Phys.org: Phys.org news tagged with: mathematicians
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en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.Computer generated math proof is too large for humans to check(Phys.org) —A pair of mathematicians, Alexei Lisitsa and Boris Konev of the University of Liverpool, U.K., have come up with an interesting problem—if a computer produces a proof of a math problem that is too big to study, can it be judged as true anyway? In a paper they've uploaded to the preprint server arXiv, the two describe how they set a computer program to proving a small part of what's known as "Erdős discrepancy problem"—the proof produced a data file that was 13-gigabytes in size—far too large for any human to check, leading to questions as to whether the proof can be taken as a real proof.
http://phys.org/news312027154.html
Other SciencesWed, 19 Feb 2014 11:00:02 ESTnews312027154Mathematicians calculate that there are 177,147 ways to knot a tie(Phys.org) —A small team of mathematicians, led by Mikael Vejdemo-Johansson of the of the KTH Royal Institute of Technology in Stockholm, has uploaded a paper to the preprint server arXiv describing a mathematical process they used to determine that the number of ways to tie a tie is 177,147—far more than previous research has suggested.
http://phys.org/news311253254.html
Other SciencesMon, 10 Feb 2014 11:40:01 ESTnews311253254A vexing math problem finds an elegant solution(Phys.org) —A famous math problem that has vexed mathematicians for decades has met an elegant solution by Cornell researchers. Graduate student Yash Lodha, working with Justin Moore, professor of mathematics, has described a geometric solution for the von Neumann-Day problem, first described by mathematician John von Neumann in 1929.
http://phys.org/news303637618.html
Other SciencesThu, 14 Nov 2013 07:47:16 ESTnews303637618New program simulates protein movementsProteins are molecules involved in most of the biological processes that take place in our bodies. They have to move in order to fulfil many of their functions. For example, they open or close to keep and transport the molecules inside them. Until now, costly methods were the only available option for studying these movements: supercomputers were needed and the calculations took many days. The department of mechanics of the Faculty of Engineering in Bilbao has now developed a shorter method. On the basis of the similarity in the way robots and proteins move, the theorems and algorithms used for studying and simulating the mechanisms have been adapted. That way, it is possible to find out more quickly and with the necessary precision how protein movement functions and facilitate the means for influencing the processes in which these molecules participate. The CIC bioGUNE centre is collaborating in this project, thus proving that bioscientific research and mechanical engineering are not that far removed from each other.
http://phys.org/news298117595.html
ChemistryWed, 11 Sep 2013 11:26:49 ESTnews298117595Mathematician proves there are infinitely many pairs of prime numbers less than 70 million units apart(Phys.org) —Mathematician Yitang Zhang of the University of New Hampshire, appears to have taken a major step in solving the twin prime conjecture. He's come up with a mathematical proof that shows that the number of pairs of prime numbers that exist that are less than 70 million units apart is infinite. His proof is currently under review for publication in the journal Annals of Mathematics.
http://phys.org/news287828042.html
Other SciencesWed, 15 May 2013 09:14:19 ESTnews287828042How to manage motorway tolls through the Game TheoryA team led by José Manuel Zarzuelo, Professor of Applied Economics, has applied the co-operative Game Theory to calculating motorway toll charges. The results of the study have been published in the specialised journal European Journal of Operational Research. In this study, the authors propose that sophisticated mathematical methods could be used in traffic management.
http://phys.org/news286548482.html
TechnologyTue, 30 Apr 2013 13:48:09 ESTnews286548482The RSA algorithm (or how to send private love letters)A couple of days ago on The Conversation, I set myself up with a task: to defend the usefulness of so-called "useless" maths. Today, that defence continues, with a look at the RSA algorithm.
http://phys.org/news284806255.html
Other SciencesWed, 10 Apr 2013 09:51:02 ESTnews284806255Researchers seeking to redefine difference between solids and liquids(Phys.org) —Charles Radin a mathematical physicist with the University of Texas and one of his former student's David Aristoff, have built a 2D model material made of disks to represent atoms. In their article published in Notices of the American Mathematical Society, they suggest that their model shows that defining the difference between a solid and a liquid should be more a matter of measuring the way a material responds to shear, than looking at the way its atoms are arranged.
http://phys.org/news284629586.html
Other SciencesMon, 08 Apr 2013 08:46:40 ESTnews284629586Organic electronics—a hot matterOrganic semi-conductors could revolutionise electronics in various areas. Nowadays, components put out such high performances that they are used in small devices like mobile phones. With larger devices, however, the organic components heat up in such an uncontrollable manner that they break down or conduct electricity in an irregular way. Physicists of the TU Dresden (Dresden University of Technology) and mathematicians of the WIAS have collaborated to analyse the typical feedback effects and they describe them for organic semi-conductors in the Physical Review Letters.
http://phys.org/news284624975.html
PhysicsMon, 08 Apr 2013 07:40:01 ESTnews284624975Shrinking blob speeds traveling salesman on his way(Phys.org) —What is the shortest route that a traveling salesman must take to visit a number of specified cities in a tour, stopping at each city once and only once before returning to the starting point? The most accurate way to answer this question is to measure every possible route, then determine which one is shortest. However, this method becomes unfeasible when there are too many cities on the salesman's tour. Jeff Jones and Andrew Adamatzky of the University of the West of England have discovered that they can use a virtual shrinking blob to find a reasonable solution.
http://phys.org/news283522474.html
TechnologyTue, 26 Mar 2013 13:30:01 ESTnews283522474Physics duo discover 13 new solutions to Newtonian three-body orbit problem(Phys.org) —Physicists Milovan Šuvakov and V. Dmitrašinović of the Institute of Physics, Belgrade in Serbia have discovered using computer simulations, 13 new solutions to the three-body problem—predicting patterns that describe how three bodies will orbit around each other in space in a repeating pattern. The two describe how they came up with their solutions using computer simulations in their paper published in Physical Review Letters.
http://phys.org/news282551769.html
PhysicsFri, 15 Mar 2013 07:39:02 ESTnews282551769Shipping technology streamlines UPS' holiday rushWhen Keith Short began delivering packages for UPS 23 years ago, he used bulky pads of paper to track parcels and pens that froze in the cold. Today, Short scans packages on and off his truck with a handheld computer that tells him what to deliver where and when, and can even direct him turn-by-turn.
http://phys.org/news275309510.html
TechnologyFri, 21 Dec 2012 13:30:01 ESTnews275309510Mathematicians find solution to biological building block puzzleAn international team of mathematicians has proposed a new solution to understanding a biological puzzle that has confounded molecular biologists.
http://phys.org/news262958470.html
Other SciencesTue, 31 Jul 2012 13:01:26 ESTnews262958470A wrinkle in space-time: Math shows how shockwaves could crinkle spaceMathematicians at UC Davis have come up with a new way to crinkle up the fabric of space-time -- at least in theory.
http://phys.org/news261922793.html
Other SciencesThu, 19 Jul 2012 13:21:27 ESTnews261922793Marine energy doubled by predicting wave powerThe energy generated from our oceans could be doubled using new methods for predicting wave power. Research led by the University of Exeter, published (27 June) in the journal Renewable Energy, could pave the way for significant advancements in marine renewable energy, making it a more viable source of power.
http://phys.org/news259944289.html
TechnologyTue, 26 Jun 2012 17:00:02 ESTnews259944289Math predicts size of clot-forming cellsUC Davis mathematicians have helped biologists figure out why platelets, the cells that form blood clots, are the size and shape that they are. Because platelets are important both for healing wounds and in strokes and other conditions, a better understanding of how they form and behave could have wide implications.
http://phys.org/news257176756.html
Other SciencesFri, 25 May 2012 14:59:26 ESTnews257176756Mathematics: First-ever image of a flat torus in 3DJust as a terrestrial globe cannot be flattened without distorting the distances, it seemed impossible to visualize abstract mathematical objects called flat tori in ordinary three-dimensional space. However, a French team of mathematicians and computer scientists has succeeded in constructing and visually representing an image of a flat torus in three-dimensional space. This is a smooth fractal, halfway between fractals and ordinary surfaces. The results are published in PNAS.
http://phys.org/news254640881.html
Other SciencesThu, 26 Apr 2012 06:35:24 ESTnews254640881San Francisco startup makes data science a sport(AP) -- Strange secrets hide in numbers. For instance, an orange used car is least likely to be a lemon. This particular unexpected finding came to light courtesy of a data jockey who goes by the Internet alias SirGuessalot, who in fact wasn't guessing at all. Instead, he and his partner, PlanetThanet, relied on the hard math skills that make them top contenders in a sport tailor-made for the 21st century: competitive number-crunching.
http://phys.org/news253716737.html
TechnologySun, 15 Apr 2012 13:52:30 ESTnews253716737Establishing a new scalar curvature flow methodMathematically, is it possible to continuously deform a rough sphere into a perfect sphere? Under what situations can we solve the differential equations?
http://phys.org/news249558439.html
Other SciencesMon, 27 Feb 2012 09:48:19 ESTnews249558439'Invisibility' cloak could protect buildings from earthquakesUniversity of Manchester mathematicians have developed the theory for a Harry Potter style 'cloaking' device which could protect buildings from earthquakes.
http://phys.org/news248437729.html
Other SciencesTue, 14 Feb 2012 10:29:07 ESTnews248437729Fall of Communism changed mathematics in US: New studyThe collapse of the Soviet Union in 1992 brought an influx of Soviet mathematicians to U.S. institutions, and those scholars' differing areas of specialization have changed the way math is studied and taught in this country, according to new research by University of Notre Dame Economist Kirk Doran and a colleague from Harvard.
http://phys.org/news247854846.html
Other SciencesTue, 07 Feb 2012 16:34:13 ESTnews247854846Climate and the statistics of extremes(PhysOrg.com) -- Swiss mathematicians have shown that the risk of extreme climate events is largely underestimated. They are developing a model for better understanding the impact of climate change.
http://phys.org/news246087017.html
EarthWed, 18 Jan 2012 06:10:02 ESTnews246087017New report examines the use of digital technology in educationA key issue facing the UK is how to inspire the next generation of scientists, technologists, engineers and mathematicians on which our future well-being and economy depends. A new report, published yesterday [8 Nov], examines how smart phones and other portable digital technologies could be used in the classroom to make learning more stimulating and engaging.
http://phys.org/news240051010.html
Other SciencesWed, 09 Nov 2011 08:50:18 ESTnews240051010Measuring the distance of processesA milestone in the description of complex processes - for example the ups and downs of share prices - has been reached by mathematicians at the Ruhr-Universität Bochum. Researchers led by Prof. Dr. Holger Dette (stochastics) have developed a new method in spectral analysis, which allows a classical mathematical model assumption, so-called stationarity, to be precisely measured and determined for the first time. The approach also makes it possible to construct statistical tests that are considerably better and more accurate than previous methods. The researchers report on their results in the Journal of the American Statistical Association.
http://phys.org/news239025380.html
Other SciencesFri, 28 Oct 2011 12:56:28 ESTnews239025380Cracking the codeAfter the 2008 financial crisis hit, many people were startled to learn that the leaders of some investment banks knew little about the risks their firms had taken.
http://phys.org/news234503064.html
Other SciencesTue, 06 Sep 2011 04:47:02 ESTnews234503064Google pays tribute to 'Fermat's Last Theorem'Google paid tribute on Wednesday to 17th century French mathematician Pierre de Fermat, transforming its celebrated homepage logo into a blackboard featuring "Fermat's Last Theorem."
http://phys.org/news232814569.html
TechnologyWed, 17 Aug 2011 15:43:12 ESTnews232814569Cooperation vs. Competition: Greed is good -- but only a moderate amount(PhysOrg.com) -- Relationships between cooperation, competition, and society have long been pondered by psychologists, sociologists, anthropologists, economists, philosophers, and mathematicians. While (as might be expected) a range of conclusions have been reached, one factor that appears to be essential in achieving and maintaining an equitable distribution of human well-being is social cohesion – that is, a societal infrastructure characterized by high levels of cooperation and a large number of social ties between members of the population. At the same time, however, individual self-interest appears to be inversely related to – and indeed often leads to a breakdown of – social cohesion. As researchers in Switzerland have recently found, however, a moderate level of greed can actually establish a framework in which cooperation and agglomeration (grouping) flourish and societal cohesion prevails.
http://phys.org/news230450954.html
Other SciencesThu, 21 Jul 2011 07:10:04 ESTnews230450954After almost 20 years, math problem fallsMathematicians and engineers are often concerned with finding the minimum value of a particular mathematical function. That minimum could represent the optimal trade-off between competing criteria — between the surface area, weight and wind resistance of a car’s body design, for instance. In control theory, a minimum might represent a stable state of an electromechanical system, like an airplane in flight or a bipedal robot trying to keep itself balanced. There, the goal of a control algorithm might be to continuously steer the system back toward the minimum.
http://phys.org/news230182648.html
TechnologyMon, 18 Jul 2011 04:37:54 ESTnews230182648Using math to speed up school buses(PhysOrg.com) -- Optimizing school bus routes is a lot more complicated than one might think. The International School of Geneva handed their problem over to a group of EPFL mathematicians.
http://phys.org/news226746931.html
Other SciencesWed, 08 Jun 2011 10:16:22 ESTnews226746931Significant gap between best and worst Maths Trainee Teachers in EnglandA significant gap between the best and worst maths trainee teachers in England has been revealed in new research published today (22nd March 2011). This applies to both general Primary trainee teachers and to Secondary specialist trainee maths teachers.
http://phys.org/news220786174.html
Other SciencesThu, 31 Mar 2011 10:29:55 ESTnews220786174