Wednesday, June 29, 2005 7:00 PM
Meditation for St. Peter's DayWednesday, June 29, 2005 12:00 PM
Wednesday, June 29, 2005 10:45 AM
Monday, June 27, 2005 1:09 PM
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Monday, June 27, 2005 3:26 AM
Monday, June 27, 2005 12:00 AM
Into the DarkAfter the Long Night
Sunday, June 26, 2005 7:26 PM
Thanks for the MemorySaturday, June 25, 2005 12:00 AM
Bright Star and Dark Lady "Mexico is a solar country -- but it is also a black country, a dark country. This duality of Mexico has preoccupied me since I was a child." -- Octavio Paz, | ||
Bright Star | Amen.
| Dark Lady |
Friday, June 24, 2005 4:07 PM
Thursday, June 23, 2005
3:00 PM
Mathematics and Metaphor
The current (June/July) issue of the Notices of the American Mathematical Society has two feature articles. The first, on the vulgarizer Martin Gardner, was dealt with here in a June 19 entry, Darkness Visible. The second is related to a letter of André Weil (pdf) that is in turn related to mathematician Barry Mazur's attempt to rewrite mathematical history and to vulgarize other people's research by using metaphors drawn, it would seem, from the Weil letter.
A Mathematical Lie
conjectures that Mazur's revising of history was motivated by a desire
to dramatize some arcane mathematics, the Taniyama conjecture, that
deals with elliptic curves and modular forms, two areas of mathematics
that have been known since the nineteenth century to be closely
related.
Mazur led author Simon Singh to believe that these
two areas of mathematics were, before Taniyama's conjecture of 1955,
completely unrelated --
"Modular forms and elliptic
equations live in completely different regions of the mathematical
cosmos, and nobody would ever have believed that there was the remotest
link between the two subjects." -- Simon Singh, Fermat's Enigma, 1998 paperback, p. 182
This is false. See Robert P. Langlands, review of Elliptic Curves, by Anthony W. Knapp, Bulletin of the American Mathematical Society, January 1994.
It now appears that Mazur's claim was in part motivated by a desire to
emulate the great mathematician André Weil's manner of speaking; Mazur
parrots Weil's "bridge" and "Rosetta stone" metaphors --
From Peter Woit's weblog, Feb. 10, 2005:
"The focus of Weil's letter is the analogy between number fields and
the field of algebraic functions of a complex variable. He describes
his ideas about studying this analogy using a third, intermediate
subject, that of function fields over a finite field, which he thinks
of as a 'bridge' or 'Rosetta stone.'"
In "A 1940 Letter of André Weil on Analogy in Mathematics," (pdf), translated by Martin H. Krieger, Notices of the A.M.S., March 2005, Weil writes that
"The purely algebraic theory of algebraic functions in any arbitrary
field of constants is not rich enough so that one might draw useful
lessons from it. The 'classical' theory (that is, Riemannian) of
algebraic functions over the field of constants of the complex numbers
is infinitely richer; but on the one hand it is too much so, and in the
mass of facts some real analogies become lost; and above all, it is too
far from the theory of numbers. One would be totally obstructed if
there were not a bridge between the two. And just as God defeats the devil: this bridge exists; it is the theory of the field of algebraic functions over a finite field of constants....
On the other hand, between the function fields and the 'Riemannian'
fields, the distance is not so large that a patient study would not
teach us the art of passing from one to the other, and to profit in the
study of the first from knowledge acquired about the second, and of the
extremely powerful means offered to us, in the study of the latter,
from the integral calculus and the theory of analytic functions. That
is not to say that at best all will be easy; but one ends up by
learning to see something there, although it is still somewhat
confused. Intuition makes much of it; I mean by this the faculty of
seeing a connection between things that in appearance are completely
different; it does not fail to lead us astray quite often. Be that as
it may, my work consists in deciphering a trilingual text {[cf. the Rosetta Stone]};
of each of the three columns I have only disparate fragments; I have
some ideas about each of the three languages: but I know as well there
are great differences in meaning from one column to another, for which
nothing has prepared me in advance. In the several years I have worked
at it, I have found little pieces of the dictionary. Sometimes I worked
on one column, sometimes under another."
Here is another statement of the Rosetta-stone metaphor, from Weil's translator, Martin H. Krieger, in the A.M.S. Notices of November 2004, "Some of What Mathematicians Do" (pdf):
"Weil refers to three columns, in analogy with the Rosetta Stone’s
three languages and their arrangement, and the task is to 'learn to
read Riemannian.' Given an ability to read one column, can you find
its translation in the other columns? In the first column are
Riemann’s transcendental results and, more generally, work in analysis
and geometry. In the second column is algebra, say polynomials with
coefficients in the complex numbers or in a finite field. And in the
third column is arithmetic or number theory and combinatorial
properties."
For greater clarity, see Armand Borel (pdf) on Weil's Rosetta stone,
where the three columns are referred to as Riemannian (transcendental),
Italian ("algebraico-geometric," over finite fields), and arithmetic
(i.e., number-theoretic).
From Fermat's Enigma, by Simon Singh, Anchor paperback, Sept. 1998, pp. 190-191:
Barry
Mazur: "On the one hand you have the elliptic world, and on the other
you have the modular world. Both these branches of mathematics had
been studied intensively but separately.... Than along comes the
Taniyama-Shimura conjecture, which is the grand surmise that there's a bridge between these two completely different worlds. Mathematicians love to build bridges."
Simon Singh: "The value of mathematical bridges
is enormous. They enable communities of mathematicians who have been
living on separate islands to exchange ideas and explore each other's
creations.... The great potential of the Taniyama-Shimura conjecture
was that it would connect two islands and allow them to speak to each
other for the first time. Barry Mazur thinks of the Taniyama-Shimura
conjecture as a translating device similar to the Rosetta stone.... 'It's as if you know one language and this Rosetta stone
is going to give you an intense understanding of the other language,'
says Mazur. 'But the Taniyama-Shimura conjecture is a Rosetta stone with a certain magical power.'"
If Mazur, who is scheduled to speak at a conference on Mathematics and Narrative this July, wants more material on stones with magical powers, he might consult The Blue Matrix and The Diamond Archetype.
Tuesday, June 21, 2005
4:24 PM
Art History
"I studied with Reinhardt and I found that a fantastic course. I think he was really very stimulating....
Art history was very personal through the eyes of Ad Reinhardt."
-- Robert Morris,
Smithsonian Archives of American Art
Related material:
"The Road to Simplicity Followed by Merton’s Friends: Ad Reinhardt and Robert Lax" in The Merton Annual 13 (2000) 245-256, by Paul J. Spaeth, library director at St. Bonaventure University
"Make Mass beautiful silence like big black picture speaking requiem. Tears in the shadows of hermit hatch requiems blue black tone. Sorrows for Ad in the oblation quiet peace request rest. Tomorrow is solemns in the hermit hatch for old lutheran reinhardt commie paintblack… Tomorrow is the eternal solemns and the barefoots and the ashes and the masses, oldstyle liturgy masses without the colonels… Just old black quiet requiems in hermit hatch with decent sorrows good by college chum."
-- from J. S. Porter, "Farewell to a Monk,"
Antigonish Review, Winter 1997
Sunday, June 19, 2005
4:00 AM
Fade to Black "...that ineffable constellation of talents that makes the player of rank: a gift for conceiving abstract schematic possibilities; a sense of mathematical poetry in the light of which the infinite chaos of probability and permutation is crystallized under the pressure of intense concentration into geometric blossoms; the ruthless focus of force on the subtlest weakness of an opponent." -- Trevanian, Shibumi "'Haven't there been splendidly elegant colors in Japan since ancient times?' 'Even black has various subtle shades,' Sosuke nodded." -- Yasunari Kawabata, The Old CapitalAn Ad Reinhardt painting Ad Reinhardt, The viewer may need to tilt "The grid is a staircase to the Universal.... We could think about Ad Reinhardt, who, despite his repeated insistence that 'Art is art,' ended up by painting a series of... nine-square grids in which the motif that inescapably emerges is a Greek cross. ![]() Greek Cross There is no painter in the West who can be unaware of the symbolic power of the cruciform shape and the Pandora's box of spiritual reference that is opened once one uses it." -- Rosalind Krauss, |
Friday, June 17, 2005
4:01 PM
Five Easy Pieces
for Lee Marvin's Birthday
1. | "EVERYTHING'S a story. | |
2. | "You see that sign, sir?" | |
3. | | |
4. |
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5. |
Thursday, June 16, 2005
2:02 PM