Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php2015-11-25T18:35:29-05:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializerHow to get more girls into STEMhttp://www.mathblogging.org/post/1341642015-11-25T10:39:28-05:00shaunmaguireHey all, I’m back! I’ve been stuck in a black hole for the past couple years. Nobody ever said that doing a PhD in quantum gravity would be easy. Actually, my advisor John Preskill explicitly warned me that it would be exceptionally difficult … Continue reading →Workshop: Influence of Ramanujan in Number Theory at Tezpur Universityhttp://www.mathblogging.org/post/1341612015-11-25T10:31:09-05:00Manjil SaikiaAs a part of the Global Initiative of Academic Networks (GIAN), a workshop on the Influence of Ramanujan in Number Theory will take place at Tezpur University from July 25 to August 6, 2016. The speakers for this workshop will be Prof. Bruce C. Berndt (UIUC), Prof. Nayandeep Deka Baruah (Tezpur) and Dr. Rupam BarmanQuick Itemshttp://www.mathblogging.org/post/1341572015-11-25T10:09:48-05:00woitA few quick items before the holiday: I hear that Luis Alvarez-Gaumé will be the next Director of the Simons Center, starting next Fall, taking over from John Morgan, the founding Director. My understanding is that the hope was to … Continue reading →Anti-Dühring: 1+2+3+4+…http://www.mathblogging.org/post/1341622015-11-25T10:03:21-05:00Harun ŠiljakAnti-Dühring is a book by Friedrich Engels published in 1878. It is a defense of Marxism from Eugen Dühring’s vision of socialism. It contains interesting scientific references as well, which is the reason I am putting a spotlight on it. First of all, it would be polite to explain: why is this series of columnsOrdering Shapes- Open Middle Problemhttp://www.mathblogging.org/post/1341542015-11-25T10:00:29-05:00banderson02Directions: Draw three shapes and order them from smallest to biggest. Draw three more shapes and order them from biggest to smallest. Look at your six shapes and order all of them from biggest to smallest.  Filed under: Measurement and Data, Open Middle Tagged: 1st Grade, ordering, shapesGary McClelland agrees with me that dichotomizing continuous variable is a bad idea. He also thinks my suggestion of dividing a variable into 3 parts is also a mistake.http://www.mathblogging.org/post/1341582015-11-25T09:39:50-05:00AndrewIn response to some of the discussion that inspired yesterday’s post, Gary McClelland writes: I remain convinced that discretizing a continuous variable, especially for multiple regression, is the road to perdition. Here I explain my concerns. First, I don’t buy the motivation that discretized analyses are easier to explain to lay citizens and the press. […]
The post Gary McClelland agrees with me that dichotomizing continuous variable is a bad idea. He also thinks my suggestion
[…](POG)(RYB)http://www.mathblogging.org/post/1341592015-11-25T09:31:19-05:00vlorbikthat 7-space has seven-way symmetry is obvious (rotate the drawing by 2\pi/7—about 51.43\degrees—). but the *three*-way symmetry isn’t so obvious. here it is in its 7-color wonder. we’ve chosen to fix the “Mud” point at the top. we then chose the “secondaries” line {Green, Purple, Orange} and permuted; the “primaries” permute accordingly; voila. ************************************************* a […]Now this is good news: In policy change, JBC will now make retraction notices informativehttp://www.mathblogging.org/post/1341552015-11-25T09:30:48-05:00amarcus41Readers of this blog know that we have had a few stock villains over the years. High on the list has been the Journal of Biological Chemistry (JBC), and we’ve criticized repeatedly the journal’s unwillingness to provide any information about the reasons for retractions. For as long as we’ve been around, the JBC’s stock retraction statement seemed to […]
The post Now this is good news: In policy change, JBC will now make retraction notices informative appeared
[…]3 YEARS AGO (NOVEMBER 2012): MEMORY LANEhttp://www.mathblogging.org/post/1341512015-11-25T09:18:37-05:00MayoMONTHLY MEMORY LANE: 3 years ago: November 2012. I mark in red three posts that seem most apt for general background on key issues in this blog.[1]. Please check out others that didn’t make the “bright red cut”. If you’re interested in the Likelihood Principle, check “Blogging Birnbaum” and “Likelihood Links”. If you think P-values are hard to explain, see how […]Happy 100th birthday, General Relativity!http://www.mathblogging.org/post/1341602015-11-25T09:16:00-05:00Cristi Stoica<br /><br /><br /><br />"La Madre Terra" by Pietro Cascella, made for ICRANet. You can see Einstein's equation, which he translated into the metaphor "marble = wood". My guess is that it symbolizes Einstein's idea that everything (matter, life, not just the earth) emerges from the perfect geometry of spacetime. I took this photo at the Marco Besso Foundation exhibition in Rome, during the XIV-th Marcel Grossman conference.<br /> <br /><br />Breaking news: New York Times spots naked emperor at GOP royal courthttp://www.mathblogging.org/post/1341562015-11-25T09:00:00-05:00Mark[In case you missed the naked emperor thread up until now, click here, here and here.]<br /><br />As mentioned before, the establishment press, as always best represented by the New York Times, is on the horns of a dilemma. The thought of Donald Trump getting the Republican nomination for president is unthinkable for any number of reasons. Unfortunately however, virtually all of Trump's abuses and his most offensive tactics were made possible by years of declining journalistic standards at the very same […]Thanksgiving, 2015http://www.mathblogging.org/post/1341532015-11-25T08:58:00-05:00JoAnne GrowneyThinking toward Thanksgiving Day tomorrow, I am grateful for -- in addition to my children and grandchildren who will gather -- all of the mathematic and poetic voices that help me see our world.<br /> Happy Thanksgiving wishes for all who read here! Interpolation Technique in Analysishttp://www.mathblogging.org/post/1341522015-11-25T08:44:09-05:00mathtuition88Question: Let belong to both and , with . Show that for all . There is a pretty neat trick to do this question, known as the “interpolation technique”. The proof is as follows. For , there exists such that … Continue reading →11/25/15http://www.mathblogging.org/post/1341472015-11-25T08:30:20-05:00Unknown11 - (2 * 5) = 1^5Also:|1 + 1 + 2 - 5| = 1^5Also:11 - 2 - 5 + 1 = 5Mini-Symposium at the 7th European Congress of Mathematicshttp://www.mathblogging.org/post/1341462015-11-25T08:22:02-05:00estsMini-Symposium at the 7ECM jointly organised by DVMLG and ESTS: “Recent results in axiomatic, combinatorial, and descriptive set theory” The 7th European Congress of Mathematics (7ECM) will take place from 18-22 July 2016 in Berlin, Germany: http://7ecm.de. The Deutsche Vereinigung für Mathematische Logik und für Grundlagenforschung der Exakten Wissenschaften (DVMLG) and the European Set Theory Society […]Orange the Worldhttp://www.mathblogging.org/post/1341502015-11-25T08:18:18-05:00xi'anFiled under: Kids, Uncategorized Tagged: International Day for the Elimination of Violence against Women, Orange Day, UNiTE to End Violence against WomenTeach Yourself Logic 2016 — Last call for suggestions!http://www.mathblogging.org/post/1341482015-11-25T08:17:12-05:00Peter SmithAs I’ve noted, it is time to update the much-downloaded Teach Yourself Logic Study Guide for 2016, and I’ve recently made a start working through the current version. So far, the editorial tinkering has been plentiful but minor as far as content is … Continue reading →A moment of cheerhttp://www.mathblogging.org/post/1341492015-11-25T07:54:02-05:00Peter SmithFor ever and a day, the old have bemoaned the state of the world and how it is now all going to the dogs. But it is difficult not to feel that, yes, even here in Europe, things really are … Continue reading →Trees in Misthttp://www.mathblogging.org/post/1341452015-11-25T07:00:00-05:00Math TouristFir trees in mist, Lake Winona, Winona, Minnesota.
Photo by I. PetersonWhat learning math can look like: A challenging problem about runners on a trackhttp://www.mathblogging.org/post/1341442015-11-25T06:55:29-05:00mjlawlerThis problem from the 2012 AMC 10a gave me son a lot of trouble yesterday: Problem #16 from the 2012 AMC 10A You can see from the beginning that he’s really confused about how to even approach it: So, after the introduction to the problem, we move to the whiteboard to begin solving the problem.…Número 6 de Matgazine, revista matemática creada por estudiantes de la UCMhttp://www.mathblogging.org/post/1341432015-11-25T05:30:09-05:00^DiAmOnD^Nuevo curso…y nuevo número de la revista Matgazine, el número 5, sexto número de esta publicación (sí, el sexto, antes de él salieron el número 0, el número 1, el número 2, el número 3, el número 4 y el número 5). Aquí tenéis la portada y la contraportada Y aquí el índice de este […]Ask Uncle Colin: Missing Numbershttp://www.mathblogging.org/post/1341422015-11-25T05:00:00-05:00ColinDear Uncle Colin, My teacher recently challenged me to tackle the missing numbers problem below and I don’t know where to start! It’s driving me to disgust with the whole number system. Crazy Old Numbers, Wacky And Yucky #Edtech and gimmicks won’t help students solve this, but considering the nature of numbers will. #mathchat #mathschat pic.twitter.com/MS6Ay78PDW — Five Triangles (@Five_Triangles) August 11, 2015 Dear CONWAY, That feeling of disgust is a completely normal
[…]From linear to nonlinear payoffs in the double public goods gamehttp://www.mathblogging.org/post/1341402015-11-25T03:45:43-05:00Artem KaznatcheevIf you recall, dear reader, around this time last year, Robert Vander Velde, David Basanta, Jacob Scott and I got excited about the Archetti (2013,2014) approach to modeling non-linear public goods in cancer. We’ve been working on this intermittently for the last year, but aim to focus now that I have settled in here at […]Malas gráficas [Conferencia]http://www.mathblogging.org/post/1341412015-11-25T03:37:32-05:00UnknownIñaki ÚcarHace mucho, mucho tiempo, en una universidad muy lejana, unos rebeldes sin causa se propusieron ofrecer charlas de divulgación mensuales. Las ganas no faltaron, pero el presupuesto escaseaba. Y aquí estamos hoy, anunciando una nueva charla de divulgación.<br /><br />Bueno, tras esta introducción starwarsera, paso a lo importante. Así que oficialmente anuncio que el próximo miércoles 2 de diciembre a las 11:00 horas en la Sala de Grados de la Facultad de Matemáticas de la Universidad de
[…]Thanksgiving flight patternshttp://www.mathblogging.org/post/1341652015-11-25T03:12:16-05:00Nathan YauMillions of Americans will fly home this Thanksgiving weekend. (Based on my morning commute, the holiday already started a couple of days early.) Josh Katz and Quoctrung Bui for the…Tags: flights, New York Times, ThanksgivingComic #41 — It’s Punny (take 4)http://www.mathblogging.org/post/1341392015-11-25T02:53:11-05:00Manan ShahClick the image for a larger versionCylindrical Coordinateshttp://www.mathblogging.org/post/1341362015-11-25T00:50:19-05:00UnknownBut Wait, There’s More!http://www.mathblogging.org/post/1341352015-11-25T00:29:30-05:00Zachary Abel[This is post #23 in a mini-blog-post series for NaBloPoMo 2015. Jump to the first or previous post.] To finish yesterday’s train of thought, how should you proceed if you wanted to make some mirror image Straws Thingys? You you could pull some trickery and print the scaffold in mirror image (do printers make this … Continue reading But Wait, There’s More! →An extreme close-up on heat transferhttp://www.mathblogging.org/post/1341342015-11-24T23:59:59-05:00Jennifer Chu | MIT News OfficeNew formula identifies limits to nanoscale heat transfer, may help optimize devices that convert heat to electricity.What do statisticians do all day?http://www.mathblogging.org/post/1341332015-11-24T22:30:47-05:00Thomas LumleyThe New Zealand Statistical Association is having its annual meeting at the moment in Christchurch. It’s hard for a lot of people to imagine how there could be new research in statistics, so here are some examples from the awards. Maxine Pfannkuch won the Association’s lifetime achievement award, for her work on statistics education. She studies how […]