Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php2015-07-29T00:49:31-04:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializergeometricloci:
LOLfontehttp://www.mathblogging.org/post/1252902015-07-28T17:13:28-04:00Unknown<br/><br/>geometricloci:
LOLfonteSafe Spaces at #TMC15http://www.mathblogging.org/post/1252892015-07-28T16:59:50-04:00Megan SchmidtWe talk a lot about creating safe spaces for students, but it’s important to acknowledge that teachers need those safe spaces as well. In many ways Twitter Math Camp IS that safe space where math educators can explore their ideas without judgement and overall be themselves. But I realized this time around that as inviting […]Constructing the Propositional Truncation using Nonrecursive HITshttp://www.mathblogging.org/post/1252882015-07-28T16:43:46-04:00Floris van DoornIn this post, I want to talk about a construction of the propositional truncation of an arbitrary type using only non-recursive HITs. The whole construction is formalized in the new proof assistant Lean, and available on Github. I’ll write another … Continue reading →Inspired by Pink Floydhttp://www.mathblogging.org/post/1252872015-07-28T16:23:00-04:00Vlad AlexeevImage on the wall, which was inspired by covers of albums of Pink Floyd
by design_guns
http://im-possible.info/english/art/misc/street-art/design_guns.html
Author - https://instagram.com/design_guns/
#70 Days Thinking about Day ONEhttp://www.mathblogging.org/post/1252852015-07-28T15:03:00-04:00Beth FergusonI just read a couple of posts about icebreakers here and here. The gist of both posts is that icebreakers can embarrass or at least make students uncomfortable. Both authors suggest activities that are nonthreatening and yet still help students to get to know one another.<br /><br />Here are three activities that I am considering ... I'm thinking I'll do just one of them. <br /><br />Hexagon Design Thinking ... each student will get one pre-cut hexagon. I'll ask them to write a favorite activity on
[…]Tangle diagram crossings and quantum entanglementhttp://www.mathblogging.org/post/1252842015-07-28T14:55:19-04:00dmoskovichIn low dimensional topology we speak of tangles, while quantum physics speaks of entanglement. Similar words, but is there a deeper connection? Kauffman conjectured that the answer is yes (and I think he’s right, although maybe for other reasons). Glancing through arXiv this morning, I came across the following recent preprint: Alagic, G., Jarret M., […]Marathon Editing Brings New Rigor to Wikipedia Physicshttp://www.mathblogging.org/post/1252832015-07-28T14:48:37-04:00John TraceyIn the Simons Foundation’s first Wikipedia edit-a-thon, dozens of physicists spend a morning mass-editing the online encyclopedia.Twitter Math Camp (#TMC15)http://www.mathblogging.org/post/1252792015-07-28T14:00:00-04:00Ihor Charischak
Twitter Math Camp 2015 ended last Friday. Mary Bourassa is one of the organizers and is not afraid that calling this conference a Twitter event will scare away most "reasonable" thinking math educators. Why? Because this may be the best math event anywhere. Just ask any MTBoS member who attended the conference!<br />
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Here's one. Christopher Danielson was a participant, speaker and early blogger of his experience there.<br />
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And another. Meg Craig. Important things you need to know (about TMC15)<br />
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More […]What did I REALLY get out of TMC15?http://www.mathblogging.org/post/1252812015-07-28T13:55:23-04:00LisaI could certainly go on and on about all of the wonderful personal connections that I made and renewed at TMC15. I could talk for a while about how I felt so much gratitude from the community as a whole and so many individual people. However, talking about all of that would diminish all of …Continue readingMy Session. All the Circles. TMC #2http://www.mathblogging.org/post/1252802015-07-28T13:50:03-04:00abrandnewlineMy session started out as one thing in January and became a totally different thing when I presented. I would say my session was in two parts: 1. Building trust in the classroom using circles and 2. restorative justice as we use it at my school. (I’m nearing 1000 words so I’m gonna just write about #1 … Continue reading My Session. All the Circles. TMC #2 →What Gets Conserved at Vertices in Feynman Diagrams?http://www.mathblogging.org/post/1252772015-07-28T12:24:51-04:00edwardfhughesThe simple answer is – everything! If there’s a symmetry in your theory then the associated Noether charge must be conserved at a Feynman vertex. A simple and elegant rule, and one of the great strengths of Feynman’s method. Even better, it’s not hard to see why all charges are conserved at vertices. Remember, every … Continue reading What Gets Conserved at Vertices in Feynman Diagrams? →[DMANET] Combinatorial and Experimental Methods in Commutative Algebra and Related Fieldshttp://www.mathblogging.org/post/1252702015-07-28T12:23:00-04:00Lance FortnowDear colleagues,we are happy to announce that the workshop"Combinatorial and Experimental Methods in Commutative Algebra and <br>Related Fields"will take place at the University of Osnabrück from the 7th to the 10th <br>of October 2015.The deadline for registration is the 17th of August 2015.For more information, please see the conference web page: <br>https://www.algebraworkshop.uni-osnabrueck.de/Sincerely,Richard Sieg (University of</br>
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[…][DMANET] 5th Annual Meeting DFG Prioriy Project "Algorithmic and Experimental Methods in Algebra, Geometry and Number Theory"http://www.mathblogging.org/post/1252712015-07-28T12:21:00-04:00Lance FortnowDear colleagues,the 5th Annual Meeting of the DFG Priority Project SPP 1489"Algorithmic and Experimental Methods in Algebra, Geometry and Number<br>Theory"will take place at the University of Osnabrück from the 28th of<br>September to the 2nd of October 2015.The deadline for registration is the 17th of August 2015.For more information, please see the conference web page:<br>www.spptagung.uos.deSincerely,Richard Sieg (University of</br>
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[…]STEM in the Summer: Hot Three National Parkshttp://www.mathblogging.org/post/1252822015-07-28T12:18:46-04:00ChristinaIn the second installment of our “hot three” STEM in the Summer series, we’re highlighting three national parks that turn the great outdoors into a science laboratory.More than 275 million visitors flock to America’s national parks every year to enjoy the great outdoors and historic landmarks. Did you know that the National Park Service also offers terrific STEM educational programs for young people?Tags:  scienceReseña: “String Theory Demystified” por David McMahonhttp://www.mathblogging.org/post/1252692015-07-28T12:00:26-04:00Francisco R. VillatoroLos libros de la serie DeMYSTiFieD de McGraw-Hill están bastante bien y el de teoría de cuerdas no es una excepción. Un libro para estudiantes de física e ingeniería que acerca la teoría de cuerdas a quien no ha […] Leer más
La entrada Reseña: “String Theory Demystified” por David McMahon fue escrita en La Ciencia de la Mula Francis.
Entradas relacionadas:
Avances en la conjetura de Maldacena sobre la correspondencia AdS/CFT
Los octoniones y
[…]August in Blogging U: Blogging 101http://www.mathblogging.org/post/1252642015-07-28T12:00:00-04:00Michelle W.Our popular get-started course, Blogging 101, returns in August! Learn more and register.This Week’s Hypehttp://www.mathblogging.org/post/1252672015-07-28T11:59:54-04:00woitSymmetry, the FNAL/SLAC run online magazine funded by the DOE, today is running a piece of multiverse mania entitled Is this the only universe?. It’s a rather standard example of the pseudo-scientific hype that has flooded the popular scientific media … Continue reading →ORiginals - Videos About Researchhttp://www.mathblogging.org/post/1252622015-07-28T11:47:00-04:00Paul RubinORiginals is a YouTube channel co-hosted by Dr. Banafsheh Behzad (@banafsheh_b) of CSU Long Beach and my colleague Dr. David Morrison (@drmorr0). They present short (five or six minute) videos featuring researchers describing their research to a general (non-expert) audience. Their tag line is "Outstanding research in everyday language", and I think the first two installments have lived up to that mantra.<br /><br />The first two videos, by Dr. Behzad and the net-biquitous Dr. Laura McLay (@lauramclay) of […]Serial plagiarizer notches three retractionshttp://www.mathblogging.org/post/1252662015-07-28T11:30:02-04:00Shannon PalusThe chips are starting to fall from investigations into the works of Mustapha Marrouchi, a former English professor at the University of Nevada Las Vegas (UNLV) — he’s lost three papers from the journal College Literature. Things began unraveling for Marrouchi last year when an investigation by the Chronicle of Higher Education found lifted material in his books, essays, and peer-reviewed […]
The post Serial plagiarizer notches three retractions appeared first on
[…]The 2016 CS-Econ Job Market Candidateshttp://www.mathblogging.org/post/1252652015-07-28T11:28:21-04:00Jason HartlineThe summer edition of SIGecom Exchanges has a new feature: an article profiling the CS-Econ 2016 junior job market candidates (cf. the call for profiles). The goal of this article is to (a) reduce the information inefficiency of the market and (b) present the candidates as a cohesive community. For best results, use the keyword […][DMANET] ALGO 2015 - Call for participationhttp://www.mathblogging.org/post/1252722015-07-28T11:22:00-04:00Lance Fortnow-------------------------------------------------------------------------------<br> ALGO 2015<br> 14-18 September 2015, Patras, Greece<br> http://algo2015.upatras.gr/ Early Registration Deadline: 31 July 2015<br>-------------------------------------------------------------------------------ALGO is an annual event combining the premier algorithmic conference<br>European Symposium on Algorithms (ESA) along with a number of specialized<br>conferences and</br>
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[…]What do you know about "cosine"?http://www.mathblogging.org/post/1252612015-07-28T11:08:00-04:00David Van LeeuwenTechnology such as Geogebra can give tremendous opportunities to hook students into mathematics if it is introduced as a tool that uses basic mathematics. In the "olden days" one had to have a solid grounding in trig and coordinate geometry to even begin to deal with graphs such as those shown here.Yes, this does use "cosine". I feel that it could be used to create a desire to find out what this thing called "cosine" really is. As a motivator.<br />A number of my blog entries have been geared towards
[…]Iron-age arsonists’ leftovers hint at how Earth’s poles may fliphttp://www.mathblogging.org/post/1252682015-07-28T11:00:00-04:00UnknownMagnetic deposits in char from ancient African villages reveal that Earth's magnetic field had weakened before without flipping<br clear='all'/><br/><br/><br/><br/><br/><br/><br/><br/><br/>Obligatory #TMC15 Recap Thinghttp://www.mathblogging.org/post/1252632015-07-28T11:00:00-04:00Jonathan ClaydonIt has ended. It was excellent. It had kittens.
A recap of some of the events.WednesdayHeaded to the airport at 5am after little to no sleep. All in an attempt to make it to a taping of the Price is Right. We showed up with 5 minutes to spare to what we thought would be a quick day. It's a 40 minute off the cuff show, how long could it take to film? Seven lines and five hours later, I sat in the studio audience. Then there was two hours of clapping
[…]Another ounce of theoryhttp://www.mathblogging.org/post/1252602015-07-28T10:48:00-04:00Mark DominusA few months ago I wrote an article here called an ounce of theory
is worth a pound of search and I
have a nice followup.
When I went looking for that article I couldn't find it, because I
thought it was about how an ounce of search is worth a pound of
theory, and that I was writing a counterexample. I am quite surprised
to discover that that I have several times discussed how a little
theory can replace a lot of searching, and not vice versa, but perhaps
that is because the search is my
[…][DMANET] Postoc Positions at the Hausdorff Center for Mathematics, Bonn Universityhttp://www.mathblogging.org/post/1252732015-07-28T10:15:00-04:00Lance FortnowThe Hausdorff Center for Mathematics (HCM) at Bonn University offers <br>severalPostdoctoral Positionsin all fields of mathematics and quantitative economics. The duration of <br>these positions is up to 2 years. Expected starting date is no later <br>than October 2016. There may be an option of extension by up to one <br>further year, depending on the availability of funding. Generally there <br>are no teaching obligations but such opportunities are provided if <br>desired by the candidates.For details see
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[…]7 Days of Maths http://www.intmath.com #2http://www.mathblogging.org/post/1252582015-07-28T10:02:45-04:00solvemymathsFourier Series Graph Interactive#532 Wharf – A new minimal geometric composition each day.http://www.mathblogging.org/post/1252542015-07-28T10:00:31-04:00Unknown<br/><br/>#532 Wharf – A new minimal geometric composition each day.“We can keep debating this after 11 years, but I’m sure we all have much more pressing things to do (grants? papers? family time? attacking 11-year-old papers by former classmates? guitar practice?)”http://www.mathblogging.org/post/1252592015-07-28T09:48:01-04:00AndrewSomeone pointed me to this discussion by Lior Pachter of a controversial claim in biology. The statistics The statistical content has to do with a biology paper by M. Kellis, B. W. Birren, and E.S. Lander from 2004 that contains the following passage: Strikingly, 95% of cases of accelerated evolution involve only one member of […]
The post “We can keep debating this after 11 years, but I’m sure we all have much more pressing things to do (grants? papers? family time? attacking
[…]Remote access for MathSciNethttp://www.mathblogging.org/post/1252562015-07-28T09:47:26-04:00pbelmansHave you ever encountered the username and password dialog box for MathSciNet whilst accessing it from your home connection? Of course, you could VPN to your institution to gain access, but it is now possible to sidestep this! I was told about this new functionality by Edward Dunne at the AMS Summer Institute in Algebraic […]