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Pseudo-mathematics and financial charlatanismYour financial advisor calls you up to suggest a new investment scheme. Drawing on 20 years of data, he has set his computer to work on this question: If you had invested according to this scheme in the past, which portfolio would have been the best? His computer assembled thousands of such simulated portfolios and calculated for each one an industry-standard measure of return on risk. Out of this gargantuan calculation, your advisor has chosen the optimal portfolio. After briefly reminding you of the oft-repeated slogan that "past performance is not an indicator of future results", the advisor enthusiastically recommends the portfolio, noting that it is based on sound mathematical methods. Should you invest?
http://phys.org/news316347117.html
Other SciencesThu, 10 Apr 2014 11:12:12 ESTnews316347117New analysis of US elementary school mathematics finds half-century of problematic 'strands' structureDuring the "New Math" movement of the 1960s, a team of mathematicians developed a new structure for elementary mathematics. Instead of having a single subject, namely, school arithmetic, as its central core, this new structure instead had eight "strands" that were supposed to tie together elementary mathematics content. The strands structure has persisted to this day. In an article in the November 2013 issue of the Notices of the American Mathematical Society, Liping Ma argues that the strands structure has significantly weakened U.S. school mathematics.
http://phys.org/news301057992.html
Other SciencesTue, 15 Oct 2013 12:13:28 ESTnews301057992Celebrating the mathematical genius RamanujanOn December 22, 1887, Srinivasa Ramanujan was born to a poor family in the state of Tamil Nadu in South India. From humble and obscure beginnings, he blossomed into one of the greatest mathematical geniuses of all time. Largely self-taught and cut off from much of the current mathematical work of his time, he nevertheless produced observations and results that continue to dazzle.
http://phys.org/news271998542.html
Other SciencesTue, 13 Nov 2012 03:10:07 ESTnews271998542