ICHMSponsored Subsession of the Special Session on the History of Mathematics
Joint Mathematics Meetings, Washington, D.C. (USA), 7 January, 2009
By Karen V. H. Parshall
This set of lectures, delivered by an international group of historians of mathematics, once again formed the first day of a twoday Special Session on the History of Mathematics at the Joint Mathematics Meetings held this year in Washington, D.C.
The session was organized by Joseph W. Dauben (The Graduate Center of the City University of New York), Patti W. Hunter (Westmont College),
Deborah Kent (Hillsdale College), and Karen V. H. Parshall (University of Virginia)
The session organizers from left to right: Deborah Kent, Patti Hunter, Joe Dauben, and Karen Parshall.
and was comprised of—in the order of presentation—the following speakers and talks:
Mathematics in Medieval India: The Bijagaita of Jñanaraja
Toke Lindegaard Knudsen, SUNY Oneonta, USA
Among the unpublished and unstudied mathematical works of medieval India is the Bijagaita of Jñanaraja, who flourished
in what is now the state of Maharashtra around 1500 C.E. While the treatise is the third and last part of the
Siddhāntasundara, a larger work on astronomy and cosmology, it treats mathematics as a topic in its own right. The presentation
focused on mathematical results from medieval India based on a study of the Bijagaita.
Trigonometry on the Edge: Interpolation in Ancient and Medieval Astronomy
Glen R. Van Brummelen, Quest University, Canada
As odd as it sounds, interpolation was a branch of trigonometry during the medieval period in India and Islam. It led a
peculiar life on the fringes of mathematical astronomy, a mathematical helpmate, but at least in Islam, an overshadowed
sister to geometry. Some of the best scientists (alBiruni and alKashi among them) made serious mistakes when trying to
generate secondorder schemes, but others (including Brahmagupta and Ibn Yunus) constructed conceptual mechanisms
that led to equivalents of modern formulas. This talk examined how several authors conceived of their methods, and what
they thought of them in relation to the entire discipline.
A Medieval Muslim Mathematician Looks at Indian Arithmetic: AlBiruni's Treatise on Sanskrit Rules of Proportion
Kim Plofker, Union College, USA
Rules on various kinds of proportions, from the familiar "Rule of Three" on up as far as the "Rule of Eleven," formed
an important part of Sanskrit arithmetic texts in medieval India. The Central Asian mathematician alBiruni, who
studied Sanskrit mathematics and astronomy in northern India in the early eleventh century, was sufficiently intrigued
by these rules to write an Arabic treatise comparing them to Euclidean notions of ratio: the Maqāla f&ibar; rāashikāt alHind,
or "Treatise on Proportions of the Indians." This presentation examined the way alBiruni treated his subject, why he thought it was
important, and what its consequences were for the interaction of Indian and Islamic mathematics.
The Early Years of Gresham College, London
Robin Wilson, The Open University, UK
The Gresham Chair of Geometry is the oldest mathematics professorship in England, being founded in 1596, after Sir
Thomas Gresham left instructions in his will for the founding of a college at which free lectures in seven subjects would
be given to interested members of the general public. Four hundred years on, this is still the case.
This talk outlined the first one hundred years of the college, and described the geometry professors during this period,
including Henry Briggs (coinventor of logarithms), Isaac Barrow (first Lucasian professor in Cambridge), and Robert
Hooke. It also outlined the founding of the Royal Society, which was intimately associated with Gresham College, and
was based there, for the its first fifty years.
Leibniz and Two Problems of Méré
Maria Sol de Mora, University of the Basque Country UPV/EHU, Spain
This talk explored the encounters and disencounters (mainly the second) of Leibniz and the renowned Chevalier
de Méré, especially during Leibniz's stay in Paris and in the years immediately after, when Leibniz was interested
in mathematical aspects of the theory of probability. The talk examined the contacts of Leibniz with
Pascal's work in the field of probability theory, and the resolution of the two problems proposed by Méré to Pascal, and
referred to by Pascal in his letter to Fermat of July 1654. The concern of Leibniz with the questions of contingency is
well known and goes back to his youth. In 1665, he submitted the "Disputatio juridica de conditionibus," in which he used
numbers to represent what he called "degrees of probability"; he was only 19. Faced with a contingent set of circumstances, he came to
a decision not totally justified by the "Art of Demonstration or of Judgment," but pertaining to the
"Art of Conjecturing."
The Prehistory of the CauchyRiemann Equations
Craig Fraser, University of Toronto, Canada
The CauchyRiemann equations connect the real and imaginary parts of an analytic function. f(z) = p(x; y) + iq(x; y)
is an analytic function on a given domain if and only if the CauchyRiemann equations are satisfied there. Although the
equations are named after Augustin Cauchy (1789–1857) and Bernhard Riemann (1826–1866), they
first appeared in 1752 in a book by Jean d'Alembert (1717–1783) on fluid dynamics. The paper traced the emergence of
the equations and their subsequent development in the period before Cauchy. This history requires examination of the
early theory of partial differential equations, a subject pioneered by Leonhard Euler (1707–1783) and d'Alembert from a
few principles and methods of solution. The prehistory of the CauchyRiemann equations provides insight into the core
technical ideas that would later develop into complex analysis.
Speakers in the morning session from left to right: Glen Van Brummelen, Toke Knudsen, Mary Sol De Mora Charles, Craig Fraser, Kim Plofker, and Robin Wilson.
The Mathematics in Newton's Principia Mathematica
George E. Smith, Tufts University, USA
Did Newton employ the calculus in developing his Principia? This frequently asked question is unfortunate not merely
because it has no simple "yesno" answer, but even more so because it draws attention away from the extraordinary range
of mathematical techniques that he did employ in that book. The talk first surveyed the range of techniques he did
employ, and in the process explained why the question whether he employed the calculus has no "yesno" answer. It then considered
a couple of the many problems peculiar to the physics of the Principia that forced Newton to devise novel
mathematical techniques that reach far beyond any of those people usually have in mind when they ask whether he did
or did not employ the calculus in his physics.
Mrs. Bean's Young Ladies: Mathematics Education in Early Modern England
Kathryn James, Yale University, USA
Textbooks, student notebooks, and household recipe and account books are among the many different types of sources
showing how mathematics was taught and used in popular culture in 17th and 18thcentury England. Fewer explicit
sources exist to show how women were taught mathematics in the early modern period. This paper looked at two late
17thcentury student notebooks (one in the collections of the Folger Shakespeare Library, and one in those of Yale's
Beinecke Library) kept by two young girls who studied arithmetic and calligraphy with their teacher, Mrs. Elizabeth
Bean. The notebooks allow insight into two areas: first, how mathematics was approached as one facet of a more
general education and, second, how arithmetic was situated within a broader commercial and popular cultural context.
A comparison of these notebooks with other student notebooks and printed textbooks of the period allows us to begin to
characterize how mathematics was taught in the early modern period, and how it might have been inflected for different
audiences.
Insights into Cayley's Work on the Quintic
Steven H. Weintraub, Lehigh University, USA
The Lehigh University library has a collection of 40 letters written from Arthur Cayley to Robert Harley between 1859
and 1863, and an unpublished manuscript, "A Memoir on the Quintic Equation," that Cayley was working on at the
time of his death in 1895. Examination of this material, which is available online as part of the library's digital
archive at http://digital.lib.lehigh.edu/remain/con/cayley.html, gives insights into the working relation between Cayley
and Harley as they attacked the quintic from an invarianttheoretic point of view, and into Cayley's lifelong interest in
the quintic.
What Is at Stake in Weierstrass's Criticism of Riemann's Function Theory?
Renaud G. Chorlay, Université Denis Diderot (Paris 7), France
The comparison between the theory of complex functions à la Riemann and à la Weierstrass has been a standard topic
since the end of the 19th century. However, what exactly is at stake remains, to some extent, unclear. This talk argued that an answer to this question
calls for both epistemological and historical work. The talk first stressed elements which are common to both mathematicians, such
as the rejection of brute calculation, the conception of regular functions, and the use of singularities. It drew on the example of Poincaré's
work to show that, long before Weyl's "Idea of a Riemann surface," some mathematicians had
successfully devised a mixed approach. This should help pinpoint more precisely where the differences lie. The presentation also
documented the ways in which these differences were described by late 19thcentury mathematicians: discovery vs. proof,
intuition vs. rigor, geometry vs. arithmetic, transcendental vs. algebraic, global vs. local. Analyzing the meaning and use
of these pairs can contribute to the historical epistemology (in the sense of Daston) of some standard categories in the
mathematical discourse. From a more philosophical viewpoint, it can provide nonstandard case studies for the ongoing
debates on issues such as purity of methods, choice of "proper" setting, and geometric thinking.
Computing Devices, Mathematics Education and Mathematics: Sexton's Omnimetre in Its Time
Peggy Aldrich Kidwell, National Museum of American History, Smithsonian Institution, USA
In 1899, Albert Sexton, a Philadelphia mechanical engineer, received the John Scott Medal of the Franklin Institute
for his invention of the omnimetre, a circular slide rule designed to carry out all the common operations of arithmetic
and trigonometry, except addition and subtraction. At the suggestion of a Belgianborn user of the instrument, it was
inscribed: "NUMERI MUNDUM REGUNT." In part because of instruments like the omnimetre, numbers increasingly
ruled the practical world of the late nineteenth and early twentiethcentury United States. This changed not only
engineering, but mathematics education and mathematics itself.
Did Geometry Need Saving From Bourbaki?
Thomas Drucker, University of WisconsinWhitewater, USA
Siobhan Roberts's biography of H.S.M. Coxeter has in its subtitle the phrase 'The Man Who Saved Geometry.' The
author suggests that Bourbaki was the threat from which geometry was most in need of saving. In particular, negative
statements from Coxeter about Bourbaki are used to suggest that he played a heroic role in bringing down the Bourbaki
monster. This talk made two claims. First, Coxeter was taking aim at something of a travesty of Bourbaki, although it
was not a travesty entirely without foundation. Secondly, the failure of Bourbaki, as Leo Corry suggests in his history of
algebra and mathematical structures, can be attributed to internal diffculties with the Bourbakist program. Coxeter's
accomplishments do not require being set against Bourbaki in order to be admired.
The PolishAmerican Mathematician Joseph Perott
Roger L. Cooke, University of Vermont, USA
The life of Joseph Perott (1854–1924), one of the minor mathematicians of the late nineteenth century, helps to fill in a
few mathematical and historical details from this period in Europe and the United States. Born in Saint Petersburg of
a Polish father and Russian mother, in later life he told people that he had a French father and a Polish mother. In the
1880s, he interacted with Sof'ya Kovalevskaya (1850–1891) in both mathematical and literary activities. At the end of
that decade, he emigrated to the United States and in 1890 became a docent at Clark University, where he remained for
the second half of his life.
Grading the Greats: What G. Castelnuovo and F. Severi thought of One Another in the 1930s
Donald G. Babbitt, UCLA, USA and Judith R Goodstein, California Institute of Technology, USA
Guido Castelnuovo and Francesco Severi were two of most important figures in the history of Italian algebraic geometry
who both carried on a fascinating correspondence with their more junior colleague, Beniamino Segre. The correspondence
to Segre has fortunately been preserved and offers an interesting sociomathematical aperçla;u into Italian algebraic geometry.
Among this correspondence, there is a 1932 letter from Severi to Segre that offers the former's opinion of who was overrated
and who was underrated among the major figures, including Castelnuovo, in (not just Italian) algebraic geometry from
1850 up to the early 20th century. He also gives an unsurprisingly immodest appraisal of his own contributions. There
is also a 1938 letter from Castelnuovo to Segre that contains a paragraph assessing Severi's contributions to algebraic
geometry focusing mainly on the first, probably most prolific, years of his research career. This talk discussed these two
letters together with some background on the temperament and politics of these two personalities, who could not have
been more different.
Hilbert and the Origin Myth of Modern Mathematics
Colin McLarty, Case Western Reserve University, USA
One small puzzling proof by David Hilbert in 1888 became the paradigm of modern axiomatic mathematics, and Hilbert
knew its importance. With time the affair grew into an origin myth, a titanomachy where new gods defeat the old, and
specifically Hilbert defeats one Professor Paul Gordan who is known today for rejecting Hilbert's proof and calling it "not
Mathematics but Theology!" In fact, Hilbert found his proof in conversation with this very Prof. Gordan, and Gordan
supported it from the start. The talk traces the growth of the legend over 60 years from the original proof until the story
was canonized in no less than three versions by Eric Temple Bell.
Speakers in the afternoon session from left to right: Steven Weintraub, Roger Cooke, Renaud Chorlay, Peggy Kidwell, George Smith, Judith Goodstein, Tom Drucker, and Kathryn James.
