Phys.org news tagged with:mathematical problems
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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.New computational methodology gives unexpected answers to two Hilbert problemsA paper titled "Numerical infinities and infinitesimals: Methodology, applications, and repercussions on two Hilbert problems," published in EMS Surveys in Mathematical Sciences describes a recent computational methodology related to the separation of mathematical objects from numeral systems involved in their representation. It allows mathematicians to work with infinities and infinitesimals numerically in a unique computational framework in all situations requiring these notions. The methodology does not contradict Cantor's, and is based on Euclid's Common Notion no. 5, "The whole is greater than the part," applied to all quantities (finite, infinite, and infinitesimal) and to all sets and processes (finite and infinite). The non-contradictory of the approach has been proven by Italian logician Prof. Gabriele Lolli.
https://phys.org/news/2017-11-methodology-unexpected-hilbert-problems.html
Mathematics Mon, 27 Nov 2017 05:44:42 ESTnews430983874These four easy steps can make you a math whizMany people find mathematics daunting. If true, this piece is for you. If not, this piece is still for you.
https://phys.org/news/2017-09-easy-math-whiz.html
Mathematics Tue, 12 Sep 2017 08:40:01 ESTnews424421044Student shows how diagrams can be used to make buildings energy smartAn Imperial engineering student showcases his equations as a set of beautiful diagrams and describes how they can be used to optimise processes.
https://phys.org/news/2016-07-student-diagrams-energy-smart.html
Engineering Fri, 22 Jul 2016 06:50:02 ESTnews388388098Researchers chip away at Smale's 7th unsolved problem in mathematics(Phys.org)—How do you arrange a group of points on the surface of a sphere so that all the points are as far apart from each other as possible? With two points, the answer is easy: place them on opposite sides of the sphere, as if they are endpoints of the diameter. With three points, make them the vertices of an equilateral triangle, and so on. But as the number of points increases, so does the difficulty of the problem.
https://phys.org/news/2016-07-chip-smale-7th-unsolved-problem.html
General Physics Fri, 15 Jul 2016 09:30:03 ESTnews387773493Cars must be considerate of the driver when talkingSmart telephones and TVs are well-established technical gadgets in today's society. The same cannot be said about smart cars with dialogue systems that can understand you and communicate as if they were a person sitting in the seat next to you. A PhD thesis in linguistics from the University of Gothenburg presents the theory that cars should consider both the driver and the traffic situation when communicating.
https://phys.org/news/2015-10-cars-considerate-driver.html
Engineering Mon, 26 Oct 2015 09:50:02 ESTnews365070500Don't freak if you can't solve a math problem that's gone viralIt's been quite a year for mathematics problems on the internet. In the last few months, three questions have been online everywhere, causing consternation and head-scratching and blowing the minds of adults worldwide as examples of what kids are expected to know these days.
https://phys.org/news/2015-06-dont-freak-math-problem-viral.html
Mathematics Thu, 25 Jun 2015 11:00:01 ESTnews354444834Why we fell out of love with algorithms inspired by natureWhile computers are poor at creativity, they are adept at crunching through vast numbers of solutions to modern problems where there are numerous complex variables at play. Take the question of finding the best delivery plan for a distribution company – where best to begin? How many vehicles? Which stretches of road need to be avoided at which times? If you want to get close to a sensible answer, you need to ask a computer.
https://phys.org/news/2015-06-fell-algorithms-nature.html
Computer Sciences Wed, 03 Jun 2015 08:10:01 ESTnews352536002New type of cryptography that can better resist "dictionary attacks"Cryptographers in China have have developed a new type of cryptography that can better resist so-called offline "dictionary attacks", denial of service (DoS) hacks, and cracks involving eavesdroppers. Their approach, reported in the International Journal of Electronic Security and Digital Forensics, extends and improves a type of cryptography that uses an intractable mathematical problem as its basis.
https://phys.org/news/2014-08-cryptography-resist-dictionary.html
Computer Sciences Tue, 05 Aug 2014 08:56:42 ESTnews326447793Magic and symmetry in mathematicsWe live in a three-dimensional world. Despite the many benefits this presents, it also makes for a complicated math problem, according to Northeastern associate professor of mathematics Ivan Loseu. The best a path to a solution, he said, is reducing the number of variables we're dealing with.
https://phys.org/news/2014-03-magic-symmetry-mathematics.html
Mathematics Wed, 12 Mar 2014 06:40:02 ESTnews313824064Rota's Conjecture: Researcher solves 40-year-old math problem(Phys.org) —A Victoria University mathematician has experienced his own eureka moment, solving a 40 year-old mathematical problem.
https://phys.org/news/2013-08-rota-conjecture-year-old-math-problem.html
Mathematics Thu, 15 Aug 2013 09:13:05 ESTnews295776762Preschoolers inability to estimate quantity relates to later math difficultyPreschool children who showed less ability to estimate the number of objects in a group were 2.4 times more likely to have a later mathematical learning disability than other young people, according to a team of University of Missouri psychologists. Parents may be able to help their children develop their skills at approximating group sizes by emphasizing numerals while interacting with young children.
https://phys.org/news/2013-08-preschoolers-inability-quantity-math-difficulty.html
Social Sciences Wed, 14 Aug 2013 14:38:07 ESTnews295709876Computer scientists develop 'mathematical jigsaw puzzles' to encrypt software(Phys.org) —UCLA computer science professor Amit Sahai and a team of researchers have designed a system to encrypt software so that it only allows someone to use a program as intended while preventing any deciphering of the code behind it. This is known in computer science as "software obfuscation," and it is the first time it has been accomplished.
https://phys.org/news/2013-07-scientists-mathematical-jigsaw-puzzles-encrypt.html
Computer Sciences Mon, 29 Jul 2013 18:54:46 ESTnews294342870Researchers test quantum encryption hacking risk(Phys.org) —Quantum communication systems offer the promise of virtually unbreakable encryption. Unlike classical encryption, which is used to send secure data over networks today and whose security depends on the difficulty of solving mathematical problems like the factoring of large numbers, most quantum encryption schemes keep the encryption key separate from the data. This approach ensures that an eavesdropper with access only to the data could not decipher the key. However, researchers have recently demonstrated that even quantum encryption may be susceptible to hacking.
https://phys.org/news/2013-05-quantum-encryption-hacking.html
Quantum Physics Tue, 28 May 2013 09:41:55 ESTnews288952898What is behind Einstein's turbulences? Calculations give initial insight into relativistic properties of this process(Phys.org) —The American Nobel Prize Laureate for Physics Richard Feynman once described turbulence as "the most important unsolved problem of classical physics", because a description of the phenomenon from first principles does not exist. This is still regarded as one of the six most important problems in mathematics today. David Radice and Luciano Rezzolla from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam have now taken a major step toward solving this problem: For the first time, a new computer code has provided relativistic calculations that give scientists a better understanding of turbulent processes in regimes that can be found in astrophysical phenomena.
https://phys.org/news/2013-04-einstein-turbulences-insight-relativistic-properties.html
General Physics Wed, 03 Apr 2013 16:21:47 ESTnews284224873Shrinking 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.
https://phys.org/news/2013-03-blob-salesman.html
Computer Sciences Tue, 26 Mar 2013 13:30:01 ESTnews283522474Model allows engineers to test fuel system efficiency on computers(Phys.org) —Engineers will be able to design better fuel systems for everything from motorcycles to rockets faster and more inexpensively because of a mathematical fuels model developed at The University of Alabama in Huntsville.
https://phys.org/news/2013-03-fuel-efficiency.html
Energy & Green Tech Tue, 19 Mar 2013 08:13:45 ESTnews282899618Researcher predicts errors in IT systemsImagine if we never had any more computer problems. No more rail travel chaos caused by signal failures, no more accidents, internet banking that is always secure and medical equipment that always works as it should. It would be a dream world. But aren't errors inevitable in computer systems? Won't some things always be overlooked? Not anymore! We no longer have to overlook anything, according to University of Twente PhD candidate Eduardo Zambon of the Centre for Telematics and Information Technology (CTIT). Because with model checking we can remove the faults from the systems, making them error-free. Zambon, originally from Brazil, obtained his PhD on this subject on January 24, 2013.
https://phys.org/news/2013-01-errors.html
Computer Sciences Thu, 31 Jan 2013 08:20:03 ESTnews278841645Researchers examining electric vehicles and the power gridAs plug-in electric vehicles become an ever more central part of America's daily life, University of Notre Dame researchers are anticipating what that development will mean for the nation's power grid.
https://phys.org/news/2012-12-electric-vehicles-power-grid.html
Energy & Green Tech Wed, 12 Dec 2012 15:15:06 ESTnews274547700Supercomputing for a superproblem: A computational journey into pure mathematicsA world-famous mathematician responsible for solving one of the subject's most challenging problems has published his latest work as a University of Leicester research report.
https://phys.org/news/2012-11-supercomputing-superproblem-journey-pure-mathematics.html
Mathematics Tue, 06 Nov 2012 12:37:45 ESTnews271427855Math anxiety causes trouble for students as early as first gradeMany high-achieving students experience math anxiety at a young age—a problem that can follow them throughout their lives, new research at the University of Chicago shows.
https://phys.org/news/2012-09-math-anxiety-students-early-grade.html
Social Sciences Wed, 12 Sep 2012 12:02:24 ESTnews266670138New mathematical framework formalizes oddball programming techniquesTwo years ago, Martin Rinard's group at MIT's Computer Science and Artificial Intelligence Laboratory proposed a surprisingly simple way to make some computer procedures more efficient: Just skip a bunch of steps. Although the researchers demonstrated several practical applications of the technique, dubbed loop perforation, they realized it would be a hard sell. "The main impediment to adoption of this technique," Imperial College London's Cristian Cadar commented at the time, "is that developers are reluctant to adopt a technique where they don't exactly understand what it does to the program."
https://phys.org/news/2012-05-mathematical-framework-formalizes-oddball-techniques.html
Computer Sciences Wed, 23 May 2012 06:46:28 ESTnews256974366Choreographing dance of electrons offers promise in pursuit of quantum computers(PhysOrg.com) -- In the basement of Hoyt Laboratory at Princeton University, Alexei Tyryshkin clicked a computer mouse and sent a burst of microwaves washing across a silicon crystal suspended in a frozen cylinder of stainless steel.
https://phys.org/news/2012-01-choreographing-electrons-pursuit-quantum.html
General Physics Thu, 12 Jan 2012 05:12:53 ESTnews245567380Fighting violent gang crime with math(PhysOrg.com) -- UCLA mathematicians working with the Los Angeles Police Department to analyze crime patterns have designed a mathematical algorithm to identify street gangs involved in unsolved violent crimes. Their research is based on patterns of known criminal activity between gangs, and represents the first scholarly study of gang violence of its kind.
https://phys.org/news/2011-10-violent-gang-crime-math.html
Mathematics Mon, 31 Oct 2011 05:42:01 ESTnews239258507Low-cost electronic tablet proves worth in Indian classroomThe U.S.- and Singapore-based creators of the low-cost I-slate electronic tablet are preparing for full-scale production now that a yearlong series of tests has shown that the device is an effective learning tool for Indian children.
https://phys.org/news/2011-10-low-cost-electronic-tablet-worth-indian.html
Consumer & Gadgets Mon, 03 Oct 2011 10:53:54 ESTnews236858004How bumblebees tackle the traveling salesman problemIt is a mathematical puzzle which has vexed academics and travelling salesmen alike, but new research from Queen Mary, University of London's School of Biological and Chemical Sciences, reveals how bumblebees effectively plan their route between the most rewarding flowers while travelling the shortest distances.
https://phys.org/news/2011-06-bumblebees-tackle-salesman-problem.html
Plants & Animals Wed, 29 Jun 2011 04:04:39 ESTnews228539063SpaceMath@NASA breaks the three million download markThe SpaceMath@NASA mathematics resource for teachers and students recently achieved a landmark number of downloads.
https://phys.org/news/2011-04-spacemathnasa-million-download.html
Mathematics Thu, 07 Apr 2011 07:44:29 ESTnews221381057A zero sum game(PhysOrg.com) -- New light has been shed on the 150-year-old math puzzle known as the Riemann hypothesis, say mathematical physicists at the University of Sydney.
https://phys.org/news/2011-03-sum-game.html
Mathematics Mon, 21 Mar 2011 05:35:18 ESTnews219904480Can bees color maps better than ants?In mathematics, you need at most only four different colors to produce a map in which no two adjacent regions have the same color. Utah and Arizona are considered adjacent, but Utah and New Mexico, which only share a point, are not. The four-color theorem proves this conjecture for generic maps of countries, but actually of more use in solving scheduling problems, scheduling, register allocation in computing and frequency assignment in mobile communications and broadcasting.
https://phys.org/news/2011-03-bees-ants.html
Mathematics Thu, 10 Mar 2011 10:20:04 ESTnews218972895Soap films help to solve mathematical problemsSoap bubbles and films have always fascinated children and adults, but they can also serve to solve complex mathematical calculations. This is shown by a study carried out by two professors at the University of Malaga (Spain), who have succeeded in solving classic problems using just such an innovative procedure.
https://phys.org/news/2011-01-soap-mathematical-problems.html
General Physics Tue, 25 Jan 2011 13:06:06 ESTnews215183055New technology displays math problems on browsers(PhysOrg.com) -- A new technology developed with help from Project Euclid at Cornell University Library makes it possible to display complex mathematics problems on Web pages.
https://phys.org/news/2011-01-technology-math-problems-browsers.html
Mathematics Wed, 12 Jan 2011 06:34:08 ESTnews214036425