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jpedmaths:Angles in the same segment are equal.

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4:00 PM | August in Blogging U: Blogging 101

Our popular get-started course, Blogging 101, returns in August! Learn more and register.

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5:00 AM | The Future of Metric?

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.Imagine being base 10 in a base 2 world. Come back often for more funny math and geeky comics.

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Welcome to this month’s “game theory in the news” post that helps students, teachers, and everyone connect game theory with current events. This month’s most popular story featured an exam question that went viral. Unfortunately the media coverage was horrible, and even the professor who asked the question slightly misinterpreted the incentives of the game. … Continue reading Viral Exam Question, Killer Robots, And Greece- Game Theory News

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If you can manage to choose u and v such that u = v =x, then the answer is just (½)x^2, which is easy to remember. Oh, and add a ’+C’ or you’ll get yelled at. [xkcd]

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John Horton Conway: the world’s most charismatic mathematician

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6:55 PM | Brain-O Quiz Answers

7/27/2015 Answers to Last Fridays Brain-O Quiz: 1. He is a liar. 190
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“Mathematics is a place where you can do things which you can’t do in the real world.” -...

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Ah, the perils of having a mathematically inclined significant other. The Fourier Transform

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How can you tell if a number is divisible by 7? Follow the arrows in this graph! Here’s how it works. Place your finger on the circle labeled “Yes.” Then move a number of black arrows equal to the first digit (leftmost) of the number. Then move one green arrow to get to the next … Continue reading Divisibility By 7 Test Using A Graph. Why Does It Work? Sunday Puzzle

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11:00 AM | Noise Riddle

For Sunday reflection:
"There is an old riddle that vividly
demonstrates just how noise can interfere with thinking, even when that
noise is information. Imagine you are a bus driver. At the first stop of
the day, nine passengers get on your bus. At the second stop, two
people get off. At the third stop, four people get off, but three new
people get on. What color are the bus driver's eyes

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7/26/2015You may have read or heard that I refer to myself as a "Mathematologist". Mathematology is the study of all things mathematical including: mathematics, history of mathematics, study of mathematicians, mathematical poetry, mathematics and religion, mathematics and psychology, math music, mathematical recreations, mathematical humor, etc.So I wanted to include a book by Robin J. Wilson titled "Stamping Through Mathematics" - a book about stamps that honor the history of […]

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fouriestseries:
Wave Equation
The wave equation is a partial differential equation that describes the propagation of various types of waves.
The equation appears throughout many fields in physics, including acoustics, fluid dynamics, electromagnetism, and quantum mechanics. With some modifications, it can even describe the spread of traffic jams on busy highways!
The one-dimensional equation was first discovered by d’Alembert in 1746 as he studied how vibrations propagated through a
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images-of-math:
With a few mirrors, you can make a pattern go on forever.

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En Février 1994, Mary Tai, chercheuse dans le domaine médical, publia un article de recherche intitulé A mathematical model for the determination of total area under glucose tolerance and other metabolic curves. ce qui peut se traduire par: Un modèle … Continuer la lecture →

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6:33 PM | 3rd Week at PCMI

One week later for this post, but I had some work this week because we are moving flats. But it was great fun ^_^ Anyway, let’s get back to the last week at PCMI (2nd week, 1st week): 14th day (Saturday 11th July): It’s weekend and I was completely relaxed. Don’t expect many things happening… Just […]

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Τελευταία ανάρτηση για το καλοκαίρι. Ένα φυλλάδιο για την ενότητα της συνέχειας στα μαθηματικά Γ Λυκείου.

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10:28 AM | The Singular Mind of Terry Tao

The Singular Mind of Terry Tao: Great article on the preeminent mathematician of our time, Terry...

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7:30 AM | An "Unholey" Magic Square

7/25/2015An "Unholey" Magic Square is a take off of "Unholey Primes": primes which only use digits that do not have "holes" in them: 1, 2, 3, 5, and 7. In this one I used only the digits 1, 2, and 3 because there are 81 ways to write 4 digit numbers using only 3 different digits, and as I mentioned before a 9 x 9 Magic Square has 81 block to fill.An Order 9 "Unholey" Magic Square:
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5:00 AM | Off the Grid

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.Bet you never knew how easy it is to get off the grid. Just go to the edge and jump off. But, seriously, there will be a gap in comics for a while. As well as a gap in the usual places where I post updates. I'll be away and I don't know what access I'll have nor what (computer) tools I'll have available. And no one else knows how I operate any of the websites to run them in my absence. Be back in a couple of
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2:46 AM | Sample Page

This is an example page. It’s different from a blog post because it will stay in one place and will show up in your site navigation (in most themes). Most people start with an About page that introduces them to … Continue reading →

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2:46 AM | Hello world!

Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!

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The Naked Scientists Podcast has released an episode on the Clay Millennium Prize Problems, titled ‘The Seven Million Dollar Maths Mystery’. The episode description is: This week, we’re investigating the Millennium Prize Problems – a set of mathematical equations that, if solved, will not only nab the lucky winner a million, but also revolutionise the... Read more »

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This is the third post in my new series that seeks to share the best mathematical content on the web. 1. Why are cicadas so good at math? Why might cicadas emerge in cycles of years that are prime numbers? PBS Digital Studios It’s Okay To Be Smart, by Joe Hanson, explains a bit about … Continue reading This Week In Math #3: Why cicadas are good at math, the red square puzzle, and understanding the monster group

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No summary available for this post.

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12:30 PM | 7/24/15

7 - 2 - 4 = 1^5Also:7 + 2 - 4 = 1 * 5Also:7, 2+4, 1*5 is an arithmetic sequence with a=7, d= -1Also:7 = (2 * 4) - 1^5

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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

gaussianos tweeted: @gaussianos

Nicolas Bourbaki: los tentáculos del "matemático" - #AntologíaGaussiana http://t.co/E10M0KcnJw

2015-07-29 10:59:55

christianp tweeted: @christianp

Dentist appointment at midday. Dentist is running 20 minutes late. Haven't eaten anything so my breath doesn't stink. So hungry.

2015-07-29 10:57:47

ulaulaman tweeted: @ulaulaman

#scritturebrevi RT @Popinga1: Newton fu uno dei padri del calcolo integrale: una grande conquista, anche se con molti limiti.

2015-07-29 10:43:59

PeterSmith tweeted: @PeterSmith

Let's face it — most of the coffee served up by cool coffee bars from "artisan urban roasters" is terrible if you don't drown it in milk.

2015-07-29 10:28:41

michiexile tweeted: @michiexile

Try this one insane trick to reduce your race riots:
Have the police stop killing black citizens.
#SandraBlack #SamDubose #TooManyOthers

2015-07-29 10:15:10

mathfour tweeted: @mathfour

LIVE on #Periscope: TI-30 Calculator VINTAGE from 1976 #KnickKnackYack in the #MathShack https://t.co/NGY831vceF

2015-07-29 10:13:20

MindAfterMath tweeted: @MindAfterMath

2015-07-29 10:02:42

peterrowlett tweeted: @peterrowlett

Travels in a Mathematical World Podcast Archive: 63 - Rhys Phillips, Electrostatic hazards in aircraft http://t.co/8tktCbT8aj

2015-07-29 09:54:04

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