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7:22 AM | Thirteen Ways of Looking at a Parabola

with sincere apologies to Wallace Stevens Continue reading →

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6:00 AM | Warning: Explicit

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.Something about recursion makes make want to shout explicit things!

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centerofmath:The best way to ask any math-lover to prom!!!
I’d do something like this, or write an exquisitely creative Java program that somehow outputs “Prom?”. Well, maybe I would.

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9:53 PM | 1st Conference

I have been saying for a long time that I would tell you what happened to this ‘magic’ conference, and here it is: the resume for my 1st presentation at a conference. First of all Tomorrow Mathematicians of Today Conference is organized by the Institute of Mathematics and its Applications (London) and it took place in York. […]

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8:43 PM | Red Nose Collection

Comic Relief is nearly upon us once more; the extraordinary British charity event that results in the biennial reinvention of the red nose. Every two years you can either fork out for a new ruddy conk or throw caution to the wind and reach down the back of your sofa to find the one from last time. And some peanuts. And something that used to be less slimy.This year, there are nine of the handsome little hooters to choose from.Stripey, Astrosnort, Supernose,Snotty Professor, Nosebot,
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8:28 PM | Normalized Frequency For The Win

Frequency response plots are often shown with normalized frequency on the X-axis. This sometimes confuses people. The normalized frequency is computed by dividing the true frequency by the sample rate. Hence, the sample rate itself has…
Tags: Signal Processing

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For printable game boards, click here.

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7:00 AM | I know 50

Daniel would like you to know that he knows 50 digits of pi. He uses groups of 5: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 This is all he knows and he is going to see how …Read more »

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6:00 AM | Heart and Eyes

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.While a blue heart is kind of bad, blue blood is pretty good. This comic is not meant to insult those with green or brown eyes by their exclusion. However, anyone with a brown heart should seek medical attention immediately.

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I’ve been meaning to post about this for a while now, especially after the 2012 Nobel Prize went to Alvin Roth and Lloyd Shapley for work in matching markets. I have made a video that illustrates the Gale-Shapley algorithm and hopefully introduces many people to this wonderful part of game theory. The Stable Marriage Problem […]

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4:46 PM | Wolfram|Alpha can’t. But CP can!

. @christianp has turned into a one-man plug for the holes in Wolfram Alpha. I’m genuinely impressed. — Colin Beveridge (@icecolbeveridge) February 28, 2015 For a while, I’ve been following this cool Twitter account that tweets questions Wolfram|Alpha can’t answer. The genius of it is that the questions all look like things that you could half-imagine... Read more »

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2:27 PM | The Pi Day of The Century Is Coming!

The 100 year wait is almost over! The Pi Day of the century is fast approaching and Calculus Humor is ready! Be prepared to see flash backs to past Pi Days and new content! [...]

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12:30 PM | Geometry Fun

Just a few past Futility Closet geometry puzzles to get your week rolling:
http://www.futilitycloset.com/2014/11/25/sizing-up/
http://www.futilitycloset.com/2014/10/13/stretch-goals/
http://www.futilitycloset.com/2012/07/21/tall-and-wide/

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6:00 AM | (x, why?) Mini: Septagon

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.I think the only reason Septagon, as in September, isn't used is because then we'd have to use Sexagon for six-sided. This leads to misunderstandings with Sexy Primes, of course. Sadly, there are no Septy Primes

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3:00 AM | Solution to Divide Into 4 Equal Parts

Last week I asked you to divide a trapezoid into 4 equal parts with 4 equal pieces. There’s a neat trick on how you can do this: you can tile the same shape to re-create the original! (Click to see image of solution) It’s a pretty neat trick that can sometimes work in other dissection […]

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3:00 AM | Monday Puzzle: The 15 Puzzle

Sliding block puzzles were a part of my childhood. The puzzle involved moving blocks using the “free space” until you assembled the pieces to re-create a picture. This toy seems pretty boring today, but at one point there was a huge craze about them. In the 1880s, the 15 puzzle was as big as more […]

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maxwellsequations:#tbt I decided last night that this is probably my all-time favorite page of notes of mine because while I’m p sure I got some things wrong, I was on the right track. And, I dunno, it’s got some kind of page of notes “it” factor to me.Early 2013, I was in Honors Calc III, diffy q, Intro Astro II, and I think some gen eds or something. Ha, first A(+/-) in a math class in my entire life was in Honors Calc III with Brodskiy, who rules fwiw. I loved that class so gd much.

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12:55 AM | Give until it hurts

Queen B: Alright girls. Sort your clothes into piles by color so that we can wash them. Ladybug, any clothes you have that are too small for you, you give to the Butterfly. Ladybug: Okay. Queen B: Butterfly, any clothes … Continue reading →

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2:30 PM | Your shoe size can tell your age?

I. Input shoe size II. blah III. blah IV. blah V. blah (Arbitrary number that makes this work, but only for the year 2012) VI. Input age Output is your shoe size and age. If you input someone else’s values, …Read more »

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12:45 PM | Black Swans…

Today's Sunday reflection comes from the "Prologue" to Nassim Taleb's "The Black Swan":
"Before the discovery of Australia, people in the Old World were convinced that all swans were white, an unassailable belief as it seemed completely confirmed by empirical evidence. The sighting of the first black swan might have been an interesting surprise for a few ornithologists… but that is not where

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Math-Frolic Interview #28
"...it's time to slay some ghosts and kill some prejudices. Let's admit that any field of human endeavor worth investigating eventually gets to a level of technicality that becomes challenging, and it's fair to say that many people hit that ceiling earlier in mathematics before they do in other, perhaps more verbal, subjects. But before that level

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thedisinfectedmind:When people say math isn’t coolHey, I made a post discussing this a while ago—one of my most enjoyable question-answering experiences.

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3:23 AM | On An Arithmetical Pursuit - student

Whilst taking our afternoon tea, my fellow students and I occasionally pass the time with some arithmetical pursuit, being a game in which the goal is to be the swiftest to manipulate six randomly chosen integers with addition, subtraction, multiplication and division to hit a randomly chosen target, or at least to land as closely as possible to it, admitting no more than one appearance of each number and no fractions.

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11:54 PM | February Favorites

OMG!!! I cannot believe that in February I have posted just 4 times :( I am so sorry everyone for this inconvenience, but this month was terrible for me. I had extra work to do for university, I have finished my dissertation project, I participated at Tomorrow’s Mathematicians Today Conference, and my time-table is horror. But, […]

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Stupiti che 1 non sia primo? Scopriamo insieme perché è "solo" l'unità!Abbiamo già visto come, partendo dai numeri primi, si possa sviluppare un discorso più o meno approfondito sulle fondamenta matematiche. Altrettanto fondamentale, però, si rivela provare a rispondere alla domanda su quale sia il numero primo più piccolo. E', infatti, abbastanza noto come il numero 1 sia stato ora inserito ora escluso dalla lista dei numeri primi, ottenendo in alcuni casi lo status di più piccolo tra […]

Agargun A.G. & Fletcher C.R. (1997). The Fundamental Theorem of Arithmetic Dissected, The Mathematical Gazette, 81 (490) 53-57. DOI: http://dx.doi.org/10.2307/3618768

Crandall R. & Pomerance C.B. (2005). Primes!, Prime Numbers, Prime numbers: a computational perspective 1-82. DOI: http://dx.doi.org/10.1007/0-387-28979-8_1

Caldwell C.K. & Xiong Y. (2012). What is the smallest prime?, Journal of Integer Sequences, 15 arXiv: 1209.2007v2

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Winifred Edgerton Merrill fu la prima americana ad ottenere un dottorato in matematica presso la Columbia University nel 1886. Nella sua tesi sviluppò una rappresentazione geometrica degli infinitesimi in diversi sistemi di coordinate, utilizzando lo jacobiano per per derivare le trasformazioni tra gli integrali nei diversi sistemi.Tra matematica e astronomiaNata a Ripon, nel Wisconsin, il 24 settembre del 1862 da Emmet e Clara Edgerton, si trasferisce con la famiglia a New York intorno al […]

Kelly S.E. & Rozner S.A. (2012). Winifred Edgerton Merrill: "She Opened the Door", Notices of the American Mathematical Society, 59 (04) 504-512. DOI: http://dx.doi.org/10.1090/noti818

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Winifred Edgerton Merrill fu la prima americana ad ottenere un dottorato in matematica presso la Columbia University nel 1886. Nella sua tesi sviluppò una rappresentazione geometrica degli infinitesimi in diversi sistemi di coordinate, utilizzando lo jacobiano per per derivare le trasformazioni tra gli integrali nei diversi sistemi.Tra matematica e astronomiaNata a Ripon, nel Wisconsin, il 24 settembre del 1862 da Emmet e Clara Edgerton, si trasferisce con la famiglia a New York intorno al […]

Kelly S.E. & Rozner S.A. (2012). Winifred Edgerton Merrill: "She Opened the Door", Notices of the American Mathematical Society, 59 (04) 504-512. DOI: http://dx.doi.org/10.1090/noti818

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Direi che oggi pomeriggio è stato un bel respirare, al Palazzo Brera. Cristina Lazzeroni dell'Università di Birmingham è venuta alle 18 (come avevo scritto nel post precedente) per raccontare del bosone di Higgs, del modello standard e di materia e antimateria. E' una sperimentale presso l'esperimento LHCb al CERN, l'esperimento dedicato proprio alla ricerca su uno dei grandi misteri dell'universo: perché in esso c'è un eccesso di materia (e d'altra parte se non fosse così, non ci sarebbe […]

Aaij R., B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander & S. Ali & (2013). First Observation of CP Violation in the Decays of B_{s}^{0} Mesons, Physical Review Letters, 110 (22) DOI: http://dx.doi.org/10.1103/physrevlett.110.221601

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Per i I cieli di Brera, il 24 settembre (domani... scusate per il ritardo nell'annuncio...) alle 18 presso la Sala delle Adunanze dell'Istituto Lombardo nel Palazzo Brera sito in via Brera 28 (Milano), si terrà la conferenza La fisica delle particelle e il Large Hadron Collider: recenti sviluppi e questioni aperte: Cristina Lazzeroni ci introdurrà alla fisica delle particelle e agli studi fatti al Large Hadron Collider del Cern di Ginevra mettendo l’accento su recenti sviluppi come la
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Aad G., J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, S. H. Abidi, M. Abolins, O. S. AbouZeid & H. Abramowicz & (2014). Measurement of the Higgs boson mass from the $H\to \gamma \gamma $ and $H\to Z{Z}^{*}\to 4\ell $ channels in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector, Physical Review D, 90 (5) DOI: http://dx.doi.org/10.1103/physrevd.90.052004

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fawnpnguyen tweeted: @fawnpnguyen

@cheesemonkeysf @gwaddellnvhs @misscalcul8 Note to self: next compliment you get from E, keep on walking. Remember, she's impressed by glue.

2015-03-04 15:43:46

rmathematicus tweeted: @rmathematicus

Your weekly #histSTM links list Whewell's Gazette: Vol: #37 http://t.co/wSOAPFbJb2 – The Gerbil Edition http://t.co/QOUBcuENC5

2015-03-04 15:34:24

pkra tweeted: @pkrautz

@christianp hah! Incredible. cc @mdready

2015-03-04 15:32:51

rmathematicus tweeted: @rmathematicus

2015-03-04 15:32:07

rmathematicus tweeted: @rmathematicus

Look what came in the post today! http://t.co/THitSqSBfl

2015-03-04 15:31:26

christianp tweeted: @christianp

Exported a bibtex citation from sciencedirect. It contains an unescaped ampersand. How has that not been caught? #addedvalue

2015-03-04 15:29:43

rmathematicus tweeted: @rmathematicus

RT @mersenne_tweets: Reminder TONIGHT: Sparrows Can't Sing (1963): You are warmly invited to a special screening of Joan Littlewood... http…

2015-03-04 15:16:00

rmathematicus tweeted: @rmathematicus

RT @mersenne_tweets: Zooniverse project calls on the public to reveal Victorian natural history: This may be of interest to some on... http…

2015-03-04 15:15:30

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