Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php20150903T15:04:4604:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializerBlermions, Cyclic Quadrilaterals, and Crossed Chordshttp://www.mathblogging.org/post/12804320150903T07:52:0604:00samjshahLast year in Geometry, the other teacher and I weren’t pleased how we introduced the crossed chord theorem. Basically, we ran out of time to come up with a *great* idea and instead had kids measure some things, take the products, and see that the theorem held true. Not our style. We were doing the […]CSJob: PostDoc, Adaptive antenna processing correcting the decoherence effects induced by the fluctuations of the propagating media, Brest, Brittany, Francehttp://www.mathblogging.org/post/12804120150903T06:16:0004:00Igor Angelique just sent me the following postdoc announcement:<br /> <br />Adaptive antenna processing correcting the decoherence effects induced by the fluctuations of the propagating media Context At the heart of passive acoustics, gain over ambiant noise is the subjet of numerous contributions. Among the various solutions we can think of (e.g., algorithms working at low signaltonoise ratios, amplification of the signal of interest...) the technique consisting of using many
[…]EIKE und die Wunder der Klimawissenschafthttp://www.mathblogging.org/post/12804220150903T06:15:5304:00ThiloEIKE ist ein in Jena ansässiges Institut selbsternannter KlimaExperten, das seine Entdeckungen auf den institutseigenen Webseiten publiziert und es damit wohl auch immer wieder mal in die MainstreamMedien schafft. Ein Leser hat mich auf den letzte Woche erschienenen Artikel “Wunder der Klimawissenschaft Ein Selbstversuch zum Nachmachen” hingewiesen. Da geht es um die folgenden beiden Kurven…Puzzlebomb – September 2015http://www.mathblogging.org/post/12804020150903T06:05:3204:00Katie StecklesPuzzlebomb is a monthly puzzle compendium. Issue 45 of Puzzlebomb, for September 2015, can be found here: Puzzlebomb – Issue 45 – September 2015 The solutions to Issue 45 will be posted at the same time as Issue 46. Previous issues of Puzzlebomb, and their solutions, can be found here.When a Triangle is Acutehttp://www.mathblogging.org/post/12807420150903T05:50:4604:00UnknownA list of conditions for a triangle to be acuteOh fuck, I ate the stalkhttp://www.mathblogging.org/post/12803920150903T05:36:1504:00Ian ShortThat’s what Isabel said after she ate the stalk of a strawberry. Where the fuck does she get that kind of language from?Protegido: Calificaciones de Cálculohttp://www.mathblogging.org/post/12803820150903T04:54:2804:00Miguel LacruzNo hay extracto porque es una entrada protegida.Alive, not alife, look!http://www.mathblogging.org/post/12803720150903T03:54:0704:00chorasimilarityFiled under: Uncategorized Tagged: artificial life, chemlambda, experia, quiner[DMANET] ETAPS 2016 2nd call for papershttp://www.mathblogging.org/post/12808520150903T02:36:0004:00Lance Fortnow****************************************************************** CALL FOR PAPERS: ETAPS 201619th European Joint Conferences on Theory And Practice of Software Eindhoven, The Netherlands, 28 April 2016 http://www.etaps.org/2016****************************************************************** ABOUT ETAPS ETAPS is the primary European forum for academic and industrial<br>researchers working on topics relating to software science. ETAPS,<br>established</br>
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[…]Anomaly Detection in Computer Systems using Compressed Measurementshttp://www.mathblogging.org/post/12803620150903T02:32:0004:00IgorHere is another area of application of compressive measurements and anomaly inference from said measurements in computer systems. Anomaly Detection in Computer Systems using Compressed Measurements by Tingshan Huang, Naga Kandasamy and Harish Sethu.<br /><br />Online performance monitoring of computer systems incurs a variety of costs: the very act of monitoring a system interferes with its performance and if the information is transmitted to a monitoring station for analysis
[…]FOCS 2015 and KARPFest80http://www.mathblogging.org/post/12803420150903T01:57:3704:00Boaz Barak[Forwarding an announcement by Prasad Raghavendra –Boaz] FOCS 2015 will be held at Berkeley, California on October 18–20, 2015. Registrations are open at: http://focs15.simons.berkeley.edu/registration.html The deadline for early registration is Sept 25th. KARPfest80 On Saturday October 17, the day immediately before FOCS 2015, the Simons Institute for the Theory of Computing will host a celebration […]Dans la même veinehttp://www.mathblogging.org/post/12803220150903T01:17:0004:00Missmath<br />Source : 100sens.overblog.comAutomated drawing and optimization of syntax diagramshttp://www.mathblogging.org/post/12802920150903T01:14:5204:00UnknownIf you've ever written a computer program you probably learned a little bit about contextfree grammars, a formal method of describing the syntax of most programming languages that can be turned automatically into code for parsing those languages through the magic of compilercompilers such as yacc. They're used for most other kinds of formal language, too: see for instance the JSON home page, which includes a grammar describing the syntax of datadescription language JSON.<br /><br />Go look again at the […]Dérivation en chaîne humainehttp://www.mathblogging.org/post/12803320150903T01:12:0004:00MissmathMais non ! Vous ne lirez pas ici un autre billet sur l'anxiété de nos pauvres petits coincés dans la chaîne humaine organisée par leurs parents inconscients qui espèrent ainsi soutenir leur école publique. Allons. Un peu de tenue. Tout le monde sait que les enfants doivent être protégés (au fait, jusqu'à quel âge déjà ?) des discussions sur des sujets délicats comme la politique, la religion ou la sexualité. Un peu d'étiquette dans les chaumières, non
[…]4.2.1http://www.mathblogging.org/post/12803020150903T01:00:0004:00Arseniy Akopyan
Figures sans paroles
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Les figures sans parolesFractales, points fixes et coquillageshttp://www.mathblogging.org/post/12803120150903T01:00:0004:00Marie LhuissierTous les mercredis, à la Maison des Mathématiques et de l'Informatique (à Lyon), un exposé de mathématiques ludique, original et détendant. Et parfois, un carnet de route...

La tribune des mathématiciens
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Carnets de routeGuest Blog: Courtney Lundquist of GlaxoSmithKlinehttp://www.mathblogging.org/post/12802720150903T00:24:0504:00ChristinaWhat first sparked your interest in STEM? Tags:  guest blog, science, women & girls10 Lectures and 42 Open Problems in Mathematics of Data Sciencehttp://www.mathblogging.org/post/12802820150903T00:10:4204:00Afonso BandeiraThis upcoming fall, I am teaching a special topics course at the Math Department in MIT, called Topics in Mathematics of Data Science. This will be a mostly selfcontained researchoriented course focusing on the theoretical aspects of algorithms that aim to extract information from data. I have divided the content of the class in ten topics (or “lectures”), … Continue reading 10 Lectures and 42 Open Problems in Mathematics of Data Science →Rethinking Grading: Ch. 1http://www.mathblogging.org/post/12802620150903T00:00:0004:00Elissa Miller<br />Chapter 1: The Culture of Grading<br />Cathy Vatterott<br /><br />But teachers intervenethey teach with the goal of having all students learn. "If the distribution of student learning after teaching resembles a normal bellshaped curve, that, too, shows the degree to which our intervention failed. It made no difference."<br /><br style="backgroundcolor: white; color: #222222; fontfamily: arial, sansserif; fontsize: 12.8000001907349px;" />Belief #1: Good Teachers Give Bad Grades<br />As teachers, we bought into the idea that a bell curve indicated rigor and misinterpreted it to be a rule to follow. We came to believe that of success
[…]HOW TO GET KIDS TO "SPEAK MATH" EARLY IN THE YEAR... BUELLER?http://www.mathblogging.org/post/12802520150902T23:06:0004:00Jamie DuncanSo it's the beginning of the year. I am always very excited to get a new school year started in my first grade classroom, but training new baby ducks on "how to speak math" takes time. The first day of school I gave our first number talk.<br /><br /> <br />I was able to extract a few ideas from students, but for the most part... <br /><br /><br /><br />It made me want to run down to the second grade hallway and collect all of my little math minds from last year, but then I realized it was my fault. I
[…]"Find What You Love; Do More of It"— #MTBoS Edition, a report from the fieldhttp://www.mathblogging.org/post/12802420150902T22:45:0004:00cheesemonkeysfWhile my friend @TrianglemanCSD Christopher Danielson is holding down the fort at the Minnesota State Fair and the Math On A Stick exhibit, I'm in my third full week of school avec students, and I realized I needed to peel off another layer of my persona and take his advice from his keynote address at #TMC15:<br />Find what you love; do more of it.I love storytelling and stories. I come from a family of storytellers, where dinnertime was always a time of sharing stories.<br /><br />I also love history — […]What would you do with this?http://www.mathblogging.org/post/12802220150902T22:01:3604:00abrandnewlineIn continuing my reflection of this teacher partner program I have a question for you or for us I suppose. What is the best why to do this thing? So here’s the clarification: I now have access to quality release time. Meaning I can get a another teacher into my room to teach my class … Continue reading What would you do with this? →For Extra Pointshttp://www.mathblogging.org/post/12802320150902T21:54:5304:00Unknown(… guess what my Extra Points are worth?! …)
((ok, why the heck not: that one is ALSO for Extra Points!))
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Whence Comes This Sequence of Polynomials?
$ 0 $
$ a_1^2 $
$ \frac{5}{2}a_1 a_2 $
$ 3 a_1 a_3 + \frac{3}{2} a_2^2  2 a_1^4 $
Also: What Comes Next?Complicated to Doablehttp://www.mathblogging.org/post/12802120150902T21:28:0704:00Pam WilsonThis was the Visual Pattern for the bell ringer and some of their thoughts… So we ended up with some form of these 3 equations in both classes today… I got tired of writing step # and total blocks so I asked if we could shorten it a bit…so we defined n and x as […]Nearpod! Formative assessment in progress!http://www.mathblogging.org/post/12802020150902T21:21:0004:00Beth FergusonToday our lesson was about solving absolute value equations and inequalities. Instead of giving notes, demonstrating solving, and then giving practice, I prepared sets of problems already worked out. I asked students to study them, to take time to notice was was happening in each problem, to share their noticings, and then work a sample using their ideas.<br /><br />So our first set looked like this:<br /><br />Students shared their "noticings" and outlined the steps they saw. One student wrote: "The […]unproventheorem:
Found these cards. Frowned. Fixed them....http://www.mathblogging.org/post/12801920150902T20:33:3004:00Unknown<br/> <br/><br/> <br/><br/> <br/><br/> <br/>unproventheorem:
Found these cards. Frowned. Fixed them. Smiled. Geekery prevails!A Fawntastic start to the school yearhttp://www.mathblogging.org/post/12801820150902T20:18:3004:00mjlawlerJust like last year, I made it exactly two days into the school year before working through an activity that Fawn Nguyen shared with the boys. Guess the over / under for nest year should be pretty easy to set! Today Fawn tweeted about her new project: The 2nd lesson – Algebraic Thinking – caught…unproventheorem:
Found these cards. Frowned. Fixed them....http://www.mathblogging.org/post/12801720150902T20:00:1204:00Unknown<br/> <br/><br/> <br/><br/> <br/><br/> <br/>unproventheorem:
Found these cards. Frowned. Fixed them. Smiled. Geekery prevails!On This Day in Math  September 3http://www.mathblogging.org/post/12801620150902T19:00:0004:00Pat Ballew<br />If it's just turning the crank it's algebra,<br />but if it's got an idea in it, it's topology.~Solomon Lefschetz<br /><br /><br />The 246th day of the year; 246 is a sphenic (wedge) composite since it is the product of three distinct prime factors, 246 = 2x3x41. (what would be the next sphenic number?)<br /> 246 is also equal to the sum 9C2 + 9C4 + 9C6 (9 choose 2,4,6)<br /><br />246 = 233 + 13 (13th Fibonacci number plus 13) *Derek Orr @Derektionary<br /><br />EVENTS<br />1752 The dates 3 to 13 September did not exist in England in […]reaching transcendence for Gaussian mixtureshttp://www.mathblogging.org/post/12801420150902T18:15:4604:00xi'an“…likelihood inference is in a fundamental way more complicated than the classical method of moments.” Carlos Amendola, Mathias Drton, and Bernd Sturmfels arXived a paper this Friday on “maximum likelihood estimates for Gaussian mixtures are transcendental”. By which they mean that trying to solve the five likelihood equations for a twocomponent Gaussian mixture does not […]