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12:59 AM | The Hot Hand Is Real! (Video)

Earlier this week I posted about a new working paper that says the hot hand is real. This is a bold claim that contradicts a famous 1985 paper that concluded the hot hand did not exist, that it was a fallacy. What gives? The new paper says the 1985 paper made a subtle statistical mistake. … Continue reading The Hot Hand Is Real! (Video)

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11:33 PM | What makes a pattern?

Last year, a large fraction of the small amount of math that Katie did in Kindergarten consisted of basic patterns. “Red, blue, red, blue, red” what comes next? And the more advanced version of that with three repeating colors or … Continue reading →

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11:21 PM | We’re dead. Again.

It seems as though komplexify has died. Again. I cannot get Yahoo, which hosts the site, to play nice with WordPress anymore. In particular, I keep getting the same error when I try to download and/or update the site, viz. … Continue reading →

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"Αν οι εξισώσεις είναι τρένα που διασχίζουν την χώρα των αριθμών,τότε κανένα τους δεν σταματά στο
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6:38 PM | The Mpemba Paradox

As a mathematician I love mathematical paradoxes because they are disturbing and thought-provoking. For example, Parrondo's Paradox tells us something counter-intuitive about probabilistic games; Simpson's paradox reminds us that we have to think carefully about statistics; and Curry's paradox is just mind-bending.Paradoxes in the sciences are important because they make us think about our theories and where they don't quite match reality, driving new scientific ideas. My
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12:00 PM | Flat House

The illusory House I by Roy Lichtenstein, Sculpture Garden, National Gallery of Art, Washington, D.C.
For other NGA Sculpture Garden sights, see "Fountain Parabolas," "LeWitt's Pyramid," and "Octahedral Moondog."
Photos by I. Peterson

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11:15 AM | Calling All Publishers...

via Stilfehler/WikimediaCommons
Ben Orlin tapped my funny bone again this week... and brings out the toddler in all of us... with this offering on the role of rote repetition/practice in learning and mastery:
http://mathwithbaddrawings.com/2015/10/07/practice-math-like-a-baby/
p.s... It will be a missed opportunity (and a loss to present and future generations), if some publisher out there

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6:11 PM | Tutoring on Stationary Points

A short post on something funny and interesting that happened last week in one of my tutorial sessions. This year I started tutoring for Higher Maths, for those of you that don’t live in UK, or don’t know what this is, here is the official website about it: Higher. The story started probably 2 weeks […]

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4:11 PM | Puzzlebomb – October 2015

Puzzlebomb is a monthly puzzle compendium. Issue 46 of Puzzlebomb, for October 2015, can be found here: Puzzlebomb – Issue 46 – October 2015 The solutions to Issue 46 will be posted at the same time as Issue 47. Previous issues of Puzzlebomb, and their solutions, can be found here.

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No summary available for this post.

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12:00 PM | Pi Doors

Pi door handles, National Museum of Mathematics, New York City.
For other appearances of pi, see "Pi Places" and "DC Pi."
Photos by I. Peterson

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11:25 AM | Ubiquitous Benford

Princeton University Press presents this offering on Benford's law:
http://tinyurl.com/qhfmccy
...and Benford also shines through in this recent video from Numberphile discussing the powers of 2:

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7:30 AM | 99,980,001

10/09/2015 This is a Sequence Number that counts from 0000 to 9997, using four
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6:44 AM | Practice Math Like a Baby

I’ve always felt conflicted about repetitive practice. But a baby showed me the way. Continue reading →

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10:40 PM | Check In - Random Musings

We are right around a month into the school year, so I thought it might be a good time to do a general check in. A few of my recent posts have been pretty long winded (I just have a lot of feelings okay!?), and I have a few random notes and ideas to share that are not […]
The post Check In - Random Musings appeared first on Math Fireworks.

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mathani:
Starfish regrows a lost arm. Moon jelly does not, instead it redistributes the remaining arms evenly around the body. Only a symmetric jellyfish moves and feeds successfully. I wonder how far can this go. Not that I have any desire chopping off limbs. Can the jelly thrive with five of its eight arms removed? (More at National Geographic.)

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Jean Sibelius y el Cubo de RubikHace dos días fui a un concierto de la OFUNAM. La atracción principal era el Concierto para piano no. 4 de Beethoven, con un brillante joven pianista chino, Haochen Zhang, pero tuve el agradable añadido de apreciar la Segunda sinfonía de Jean Sibelius, quien este año cumple los 150 años de nacido. Me topé en el programa de mano con un excepcional texto sobre dicha obra de Sibelius y el cubo de Rubik, de Roberto Ruiz Guadalajara, y lo reproduzco completo a […]

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12:00 PM | Grande Disco

Il Grande Disco by Arnaldo Pomodoro, Bank of America Plaza, Charlotte, North Carolina.
Photos by I. Peterson

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7:30 AM | Some More Examples of Sequence Numbers

10/06/2015 Examples of Sequence Numbers: Combinatorial Functions C (n,2): The
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Στις κατασκότεινες
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2:23 AM | The Hot Hand Is Real?! Understanding A Controversial Statistics Paper – Game Theory Tuesdays

Probability and statistics rarely get this kind of attention. But this story is special. It’s about debunking a long-held statistics result that itself was about debunking sports lore. There are many angry comments on this WSJ article in regards to a draft of an unpublished study. I was stunned at first and skeptical since the … Continue reading The Hot Hand Is Real?! Understanding A Controversial Statistics Paper – Game Theory Tuesdays

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6:25 PM | Math at Work Monday Gets Artsy

I’ve been interviewing people about how they use math in the work for at least three years. And that means I have a really nice archive of Q&As with fascinating people. And in looking at these interviews, I see that they fall into several categories. So over the next few months, I’ll roll out archives […]

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6:00 PM | Give us a SIGN

Just recently, in one of my tutorials I had to explain the “<,>” signs to a nine year old adorable person and I started thinking about the history of these signs. In a second I realized my mind went completely blind on this topic… Not Acceptable!! Thus I started looking for information. Although many of […]

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12:00 PM | Austin Lights

The pure geometry of street lights in Austin, Texas.
For more on Austin lights, see "Light Rings."
Photos by I. Peterson

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11:15 AM | S7.232 - Calc U l8r

Quinn may have the right idea, given this article from last Monday:Your Old Graphing Calculator Still Costs a Fortune(Also, Happy World Teachers' Day!)<<FIRST<LAST WKINDEXNEXT WK>END>>PARA: So decimals aren't the problem, it's more humans relying on them?QUINN: I know! We can fight calculators!CUBI: Can calculators hold swords?QT: Perhaps we should talk to other relations?QT: After all, Para, we're all polynomials here.PARA: Yeah! Expona and I can go ask around!QT: I'm... free
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di diffusione della scienza e rivoluzioni cc @aubreymcfato @CristianCantoro Utilizzare i dati sulle citazioni in Wikipedia per misurare la diffusione dell'open accessScrivevo all'inizio del 2011 per i festeggiamenti del wiki-decennale di una rivoluzione irreversibile. E' stato piuttosto interessante leggere il titolo che technology review ha utilizzato per raccontare dell'ultimo degli articoli dedicati all'enciclopedia libera: Why Wikipedia + Open Access = Revolution.L'idea degli autori, Misha
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Nielsen, F. (2007). Scientific citations in Wikipedia, First Monday, 12 (8) DOI: 10.5210/fm.v12i8.1997

Heather Ford, Shilad Sen, David R. Musicant & Nathaniel Miller (2013). Getting to the source: where does Wikipedia get its information from?, Proceedings of the 9th International Symposium on Open Collaboration, DOI: 10.1145/2491055.2491064

Misha Teplitskiy, Grace Lu & Eamon Duede (2015). Amplifying the Impact of Open Access: Wikipedia and the Diffusion of Science, Wikipedia Workshop at 9th International Conference on Web and Social Media (ICWSM), arXiv: 1506.07608v1

Citation

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After (or before?) @StartsWithABang's balloon animals' post? A couple of week ago Ethan Siegel published a post about ballon animals, so I decide to repost an old piece that I wrote in 2011 for my italian blog: the english version is lost, but it is magically reposted here! Two one-balloon constructions and their associated graphsI recently discovered this interesting site, vihart. In the site there are some interesting paper and today I want to write something about Computational Balloon
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Demaine E.D., Demaine M.L. & Hart V. (2008). Computational balloon twisting: The theory of balloon polyhedra., Proceedings of the 20th Canadian Conference on Computational Geometry (CCCG2008), 139-142.

Bryś K. & Lonc Z. (2009). Polynomial cases of graph decomposition: A complete solution of Holyer's problem, Discrete Mathematics, 309 (6) 1294-1326. DOI: 10.1016/j.disc.2008.01.054

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Supponiamo di doverci confrontare con un animale, ad esempio un cane o un lupo (o più in generale con un animale, addomesticato o selvaggio). Secondo Konrad Lorenz il comportamento aggressivo di un cane viene influenzato da due stati d'animo differenti: l'ira e la paura.Si può allora provare a prevedere il comportamento del cane in funzione di quale dei due stati domina: nel caso in cui l'animale è dominato da paura o da ira, proporre una previsione è abbastanza semplice; nel caso in cui il […]

Zeeman E.C. (1976). Catastrophe Theory, Scientific American, 234 65-83. DOI: 10.1038/scientificamerican0476-65

Jean Petitot (2013). Complexity and self-organization in Turing, The Legacy of A.M. Turing, (E. Agazzi, ed.), Franco Angeli, Milano, 149-182. arXiv: 1502.05328v1

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Non prevedevo di scrivere la versione italiana di un post sull'ultima news proveniente dal RHIC, ma mi è stato gentilmente chiesto, e provvedo ben volentieri. Inizio, però, con un piccolo cappello, alla fine del quale saprete che c'è anche un piccolissimo pezzetto (il doppio diminutivo è perché i firmatari del papero su arXiv sono veramente tanti) d'Italia in questa interessante scoperta.Tutto nasce da un post, nel flusso twittero, di Annalisa Arci, in cui racconta, in maniera e con un […]

Belavina A.A., Polyakova A.M., Schwartza A.S. & Tyupkina Y.S. (1975). Pseudoparticle solutions of the Yang-Mills equations, Physics Letters B, 59 (1) 85-87. DOI: 10.1016/0370-2693(75)90163-X

Hooft G.'. (1976). Symmetry Breaking through Bell-Jackiw Anomalies, Physical Review Letters, 37 (8) DOI: 10.1103/PhysRevLett.37.8

Hooft G.'. (1976). Computation of the quantum effects due to a four-dimensional pseudoparticle, Physical Review D, 14 DOI: 10.1103/PhysRevD.14.3432

Fukushima K., Kharzeev D.E. & Warringa H.J. (2008). The Chiral Magnetic Effect, Physics Review D, 78 (7) DOI: 10.1103/PhysRevD.78.074033

Kharzeev D.E. & Yee H.U. (2011). Chiral Magnetic Wave, Physical Review D, 83 DOI: 10.1103/PhysRevD.83.085007

STAR Collaboration (2015). Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions, arXiv, arXiv: 1504.02175v2

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A new clue about the #quarkgluonplasma from @RHIC_STAR at @BrookhavenLabWithin the particles that constitute atomic nuclei, protons and neutrons, there are the quarks, the elementary particles with fractional charges, linked to each other thanks to the gluons, bosons that carry the nuclear interaction. Thanks to the gluons it is impossible to observe, at present, free quarks, but it is expected that in the very first stage of the universe, matter was in a state called quark-gluon plasma. Thanks […]

Belavina A.A., Polyakova A.M., Schwartza A.S. & Tyupkina Y.S. (1975). Pseudoparticle solutions of the Yang-Mills equations, Physics Letters B, 59 (1) 85-87. DOI: 10.1016/0370-2693(75)90163-X

Hooft G.'. (1976). Symmetry Breaking through Bell-Jackiw Anomalies, Physical Review Letters, 37 (8) DOI: 10.1103/PhysRevLett.37.8

Hooft G.'. (1976). Computation of the quantum effects due to a four-dimensional pseudoparticle, Physical Review D, 14 DOI: 10.1103/PhysRevD.14.3432

Fukushima K., Kharzeev D.E. & Warringa H.J. (2008). The Chiral Magnetic Effect, Physics Review D, 78 (7) DOI: 10.1103/PhysRevD.78.074033

Kharzeev D.E. & Yee H.U. (2011). Chiral Magnetic Wave, Physical Review D, 83 DOI: 10.1103/PhysRevD.83.085007

STAR Collaboration (2015). Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions, arXiv: 1504.02175v2

Citation

MathFour tweeted: @MathFour

2015-10-09 10:14:13

freakonometrics tweeted: @freakonometrics

"New York City's Trendiest Game" https://t.co/dFMM37exRQ ht @alcor74

2015-10-09 10:09:39

ulaulaman tweeted: @ulaulaman

2015-10-09 10:09:11

PeterSmith tweeted: @PeterSmith

Oct. version of my (relatively) Gentle Intro to Category Theory online (new chapters on functors). http://t.co/GpKgjrc7jC Spread the word!

2015-10-09 09:18:20

ulaulaman tweeted: @ulaulaman

The 2015 Peace #NobelPrize is awarded to the National Dialogue Quartet in Tunisia http://t.co/tPLXqyo1tD via @NobelPrize

2015-10-09 09:02:13

christianp tweeted: @christianp

First line in an advert: "we all wish the magic of Christmas could start earlier." Got to disagree with your premise there.

2015-10-09 08:58:23

ndroock1 tweeted: @ndroock1

"Go to the roots, of these calculations! Group the operations. Classify them..." E. Galois ( discovered Group Theory ), preface final paper.

2015-10-09 08:03:46

PeterSmith tweeted: @PeterSmith

Cambridge alarmingly full of freshers who haven't been on a bike since aged 11 ...

2015-10-09 07:50:28

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