After running the experiment you ended up with a Black marble. What is the probability that Heads was the result of the initial coin flip? *Discuss.*
Not much to discuss. This is a classic Conditional Probability Problem. Pr(Heads)=Pr(Tails)=1/2. Pr(Black|Heads) = 5/10. Pr(Black|Tails) = 9/10. Pr(Tails|Black) = Pr(Black|Tails)*Pr(Tails)/[Pr(Black|Heads)*Pr(Heads) + Pr(Black|Tails)*Pr(Tails)] Pr(Tails|Black) = (9/10)*(1/2)/[(5/10)*(1/2)+(9/10)*(1/2)] = 9/(5+9) = 9/14 = ~= 64.3% It is classic, because all of the events used are clearly independent. The issue in the SB problem is whether events that are dependent to an outside observer, can be treated as independent by the volunteer who might lose her memory between them.
@@jeffjo8732 Isn't the answer 5/14?
@@sauveerdixit7145 Well, if you want to address the question that was literally asked, yes. I just lost track of the literal question. I answered "What is the probability that Tails was the result of the initial coin flip?" The two use essentially the same solution, since Pr(Heads|Black)+Pr(Tails|Black)=1.
@@jeffjo8732 Right. I didn't realise that you calculated for Tails.