Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php2014-07-23T21:57:28-04:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializerContinued:”P-values overstate the evidence against the null”: legit or fallacious?http://www.mathblogging.org/post/935682014-07-23T14:55:37-04:00Deborah MayoSince the comments to my previous post are getting too long, I’m reblogging it here to make more room. I say that the issue raised by J. Berger and Sellke (1987) and Casella and R. Berger (1987) concerns evaluating the evidence in relation to a given hypothesis (using error probabilities). Given the information that this hypothesis H* was randomly […]2014 MAA MathFest Official Posterhttp://www.mathblogging.org/post/935742014-07-23T14:35:43-04:00Mathematical Association of AmericaMathematical Association of America posted a photo:
Check out the poster for this year's MAA MathFest in Portland, Oregon!<br />
<br />
Read more about the Mathematical Association of America's 92nd summer meeting in MAA FOCUS bit.ly/1qMesJi.Driehoek van Pascalhttp://www.mathblogging.org/post/935752014-07-23T14:10:00-04:00Willem van RavensteinHoeveel kortste routes zijn van D naar een van plaatsen met een L? <br /><br />"There’s a lot of room in infinity for shit to get fucked up."http://www.mathblogging.org/post/935732014-07-23T14:08:13-04:00Unknown“There’s a lot of room in infinity for shit to get fucked up.” - Abstract algebra...Editing photos as if they were audio fileshttp://www.mathblogging.org/post/935672014-07-23T14:06:02-04:00Nathan YauMasuma Ahuja and Denise Lu for the Washington Post applied a technique called databending to a bunch of photos. The …WKB approximation and the radial equationhttp://www.mathblogging.org/post/935722014-07-23T13:55:58-04:00growescienceReferences: Griffiths, David J. (2005), Introduction to Quantum Mechanics, 2nd Edition; Pearson Education – Problem 8.13. So far, we’ve applied the WKB approximation to one-dimensional potential problems. It might seem that that’s all we can manage since WKB is essentially a way of approximating the solution of a one-dimensional ODE. However, we can use it […]Sistemi di grado superiore al secondohttp://www.mathblogging.org/post/935642014-07-23T13:53:49-04:00Angelo StellaSistemi di grado superiore al secondo. Esercizi vari © 2014, Angelo Stella. All rights reserved.
Continuità di una funzionehttp://www.mathblogging.org/post/935652014-07-23T13:51:11-04:00Angelo StellaContinuità di una funzione. Esercizi svolti © 2014, Angelo Stella. All rights reserved.
The mathemagician's roomhttp://www.mathblogging.org/post/935662014-07-23T13:42:00-04:00Vlad AlexeevThe mathemagician's room
by Dywiann Xyara (Abstract-scientist)
http://im-possible.info/english/art/pencil/dywiann-xyara.html
Author - http://abstract-scientist.deviantart.com/
Cardiology researcher who admitted to fraud earns four-year funding banhttp://www.mathblogging.org/post/935712014-07-23T13:33:17-04:00Ivan OranskyA researcher who admitted in 2012 to “intentional and systematic manipulation” of data and had two papers retracted has been banned from funding by the German Research Foundation (DFG). Dennis Rottländer, who will also be returning prize money he was awarded for the research, worked in Uta C. Hoppe’s lab at the University of Cologne. […]This is the way the world ends. . .http://www.mathblogging.org/post/935632014-07-23T13:14:47-04:00Jon CogburnI've long been obsessed with what it would have been like to be a Saxon in post-Roman Britain. Roman concrete was so good that for hundreds of years Saxons inhabited Roman buildings. But their architectural wherewithal was primitive compared to the Romans, so as the roofs collapsed on the Roman...Unizor - Probability Definition - Equal Chanceshttp://www.mathblogging.org/post/935692014-07-23T13:07:00-04:00Zor Shekhtman<br /><br /><br /><br /><br /><br /><br /><br />Based on the previous philosophical discussion about probability let's attempt to define this concept more rigorously.<br />By now we should understand the concept of an event (like "getting even number on a dice") as a result of a random experiment (like "rolling the dice"). We have also discussed a concept of an elementary event - the "smallest" in some sense result of a random experiment that cannot be represented as a combination of "smaller" events (like "getting 6 on a single dice rolling"). We […]Unizor - Probability Definition - Unequal Chanceshttp://www.mathblogging.org/post/935702014-07-23T13:04:00-04:00Zor ShekhtmanFifty years of CP violationhttp://www.mathblogging.org/post/935582014-07-23T12:20:00-04:00Gianluigi Filippelli via @CERN http://t.co/9Rac42mBVh #CPviolation #CPsymmetry #matter #antimatter The CP violation is a violation of the CP-symmetry, a combination between the charge conjugation symmetry (C) and the parity symmetry (P). CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle, and then its spatial coordinates are inverted.The CP violation is discovered in 1964 by Christenson, Cronin, Fitch, and Turlay (Cronin and Fitch awarded the Nobel […]32310.1103/PhysRevLett.13.138<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.jtitle=Physical+Review+Letters&rfr_id=info%3Asid%2Fresearchblogging.org&rft.atitle=Evidence+for+the+2%CF%80+Decay+of+the+K_%7B2%7D%5E%7B0%7D+Meson&rft.issn=0031-9007&rft.date=1964&rft.volume=13&rft.issue=4&rft.spage=138&rft.epage=140&rft.artnum=http%3A%2F%2Flink.aps.org%2Fdoi%2F10.1103%2FPhysRevLett.13.138&rft_id=info%3Adoi%2F10.1103%2FPhysRevLett.13.138&rft.au=Christenson%2C+J.&rft.au=Cronin%2C+J.&rft.au=Fitch%2C+V.&rft.au=Turlay%2C+R.&rfs_dat=ss.included=1&rfe_dat=bpr3.included=1">Christenson, J., Cronin, J., Fitch, V. & Turlay, R. (1964). Evidence for the 2π Decay of the K_{2}^{0} Meson, <span style="font-style:italic;">Physical Review Letters, 13</span> (4) 138-140. DOI: <a rel="author" href="http://dx.doi.org/10.1103%2FPhysRevLett.13.138">10.1103/PhysRevLett.13.138</a></span>What’s wrong with originality? on PennSound
Poet Tan Lin...http://www.mathblogging.org/post/935502014-07-23T11:54:02-04:00Unknown<br/><br/>What’s wrong with originality? on PennSound
Poet Tan Lin in an ambient conversation with Charles Bernstein about originality, boredom, appropriation, ….
Seven Controlled Vocabularies and Obituary 2004. The Joy of Cooking: [AIRPORT NOVEL MUSICAL POEM PAINTING FILM PHOTO HALLUCINATION LANDSCAPE]Lecture: Gödel, Incompleteness & Unprovable Theoremshttp://www.mathblogging.org/post/935622014-07-23T11:52:37-04:00RichardIf you’ve got a spare hour[1] at some stage here is a video of a talk I gave last month on Gödel, Incompleteness & Unprovable Theorems. [1] The joy of the pause button is that the hour doesn’t have to form a single contiguous block.Restaurant Jobs Take Off, Even as Pay for Servers Stallshttp://www.mathblogging.org/post/935612014-07-23T11:50:23-04:00Rani MollaAs states debate the minimum wage, tipped workers are going to be a big part of the conversation. That's because there are more of them than ever, and their pay isn't keeping up.
Patient mix-up sinks prenatal supplement paperhttp://www.mathblogging.org/post/935592014-07-23T11:41:10-04:00Cat FergusonThis one seems like an honest mistake: a paper on dietary supplements during pregnancy has been retracted based on an error in data recording. In the BMC Pregnancy & Childbirth paper, “Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study,” women for whom the researchers had […]Slides: Summer School on Hashing: Theory and Applications, 2014http://www.mathblogging.org/post/935522014-07-23T11:30:00-04:00Igor<br /><br />The webpage of the EADS Summer School on Hashing: Theory and Applications that took place on July 14-17, 2014 at University of Copenhagen, Denmark, now features the slides of the presentation made there:<br /><br />OVERVIEW AND GOAL<br />Hashing is used everywhere in computing and is getting increasingly important with the exploding amount of data. The summer school will provide an in-depth introduction to hashing, both theory and applications. The topics range will from modern theory of hashing,
[…]A Mathematical Eye on Portlandhttp://www.mathblogging.org/post/935442014-07-23T11:27:00-04:00Math TouristMAA MathFest 2014 will be held August 6-9, 2014, in
Portland, Oregon, bringing together more than 1,500 mathematicians. Known for
its riverfront scenery, culinary delights, and cool vibe, the city also has a
lively art and architecture scene. And you can find lots of examples of
embedded mathematics, from the parabolic arcs of the city's fountains to the
geometric intensity of its bridges.Matematica In Egitto Ed In Mesopotamiahttp://www.mathblogging.org/post/935602014-07-23T11:04:00-04:00annarita rubertoLa tavoletta Plimpton 322. Fonte Wikipedia."Matematica In Egitto Ed In Mesopotamia", in inglese "Mathematics in Egypt and Mesopotamia", è un avvincente paper di cui è autrice Annette Imhausen.<br><br>Annette Imhausen, già studiosa di Matematica, Storia della Matematica ed Egittologia, si sta interessando attualmente di storia della matematica pre-greca, di contesti particolari, tecniche e trasmissione della matematica egiziana antica, dalla invenzione della scrittura (circa 3000
</br>
[…]Numeri primi illegalihttp://www.mathblogging.org/post/935492014-07-23T10:55:44-04:00Maurizio CodognoLe leggi che regolano la crittografia sono sempre difficili da far applicare al 100%: ecco un esempio piuttosto divertente.The post Numeri primi illegali appeared first on Il Post.Liquid bits could brim with data in future computershttp://www.mathblogging.org/post/935482014-07-23T10:42:00-04:00UnknownA future form of computing could see information stored on clusters of microscopic particles suspended in liquid<br clear='all'/><br/><br/><br/><br/><br/><br/>Algebra 1 INB Pages - Unit 6 Linear Functionshttp://www.mathblogging.org/post/935422014-07-23T10:15:00-04:00Sarah HaganStill working through my draft folder. And, I happened upon some INB pages that I somehow forgot to post this year. I posted snippets of some of these, but never the entire unit. Don't worry. I'll rectify the situation today! If you're in a hurry, the new, never posted pages, are at the very beginning and towards the middle. As always, files to makes these pages are embedded at the bottom.<br /><br />I present to you: <br />Unit 6: Linear Functions<br /><br />This pic is old. […]After Years of Falling, Highway Deaths Tick Uphttp://www.mathblogging.org/post/935432014-07-23T10:07:01-04:00Jessica SparksThe number of registered vehicles in the U.S. is on the rise, and so are vehicle-related fatalities, according to data from the U.S. Department of Transportation's Federal Highway Administration.
A world without statisticshttp://www.mathblogging.org/post/935462014-07-23T09:49:35-04:00AndrewA reporter asked me for a quote regarding the importance of statistics. But, after thinking about it for a moment, I decided that statistics isn’t so important at all. A world without statistics wouldn’t be much different from the world we have now. What would be missing, in a world without statistics? Science would be […]
The post A world without statistics appeared first on Statistical Modeling, Causal Inference, and Social Science.The Moving Walkway #julychallenge Post 19http://www.mathblogging.org/post/935452014-07-23T09:46:14-04:00Pam WilsonAs I am walking through the airport this morning, it was not crowded and had I been brave, I would have collected some data to enable me to create a nice little work-rate problem. How much time does that moving walkway actually save me? Scenario 1: walk the distance. Scenario 2: ride the distance Scenario […]Zippergons, High Fashion, and Really Big Numbershttp://www.mathblogging.org/post/935472014-07-23T09:39:05-04:00Justin LanierWelcome to this week’s Math Munch! Recently I attended a conference in memory of Bill Thurston. Bill was one of the most imaginative and influential mathematicians of the second half of the twentieth century. He worked with many mathematicians on projects and had many students before he passed away in the fall of 2012 at the age […]When do n and 2n have the same digits?http://www.mathblogging.org/post/935512014-07-23T09:39:00-04:00Mark Dominus[This article was published last month on the math.stackexchange
blog, which seems to have died young,
despite many earnest-sounding promises beforehand from people who
claimed they would contribute material. I am repatriating it here.]
A recent question on math.stackexchange asks for the smallest positive integer for which the number has the same
decimal digits in some other order.
Math geeks may immediately realize that has this property, because it is the first 6 digits of the decimal
[…]A New Proof That the Rationals Are Countablehttp://www.mathblogging.org/post/935782014-07-23T09:34:13-04:00UnknownA New Proof That the Rationals Are Countable