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# Posts

### October 23, 2014

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How maths helps us understand and fight infectious diseases. Infectious diseases are much on everybody's mind at the moment. Frantic effort is currently going into developing a vaccine for ebola, and in the longer run also a cure. The ebola virus.read more
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It’s Halloween and this is your development. This neighborhood is all yours!  Can you get to all the houses before 8:00 pm? If not, how many houses can you get to? Possible conversation with students: How long will it take…Read more →
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1295 = 5 x 7 x 37.1295 is 5555 in base 6 (A097252).1295 has the representation 64 - 1 (A123865 and A024062). It is a subperfect power (A045542).1295 is the sum of consecutive cubes (A217843).1295 is the difference of two positive fourth powers (A147857).Every run of digits of 1295 in base 4 has length 2 (A033002): 110033.Source: What's Special About This Number

### October 22, 2014

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The PhotoMath App could revolutionize math for students struggling with the subject. Here’s how it works: open the app, take a picture of the math problem, and let the app work its magic. The app shows a step-by-step problem solving approach. Click here to check out the video and read more about MicroBLINK, PhotoMath’s parent...
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A presentation by Mark Green at the AMS Committee on Education meeting, October 2014
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—–Original Message—– From: Peter Lee (MSR) [mailto:petelee@microsoft.com] To: Vadhan, Salil P. Sent: Tuesday, October 21, 2014 6:24 PM Cc: Harry Shum; Jeannette Wing Dear Salil, SIGACT Community, and Colleagues: Thank you for your letter. We are grateful for the obvious thought and care you have put into expressing the concerns of the research community. It […]
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Solution at the bottom of this page.Like this problem? Try our Contest Problem Book series!Exercise your mind daily with a problem from the AMC-8, AMC-10, or AMC-12, provided by Mathematical Association of America's American Mathematics Competitions.
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Marianne Freiberger An impossible equation, two tragic heroes and the mathematical study of symmetry Nils Henrik Abel.read more
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8123 is a prime number.8123 is a prime that can be written as a sum of 13 consecutive primes (A127341).8123 is a prime p such that q - p = 24, where q is the next prime after p (A098974).8123 represented in base 4 has 2 2s and 4 3s (A045147): 1332323.8123 is a prime with an equal number of 0s, 1s, and 2s in its base three representation (A174976): 102010212.8123 is a prime, as is 812318123281233812348123581236812378123881239 (A244271).Source: OEIS
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Au XVIe siècle, deux professeurs du Gymnasium de Strasbourg proposent la traduction en termes de syllogismes des démonstrations de propositions géométriques. Nous en donnons deux exemples et nous replaçons cette entreprise singulière dans l'enseignement des mathématiques à cette époque. - Histoire des Mathématiques / Piste bleue, featured
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=========================================================== Position at IBM Research: Research Staff Member (in Mathematical Programming) =========================================================== IBM Research is seeking a Research Staff Member to work with the Mathematical Programming group in the Business Solutions and Mathematical Sciences Department. The ideal candidate should possess a strong publication record and be willing and able to apply theoretical ideas to industrial […]

### October 21, 2014

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Aalto University and the University of Helsinki are looking for a provenleader to be the next Director of Helsinki Institute for InformationTechnology HIIT.The new leader will create and execute an ambitious research agenda inan institute conducting basic and applied research in ICT. With almost300 multidisciplinary researchers, a budget of EUR 10 million andpartnerships with global ICT corporations and major researchinstitutions, the Director has an opportunity to contribute to ICTresearch […]
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Dear colleagues, Following the recent successful "Workshop on Mathematical Models and Methods for Energy Optimization (CWM^3EO)" http://www.math.bme.hu/CostWG2014 of the EU COST-Action TD1207 on "Mathematical Optimization in the Decision Support Systems for Efficient and Robust Energy Networks (ICT)" http://energy-opt.eu and in anticipation of the forthcoming PGMO-COST "Workshop on Validation and […]
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CIAC 2015: SECOND ANNOUNCEMENT AND CALL FOR PAPERS9th International Conference on Algorithms and Complexity (CIAC)May 20-22, 2015, Paris, Francehttp://www.lamsade.dauphine.fr/~ciac2015/cfp.phpThe 9th International Conference on Algorithms and Complexity isintended to provide a forum for researchers working in all aspects ofcomputational complexity and the use, design, analysis andexperimentation of efficient algorithms and data structures.Papers presenting original research in the areas of […]
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Solution at the bottom of this page.Like this problem? Try our Contest Problem Book series!Exercise your mind daily with a problem from the AMC-8, AMC-10, or AMC-12, provided by Mathematical Association of America's American Mathematics Competitions.
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Our image of the week shows the courtyard of the British Museum in London with its beautiful glass and steel roof. The courtyard of the British Museum with its famous mathematical roof and reading room in the middle. Image © The British Museum.read more
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One of my favorite foods is a burrito.  One of my favorite places to get a burrito is Chipotle.  Their food is delicious and environmentally friendly. For Halloween 2014, Chipotle is running the following promotion and charity drive.  Chipotle is offering…Read more →
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Deadline November 27, 2014 The University of Bristol, School of Mathematics invites applications for one or more Research Fellowships in association with the Heilbronn Institute for Mathematical Research. You will divide your time equally between your own research and the research programme of the Heilbronn Institute. The Fellowships will be for three years, with a preferred start date in October 2015, though another date may be possible by agreement. Fellows are likely to be working in […]
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Rachel Thomas The bitter battle for the cubic equation. Niccoló Tartaglia (1499-1557).read more
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ICALP 2015 http://www.kurims.kyoto-u.ac.jp/icalp-lics2015/First Call for Papers======================The 42nd International Colloquium on Automata, Languages, andProgramming (ICALP) will take place in the period 6-10 July 2015 inKyoto, Japan. The conference will co-locate with LICS 2015, the 30thACM/IEEE Symposium on Logic in Computer Science. The ICALP 2015conference chair is Kazuo Iwama (Kyoto University).ICALP is the main conference and annual meeting of the […]
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1845 = 3 x 3 x 5 x 41.1845 is a number that can be expressed as the difference of the squares of primes in just one distinct way (A090781).1845 is the number of ways to place three points on a triangular grid of side 7 so that no two of them are adjacent (A238569).1845 is the sum of 11 nonzero 6th powers (A003367).1845 has two representations as a sum of two squares: 1845 = 92 + 422 = 182 + 392.1845 divides 734 - 1.Source: OEIS
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Prime Numbers: Progress and Pitfalls Tuesday, November 11, 2014 6:30-7:30 pmMAA Carriage House Register (beginning October 21)
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Pennant fever is in full swing! For the first time, two wild-card teams—the Kansas City Royals and San Francisco Giants—are taking the field for the World Series. With baseball in the spotlight, it’s a great time to explore a few game changers that highlight mashups of STEM and sports.

### October 20, 2014

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Rachel Thomas It might not be as familiar as the circle or parabola, but it's definitely worth getting to know the hyperbola! Out of the conic sections, we are most familiar with the circle and its generalisation, the ellipse, and the parabola. To most of us, the hyperbola seems a far stranger beast. read more
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Full Professor (W3) in Algorithms and ComplexityRWTH Aachen UniversityFaculty of Mathematics, Computer Science and Natural SciencesWe are seeking qualified applicants for teaching and research in thearea of algorithms and complexity. The starting date is 1st October2015. The research focus of this professorship should be in one orseveral branches of current algorithms research, for example,algorithmic game theory, approximation algorithms, distributedalgorithms, fixed-parameter tractability, […]
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[Apologies if you receive multiple copies of this message]========================================================================*Call for Papers*Computer Communications Journal, Elsevier(Current Impact Factor: 1.352)Special Issue on:Security and Privacy in Unified Communications: Challenges and SolutionsDirect […]
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Colm Mulcahy This week would have been the 100th birthday of Martin Gardner, who is deservedly credited with turning on several generations of people worldwide to the pleasures of maths! To mark the occasion here are some favourite puzzles that, apart from being fun, also lead to some serious maths. American man of letters […]
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1837 = 11 x 167.1837 is a centered dodecagonal number (or a star number) (A003154).1837 is a concentric hexagonal number (A032528).1837 is a value of n for which 2n (3674) and 7n (12859) together use each of the digits 1 to 9 exactly once.1837, 1838, and 1839 are consecutive semiprimes (A056809).1837 is the number of intersections of diagonals in the interior of a regular 18-gon (A006561).Source: What's Special About This Number?

### October 19, 2014

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CALL FOR PAPERS ******************************************** Extended submission deadline: 2 November 2014 (see below for updated schedule) ******************************************** Elsevier - Computer Communications Journal Special Issue on Online Social Networks http://www.journals.elsevier.com/computer-communications/call-for-papers/special-issue-on-online-social-networks1/ Online Social Networks are a massively successful phenomenon, used by billions of users to interact. Nowadays […]
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Ooooo. Scary!  This is a slightly didactic activity on vampire bats.  We’ve given lots of interesting metric and customary unit facts and asked students to relate those sizes to quantities that they are familiar with.  Simply enjoy the season with this…Read more →