As a non-mathematician, I’m more interested in the history of mathematics than in math itself. That’s a confession of inadequacy, though I’m not one of those people who says, “I don’t have a head for math,” when what they really mean is arithmetic. Because of my job I’ve learned to ask a lot of questions of the math people, and then fake it. But I have read biographies of Euler, Ramanujan and Erdös.
I first
learned of the French mathematician and polymath Henri Poincaré
(1854-1912) in 1974 from a book I’m almost embarrassed to admit having read – Zen and the Art of Motorcycle Maintenance by
Robert Pirsig, who paraphrases Poincaré as saying that mathematics “isn’t
merely a question of applying rules, any more than science.”
At the time
of his death in 2009, Turner Cassity left several manuscripts of poems
unpublished. Thanks to the poet R.L. Barth, Cassity’s literary executor, I have a copy
of Hitler’s Weather. One of its thirty-seven
poems is “Reality Check” (Cassity loved playing with clichés), which is
preceded by an epigraph from Poincaré’s The
Value of Science (1905; trans. George Bruce Halsted, 1907): “What we call
objective reality is, in the last analysis, what is common to many thinking
beings, and could be common to all . . .” The poem:
Reality is
for the nonce in hock
“Not to the
common but the commonplace:
The
knee-jerk psyche and the clear-cut case.
“It may be
ambiguity is real
In ways its either and its or conceal;
“That doubt
and certainty are most alike
As credos,
in that their excesses spike
“In the
vicinity of all last things:
Eastern
religions and their vaporings,
“Doom-sayings
of the astrophysicists.
Objective
cites the object that exists,
“Delimits
it. Idolatry makes sense
In ways that
animism gives offense.
“Come,
Thinkers, let us raise, of wood and stone,
A pantheon
of the entirely known.
“Not Faust,
we do not need all knowledge. Some,
And even
that may do us grievous harm.”
This smacks
of a funnier, more cynical John Keats, with his notion of “negative capability,” a
thinker’s capacity for being “capable of being in uncertainties, Mysteries,
doubts, without any irritable reaching after fact and reason.” Consider the
rest of Poincaré’s passage:
“. . . this
common part, we shall see, can only be the harmony expressed by mathematical
laws. It is this harmony then which is the sole objective reality, the only
truth we can attain; and when I add that the universal harmony of the world is
the source of all beauty, it will be understood what price we should attach to
the slow and difficult progress which little by little enables us to know it
better.”
The Keatsian
echoes continue. The poet and scholar J.V. Cunningham, like Cassity a student
of Yvor Winters at Stanford, taught mathematics to pilots at the Seventh Army
Air base in California, during World War II. Among his later
epigrams is “Cantor’s Theorem: In an Infinite Class the Whole Is No Greater
Than Some of Its Parts”:
“Euclid,
alone, who looked in beauty’s heart,
Assumed the
whole was greater than the part;
But Cantor,
with the infinite in control,
Proved that
the part was equal to the whole.”
In his
two-paragraph note in The Poems of J.V.
Cunningham (Swallow Press/Ohio University Press, 1997), Timothy Steele
succinctly explains the math – “. . . infinite sets may simultaneously
correspond and differ” – and helpfully refers us to Joseph Warren Daubens’ Georg Cantor: His Mathematics and Philosophy
of the Infinite (Princeton University Press, 1979). This overlap (or Venn
diagram) of poetry and mathematics shouldn’t surprise us. At the risk of
oversimplifying things, here’s an equation: Math = Music = Poetry. Paul Erdös was
fond of saying: “If numbers aren’t beautiful, I don’t know what is.”
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