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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 There are many angry comments on this WSJ article in regards to a draft of an unpublished study.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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2:15 AM | GeoGebra or Desmos?

Here is my 3-leafed rose plot in Desmos. Below you will find the same plot in Geogebra. The GeoGebra version, to me, can be presented to students earlier in their math program.

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Operations with Functions:How to add and subtract functions.0:06 Introduction to adding and subtracting functions0:03 Problem 1,add g(x) +j(x)1:21 Solution to problem 1 (Adding functions)1:36 Problem 2 Subtract functions j(x) -g(x)3:07 Solution to problem 2On MooMooMath we provide helpful Math and Geometry videos to help you figure out how to solve Math problems or review old Math concepts you may need to refresh. If you’re a Math student or teacher, we'd love to have you subscribe and join […]

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1:18 AM | You Don’t Teach

Okay, let’s be clear. I *DO* teach. A lot. But students don’t often know how to articulate that *how* I’m trying to teach may differ, at times, from some of their past math-class experiences. They might not know exactly how … Continue reading →

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12:14 AM | Kahoot !

Pas de télévoteurs dans votre école ?Pas de budget pour Dyknow ?Pas de patanteux pour vous bidouiller un système de réponses ?Qu'à cela ne tienne, vos étudiants ont sans doute des cellulaires et/ou votre école un réseau wifi.Kahoot! permet de contourner le problème.L'application vous permet de créer un quiz, un sondage ou même une discussion.Vous dites la phrase magique :"Prenez vos cellulaires."Les étudiants entre le NIP du questionnaire et c'est parti !Vous voulez vérifier la […]

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11:37 PM | Postdoc position at ANU

We’ve just put up an ad for a new 2 year postdoctoral position at the ANU, to work with myself and Tony Licata. We’re looking for someone who’s interested in operator algebras, quantum topology, and/or representation theory, to collaborate with us on Australian Research Council funded projects. The ad hasn’t yet been crossposted to MathJobs, […]

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11:21 PM | The Basics of Direct Proportion

A car travels at 40 kilometers per hour traveled for 7 hours. The table of the distances traveled with respect to time is shown below. Observe the relationship between the distance traveled and the time. As the time increases, the distance traveled increases. If the number of hours increases two times, then the distance also […]
Math and Multimedia - School math, multimedia, and technology tutorials.

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11:11 PM | Making It Stick…With Beanbags

The book Making It Stick – the Science of Succesful Learning has caused me to consider how I approach practice and assessment in my math classroom. The section “Mix Up Your Practice”, in particular, provides ideas for considering why spaced practice, … Continue reading →

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11:07 PM | Constantly Learning and Growing

This year our district has adopted new math programs at all levels. At the elementary level we have adopted Bridges, from The Math Learning Center. It is an inquiry based program, encouraging students to think deeply about mathematics, numbers and their relationships. We changed to this program from enVision, which teachers were constantly saying they disliked […]

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11:00 PM | On This Day in Math - October 6

[after proving Euler's formula e π i + 1 = 0 in a lecture]Gentlemen, that is surely true, it is absolutely paradoxical; we cannot understand it, and we don't know what it means. But we have proved it, and therefore we know it is the truth.~Benjamin PeirceThe 279th day of the year; Every positive integer is the sum of at most 279 eighth powers. See Waring's problem279 = 3^2 + 3^3 + 3^5 (powers are consecutive primes). *Derek Orr For more fun with daily calendar math see Dereks Daily Math and
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10:44 PM | Strike One for the PI

Sara’s post last week about applying for grants hit me right in the middle of, of course, applying for a grant. I found Sara’s tips very useful and loved the advice from the Chronicle on how not to get a … Continue reading →

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10:23 PM | [DMANET] CALL FOR PARTICIPATION: WINE 2015 - The 11th Conference on Web and Internet Economics

CALL FOR PARTICIPATIONWINE 2015: The 11th Conference on Web and Internet EconomicsCentrum Wiskunde & Informatica (CWI), Amsterdam, The NetherlandsDecember 9-12, 2015, with tutorial program on December 9, 2015http://event.cwi.nl/wine2015 <http://event.cwi.nl/wine2015>---------------------------------------------------------------------------------------------------------------------------Registration is now
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“Recently, El Moselhy et al. proposed a method to construct a map that pushed forward the prior measure to the posterior measure, casting Bayesian inference as an optimal transport problem. Namely, the constructed map transforms a random variable distributed according to the prior into another random variable distributed according to the posterior. This approach is […]

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Triality, its action on the 24-cell, and the 'tetrality' description of $\mathfrak{so}(8)$.

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10:00 PM | The Subterfuge of Epsilon and Delta

The epsilon-delta proof, the nemesis of many a calculus student, is an initiation rite into the mysteries of proof writing.
-- Read more on ScientificAmerican.com

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Recall that Kim Davis is the Kentucky clerk who refused to issue marriage licenses for same-sex couples and was cheered on by Mike Huckabee and other Republican candidates for Prez. Had she refused to issue marriage license for couples that had been previously divorced than neither Mike Huckabee would not be supporting her, and the Pope wouldn't have a private 15 minute meeting with her telling her to stay strong (NOTE- I wrote this post in that tiny window of time when it was believed she did […]

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9:33 PM | GeoGebra or Desmos?

Here is my 3-leafed rose plot in Desmos. Below you will find the same plot in Geogebra. The GeoGebra version, to me, can be presented to students earlier in their math program.

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9:25 PM | Trip to the US

Last week I visited a few places in the US. My first stop was Morgantown, West Virginia where my host was Casian Pantea. There I had a lot of discussions with Casian and Carsten Conradi on chemical reaction network theory. This synergized well with the work I have recently been doing preparing a lecture course […]

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9:19 PM | Simons Institute Research Fellowships

The Simons Institute for the Theory of Computing at UC Berkeley invites applications for Research Fellowships for academic year 2016-17. Simons-Berkeley Research Fellowships are an opportunity for outstanding junior scientists (at most 6 years from PhD by Fall 2016) to spend one or both semesters at the Institute in connection with one or more of […]

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I just glanced at my 4th graders homework – they are learning subtraction. I noticed that he was borrowing, which isn’t they way he usually does subtraction. That’s fine. the conversation went like this: Me: Oh, you learned about borrowing? him: yup. Me: Do you like it better than your way of subtracting? him: They…

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8:57 PM | Too young to decide?

“Sir, I’m not even allowed to buy a bottle of wine to have with my dinner. How am I supposed to choose what I want to do for the rest of my life?” A year 13 pupil in my home team (tutor group) asked me that today while discussing her UCAS choices and it stopped […]

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تصحيح تمرين 4 حول الحساب العددي للاولى باك علوم رياضية x و y عددان حقيقيان موجبان، وa عدد حقيقي بحيث a=x+y بين أن : sqrt(4 x+1)+sqrt(4y+1)<=2(a+1)مبادئ حول المنطق ◄المجموعات والتطبيقات خاص بالأولى باك علوم رياضية ◄التعداد خاص بالعلوم رياضية ◄الحسابيات في Z خاص بالعلوم رياضيةتصحيح
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8:39 PM | Playing with jigsaws is the way forward

This is a guest post written by my brother Andy (@andycav_25). Andy is a primary teacher in West Yorkshire and currently teachers Year 5. Fractions Jigsaw from NRICH In the 2014 Primary National Curriculum, there’s much more emphasis on problem solving in maths. Henceforth, we’ve had a few staff meetings and twilights on this recently. […]

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Let and suppose is a triangle such that there exists a point which satisfies , , . What is the relative position of with respect to the triangle such that a) The area is maximized; b) The perimeter is maximized. This was inspired by this answer on Math Overflow. Solution: It is clear that in […]

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Una Cadena de Markov en tiempo discreto consiste en una clase particular de un proceso estocástico donde se verifica el cumplimiento de la propiedad markoviana (en términos simples establece que el futuro es independiente del pasado dado el presente) y la propiedad estacionaria (la probabilidad de transición de un estado i a un estado j […]
La entrada Preguntas Frecuentes de Cadenas de Markov aparece primero en Gestión de Operaciones.

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8:12 PM | Modern

Animation film by Mirai Mizue
http://im-possible.info/english/anim/online-video/youtube-mirai-mizue.html

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7:53 PM | Compressive Imaging in Scanning Transmission Electron Microscopy and Microwave Ghost Imaging

Here are two new hardware randomized acquisition of signals:Development of a fast electromagnetic shutter for compressive sensing imaging in scanning transmission electron microscopy Armand Béché, Bart Goris, Bert Freitag, Jo VerbeeckThe concept of compressive sensing was recently proposed to significantly reduce the electron dose in scanning transmission electron microscopy (STEM) while still maintaining the main features in the image. Here, an experimental setup based on an electromagnetic
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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

Citation

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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

Citation

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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

Citation

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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

rmathematicus tweeted: @rmathematicus

RT @barronmaps: Henry J. Lawrence's "Map showing Isle of Pleasure" [1931]
See our latest blog post:
http://t.co/5944Pvkwk2 http://t.co/wOHu…

2015-10-06 09:48:45

rmathematicus tweeted: @rmathematicus

RT @David_Bressan: George Gaylord Simpson, American paleomammologist, died #OTD in 1984 http://t.co/3U4GoHa7Wk http://t.co/PwYMdDZpO1

2015-10-06 09:48:22

rmathematicus tweeted: @rmathematicus

RT @lizbruton: 1st military aircraft downed by ground-to-air fire: Serbian Army private shot down Austro-Hungarian 'plane w/ cannon 30 Sept…

2015-10-06 09:48:02

rmathematicus tweeted: @rmathematicus

RT @bletchleypark: See The Imitation Game exhibition at #bpark before it closes on November 1. Spread the word!
Go to https://t.co/3dKbCITB…

2015-10-06 09:47:39

ulaulaman tweeted: @ulaulaman

2015-10-06 09:45:28

rmathematicus tweeted: @rmathematicus

RT @mark_carnall: The well worn tropes of natural history. Lets try to break the mold a bit more often? https://t.co/nwW5iYu6dH http://t.co…

2015-10-06 09:43:52

rmathematicus tweeted: @rmathematicus

RT @DrLindseyFitz: Learn all about "The Embalmed Soldiers of the American Civil War" on my blog - http://t.co/vM9u1qjAZZ http://t.co/gvidVA…

2015-10-06 09:40:36

rmathematicus tweeted: @rmathematicus

Jesuit mathematicus & missionary to China Matteo Ricci born 6 Oct 1552 – An Italo-Chinese Jesuit – https://t.co/1WAN8MLdc4 <= Vaults Post

2015-10-06 09:40:22

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