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February 2001
"Loving Math Infinitely" is the title of a piece by Josephina Alvarez, professor of mathematics at New Mexico State University at Las Cruces, that ran in the Chronicle Review section of the January 19, 2001 Chronicle of Higher Education. Prof. Alvarez describes her experiences teaching ``a course on mathematics appreciation for nonscience majors." This is a rich piece, with many valuable ideas for mathematics teachers at any level. She finds that in order to reach her students, she has to ``look into their training and interests. I need to learn to use their language. My challenge is to extract the mathematical ideas in music, philosophy, art, and other seemingly nonmathematical fields." She elaborates on ``As soon as I knew what I should be looking for, I started to see mathematics in unexpected places." with many examples, and concludes: ``Interestingly enough, once we saw mathematics as firmly rooted in human need and experience, it seemed easy to depart on a tour of increasing abstraction." To summarize her article in two sentences: ``Mathematics appreciation is more than a course. It is an attitude that we should cultivate in every mathematics course." How do fish swim? ``The dynamics of swimming fish and flapping flags involves a complicated interaction of their deformable shapes with the surrounding fluid flow." This is the beginning of a ``letter to Nature" (14 December 2000) from a Courant Institute/Rockefeller University team headed by Jun Zhang. Their research used flexible filaments in a flowing soap film 34 microns thick. In particular they report that beyond a certain critical length the system becomes bistable, with both a ``stretchedstraight state" and a ``stable flapping state" possible.
Aninteresting final point: ``Swimming offers alternatives comparable to the bistability of our filament. Thestretchedstraight state is the analogue of a glide, whereas the flapping state isanalogous to swimming. Efficient propulsion uses the natural oscillations of theswimmer, which in the filament is a property mediated by stiffness."A web presentation of this research is available. Digital Archimedes. The thousandyearold palimpsest that turned up on the front pages in 1998 is undergoing a thoroughly modern analysis. A report entitled ``Through the Layers, a Glimmer of Archimedes" by Lawrence Biemiller (The Chronicle of Higher Education, January 26, 2001) describes this treasure: a precious euchologion, a 10th century Greek prayer book, was written on parchment that had previously been used for a collection of works by the great Archimedes. Even though the pages had been scraped clear of the original text, enough remained for the Danish scholar Johan Ludvig Heiberg to recognize. The discovery (published in 1907) was sensational: among other works the manuscript contained a copy of ``The Method," an important work of Archimedes that had been thought completely lost. Biemiller tells the story of how this item came to be sold at Christies' in 1998 (for $2 million) and how the present owner has agreed to pay for the Walters Art Gallery in Baltimore to take over the conservation of the manuscript and the computeraided digital imaging of its pages. Two teams, one from Johns Hopkins and one from the Rochester Institute of Technology, are collaborating with the Walters. They predict a much more complete transcription of the text and, quite important, access to the original drawings. The project should take four years. Math teachers are nerds ... not. John Dunford, a math teacher himself (and general secretary of the somewhat ominously named Secondary Heads Association) takes issue with a survey of 12yearold schoolchildren's ``impressions of their maths teachers." In a piece in the January 4, 2001 Guardian he defends the profession from the merciless gaze of the young: ``Fat, bald nerds with glasses and beards apparently predominate at the front of maths classrooms. These sad figures are apparently seen as unmarried and unstylish, wrinkled from all the hard thinking that they have had to do in order to solve maths problems throughout their lives." Not so, says Dunford. Speaking of his colleagues over the years: ``I cannot really recall anyone who might have been described as a nerd. ... family people mostly, with a good range of interests from swimming and badminton to reading and cooking." But wait! ``There could be an age factor too. I may not find my colleagues nerdish, but I do recall my own maths teachers at school as coming into that category." The piece is available online.
Math and Fiction. Incompatible careers? Not if you ask Manil Suri, expert in partial differential equations, Professor of Mathematics at the University of Maryland Baltimore County, and author of a New Yorker short story (``The Seven Circles," February 14, 2000) and a novel ``The Death of Vishnu" (Norton, January 2001). Suri was interviewed by Ivar Stakgold in the JanuaryFebruary 2001 SIAM News. The interview ranges over many topics, but keeps returning to the similarities and differences between doing math and writing fiction. Suri: ``What's a little eerie is how similar the thought processes can be for the two activities. Suppose I am trying to decide whether a mathematical entity X is bounded. I might try to think of varous ways that X might try to misbehave ... . Fiction presents a similar scenario  perhaps X is now a character in a certain situation. To find out what happens next, I would try to put myself in X's place, looking for all the ways I could proceed, maneuvering around any of the story's imposed constraints, and choosing the most interesting path." He mentions a reading at MSRI after which a colleague told him ``It's all about Fourier series," i.e. that ``all fiction is composed of the same Fourier modes: love, death, marriage, sex and so on, and one gets different stories by assembling different combinations of these basis functions." Prof. Suri knows how to milk a metaphor: ``Certainly a key strategy to getting fiction published is to orthogonalize to what has been written before." Tony Phillips

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