Communications once recalled that on Saturday afternoons, ptivately and without fee, Ten Darn would teach hinr calculus, which was In memoriam Dirk Jan Struik: beyond the then curriculum of secondary schools In .an interview, Struik described how: Marxist mathematician, historian After we had talked about the secrets of the limit and and educator (30 September, I 894 how to integrate the sine and the cosine functions, we talked about other things. He was a man of great cul­ - 2 I October, 2000) ture. I learned a lot about literature that was not taught in high school. (Powell and Frankenstein, 1999, p 421) Struik read French literatur·e (Balzac and Zola) and Marxist ARTHUR B. POWELL, MARILYN texts, mainly in German He also became acquainted with FRANKENS I BIN leaders of a small Marxist patty, the Sociaal Democratise he Partij. [1] He once noted that Ten Dam's mentorship was pivotal for his career: In 1911, Ten Dam, who found that a fellow like myself should not just get lost somewhere, wanted me to enter the university In the highly stratified Dutch society of that time, this was a tremendous step The son of a grammar school teacher going to the university.. That was something very particular It happened that I had to learn latin and Greek So for a whole year, I studied Latin and Greek in The Hague. In 1912, I did my exam for the university and had done enough latin and Greek to be admitted into Leiden University. (quoted in Powell and Frankenstein, 1999, p. 423) Besides len Dam, other teachers identified Struik as 'uni­ versity material' However, Ten Dam was also financially instrumental: he paid for Struik's year of pre-university Dirk Jan Struik, Professor Emeritus of mathematics at the study at Hogere Bugerschool in I he Hague This special Massachusetts Institute of Technology, died peacefully on school served the upwardly-mobile sector of the middle Saturday, 21 October 2000 at his home in Belmont, class, enabling students to take a supplementary examina­ Massachusetts His death occurred exactly three weeks after tion in Greek and latin to gain: he had completed 106 years of life In celebration for wbat access to the universities, which were otherwise was to be his last birthday, friends from around the world reserved for Gymnasium pupils (Alberts, 1994, p. 281) presented him with multicolor posters containing, from each, expressions of admiration and gratitude for the depth Afterward, Ten Dam also underwrote Struik's first year of and rigor of his academic scholarship and the boldness of his university studies: Struik's father later repaid hinr political stances; moving tributes attesting to how he In 1912, Struik entered Leiden University to study mathe­ emiched their lives; and words of hope for the worldwide matics and physics, taking courses from Lorentz and de struggle for justice and peace that he championed Sitter. In contrast to his high school notions where science Besides straddling academic and political commitments, was taught as something tbat 'was' and to be learned by rote, Struik's life sparmed many eras Early in his youth, both his he attributed his understanding of the spirit of mathematics mathematical and political proclivities manifested them­ and science to the theoretical physicist Paul Ehrenfest at selves. In 1894, he was born into the lower middle class in Leiden: Rotterdam, Holland, where he studied from grammar tluough All the science I had learned before was static high school. His father was a schoolteacher of mathematics in a public school in a working class quarter who taught Struik Ehrenfest showed me how science is a living and grow­ ing field (Powell and Frankenstein, 1999, p 442) and his two siblings, sometinres in the form of problems and mathematical 'tricks'. He also gave them mathematics books, Elsewhere (Rowe, 1989), Struik explained that: took them to museums and involved them in liberal, pro-cap­ The way [Einenfest] taught statistical mechanics and italist politics. In a recent interview, Struik speculated that electromagnetic theory, you got the feeling of a growing he inherited a love of mathematics and history from his father science that emerged out of conflict and debate (p. 15) (Powell and Frankenstein, 1999, p. 421) Struik went on to high school despite objections hom his Plausibly, Einenfest's pedagogy contributed to Struik's early grandmother who, observing caste precepts, felt that it was insights into a dialectics of mathematics and science. In beyond his station in life There several teachers considered 1922, Stiuik received a doctmate with a dissertation on Struik clever, especially his mechanics teacher G W. Ten applications of tensor methods to Riemannian manifolds Dam who stinrulated his mathematical development Struik (Struik, 1922) However; even before receiving a doctorate, 40 he had already embarked on publishing his many mathema­ has probably done more to promote interest in and tical reflections (Schouten and Sttuik, 1918) [2] appreciation for the rich diversity of mathematical Iluoughout his life, Struik did considerable work in ideas and cultures than any other single volume on the and kept current with developments in tensor calculus, history of mathematics (Rowe, 1994, p. 245) Riemannian manifolds, differential geometry and absolute Perhaps not as well known as his other academic achieve­ differential calculus At age 101, he published a review ments, Struik was a founding editor in 1936 of the (1995a) of Karin Reich's (1994) history oftensor calculus Marxist-miented journal, Science and Society, and the edi­ and a few years earlier (1989) had contributed his own tor of books on Marxism (Struik 1964a and 1971) He was account of the emergence of tensm calculus. a scholar-activist whose work unites themy and practice in One year after completing his doctorate, Struik married the struggle for social and economic justice Internation­ Saly Ruth Ramler, a native of Czechoslovakia, who also ally, he influenced scholars from diverse disciplines - became an accomplished mathematician She died in 1993 mathematicians, philosophers of mathematics and science at age 99 From 1924 to 1926, with Struik's Rockefeller and histmians of mathematics and science - as well as Fellowship, he and his wife travelled to several other Euro­ inspired practical activities. pean countries and studied, met and collaborated with many The political economy of the Uuited States at the time also of the great mathematicians and scientists of the twentieth influenced the course of research. During the second world century, including Tullio Levi-Civita, Richard Comant and war years much of the normal mathematical research acti­ David Hilbert vity at, for example, MIT came to a standstill Some Nevertheless, by 1926, Struik found himself unemployed professms were involved in resear·ch for the military; others, in Holland and with limited opportunities in Europe As a including Stmik, canied heavy teaching duties connected with the training of military personnel Aside from this, long-time mathematical and political friend of Sttuik, Lee Struik spent much of his time pursuing an entirely new Lorch of York University in TOronto, Canada, understood research project: to study the migins of American science ftom him and wrote in an electronic correspondence to us, in their social and economic setting, a subject that had barely that Struik's "political commitments and activities closed been touched on by historians before fhis time .. [3] European opportunities" Eventually, however, Struik As the above indicates, the influence of Struik's wmk was received two offers, one from Otto Schmidt to go to Moscow not just commed to the academy With other left and liberal and the other from Nor bert Wiener to visit MII It was a activists, from 1944 to 1948, Struik founded and taught at hard choice for him: in the end, he decided to accept the the Samuel Adams School, where, on a volunteer basis, teaching post from Samuel Stratton, the president of MIT individuals taught courses on labor laws, international con­ From then untill960, Struik taught and researched at MIT ditions, science, and so forth. Such collaboration between becoming an internationally acclaimed mathematician and the left and liberals led to establishing other progressive historian of mathematics and science Among other fields schools such as the Jefferson School in New York City and of mathematics, he worked principally in differential geo­ others in places like Chicago, Cleveland, and San Francisco. metry, writing a lmge number of mathematical papers and Like these schools, Struik's educational project filled a need books, including his 1950 text Lectures in Classical and for centers that would promote progressive and militant Differential Geometry citizenship among adult workers and an interest in trade Commenting on the personal and educational importance unions and left-wing political parties, goals thought of Struik's book, Mel Rothenberg (2000) observes that: unattainable in public schools and colleges The Importance of Strnik's educational work seemed to be Unlike any other math text I have seen, the book is directly proportional to how subversive he was considered maddeningly anecdotal, and richly historical and poli­ by the US Federal Bureau of Investigation (FBI) By April of tical. Struik loved in particular the Ftench geometers of 1949, this mathematician and historian of science was in the end of the 18th century who were by and large serious trouble with the FBI. He also became a victim of devoted supporters of the French Revolution But while the political witch-hunt lead by Senator Joseph McCarthy reveling in the ironies and complexities of the history, and the House Un-AmericanActivities Conunittee (HUAC) he also treated the basic mathematical ideas and key In July of 1951, he was charged with being a member examples with great love and respect While the book of the Communist Party (of the USA) and having taught lacks the formal rigor of most serious math texts, it Marxism.