Month: October 2002







  • Plato’s
    Diamond



    From The Unknowable (1999), by Gregory J. Chaitin, who has written extensively about his constant, which he calls Omega:



    “What is Omega? It’s just the diamond-hard distilled and crystallized essence of mathematical truth! It’s what you get when you compress tremendously the coal of redundant mathematical truth…” 


    Charles H. Bennett has written about Omega as a cabalistic number.


    Here is another result with religious associations which, historically, has perhaps more claim to be called the “diamond-hard essence” of mathematical truth: The demonstration in Plato’s Meno that a diamond inscribed in a square has half the area of the square (or that, vice-versa, the square has twice the area of the diamond).


    From Ivars Peterson’s discussion of Plato’s diamond and the Pythagorean theorem:



    “In his textbook The History of Mathematics, Roger Cooke of the University of Vermont describes how the Babylonians might have discovered the Pythagorean theorem more than 1,000 years before Pythagoras.


    Basing his account on a passage in Plato’s dialogue Meno, Cooke suggests that the discovery arose when someone, either for a practical purpose or perhaps just for fun, found it necessary to construct a square twice as large as a given square….”


    From “Halving a Square,” a presentation of Plato’s diamond by Alexander Bogomolny, the moral of the story:



    SOCRATES: And if the truth about reality is always in our soul, the soul must be immortal….


    From “Renaissance Metaphysics and the History of Science,” at The John Dee Society website:


    Galileo on Plato’s diamond:



    “Cassirer, drawing attention to Galileo’s frequent use of the Meno, particularly the incident of the slave’s solving without instruction a problem in geometry by ‘natural’ reason stimulated by questioning, remarks, ‘Galileo seems to accept all the consequences drawn by Plato from this fact…..’”


    Roger Bacon on Plato’s diamond:



    “Fastening on the incident of the slave in the Meno, which he had found reproduced in Cicero, Bacon argued from it ‘wherefore since this knowledge (of mathematics) is almost innate and as it were precedes discovery and learning or at least is less in need of them than other sciences, it will be first among sciences and will precede others disposing us towards them.’”


    It is perhaps appropriate to close this entry, made on All Hallows’ Eve, with a link to a page on Dr. John Dee himself.

  • Our Judeo-Christian Heritage:


    Two Sides of the Same Coin









    On this date in 1897, Joseph Goebbels was born. Related reading:


    The Calvin College Propaganda Archive and


    Prince Ombra.



    Cabaret



    Joseph Goebbels








  • Morte
    d’Arthur


    From On All Hallows’ Eve, by Grace Chetwin:



    “Please continue your account of Morgan le Fay.”


    “People think of her as bad. They say that she tried to murder her brother, King Arthur of the Round Table…. But she did good things too. She gave Arthur his sword, Excalibur, and, well, when he lay dying, she and two other queens took him onto their barge and bore him from the world to heal his wounds and make him whole again. It was ‘… a dusky barge, Dark as a funeral scarf from stem to stern,’ and the three queens wore ‘crowns of gold’….”


    Greylen smiled. “Very good. You like this Morgan le Fay very much, it is clear.”….


    “I know more than that,” Meg went on quickly. “She is also called Nimue and Vivian, but those names are wrong, too.  Her true name goes right back to the Mabinogion — that’s a really old collection of Welsh bardic tales.  Her real name is Rhiannon….”


    In honor of Grace Chetwin, this site’s music is now a theme more suitable for All Hallows’ Eve.

  • Midnight in the Garden


    From a Nina Simone Lyrics site:


    Pack up all my cares and woe,
    here I go, singing low,
    Bye-bye Blackbird.
    Where somebody waits for me,
    sugar’s sweet, so is she,
    Bye-bye Blackbird.
    No one here can love and understand me.
    Oh, what hard-luck stories they all hand me.
    Make my bed and light the light,
    I’ll arrive late tonight,
    Blackbird, Bye-bye.




    Nina Simone


    For more on the eight-point star of Venus,
    see “Bright Star,” my note of October 23.

  • Wrestling Pablo Picasso

    Aster on a
    Greek Vase

    Picasso by Karsh

    Wrestling Ernest
    Hemingway

    The old men know when an old man dies.
    – Ogden Nash


  • ART WARS:
    Picasso’s Birthday

    From an art quotes website:

    Dore Ashton’s Picasso on Art –

    “We all know that Art is not truth.
    Art is a lie that makes us realize truth,
    at least the truth that is given us
    to understand.” — Pablo Picasso

    From “Xanadu” —

    “You have to believe we are magic.”
    – Olivia Newton-John

    The Muse
    Picasso


    Soul Kiss
    Olivia
    Newton-John

     



    A is for Art

    Cullinane

     
    “A work of art has an author and yet,
    when it is perfect, it has something
    which is essentially anonymous about it.”
    Simone Weil, Gravity and Grace

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  • Trinity

    The last two days were eventful on the obituary front.  See below for a reasonably holy trinity of lives: 



    • Richard Helms as the Father,
    • Derek Bell as the Son, and
    • Adolph Green as the Holy Spirit. 

    See also Bonaventure’s
    Itinerarium Mentis in Deum and



    the graves list for Bonaventure Cemetery in Savannah,
    final resting place for Johnny Mercer and plot key
    to Midnight in the Garden of Good and Evil.

  • Green Music


    From the online New York Times, Oct. 24, 2002:


    Adolph Green, Broadway
    Playwright, Dies at 87

    By RICHARD SEVERO


    Adolph Green, the playwright, performer and lyricist who in a six-decade collaboration with Betty Comden was co-author of such hit Broadway musicals as “On the Town,” “Wonderful Town” and “Bells Are Ringing” and the screenplays for “Singin’ in the Rain” and “The Band Wagon,” died today at his home in Manhattan. He was 87.


    “On the Town” Opens in New York, 1944



    Adolph Green, Betty Comden, Leonard Bernstein




    In honor of Green, of the music of New York City, and of Mrs. Adolph Green, this site’s music is now a piano rendition by Doug McKenzie of ”Some Other Time.” 

  • Death of a Chieftain


    New York Times, Oct. 24:


    Derek Bell, Harpist of the Chieftains, 66, Is Dead









    Derek Bell rehearsing for
    a 1998 St. Patrick’s Day
    concert in New York.


    Derek Bell, the versatile harpist with The Chieftains, one of the most celebrated Irish traditional bands, died on Oct. 15 in his hotel in Phoenix. He was 66 and lived in Belfast.”


    In honor of Bell, this site’s music is,


    for the time being,


    the following classic tune by Turlough O’Carolan,


  • A (Very Brief) Course of
    Modern Analysis 


    In honor of today’s anniversary of the 1873 birth of Edmund Taylor Whittaker, here are some references to a topic that still interests some mathematicians of today.


    From A Course of Modern Analysis, by E. T. Whittaker and G. N. Watson, Fourth Edition, Cambridge University Press, 1927, reprinted 1969:


    Section 20.7  “…the fact, that x and y can be expressed as one-valued functions of the variable z, makes this variable z of considerable importance… z is called the uniformizing variable of the equation…. When the genus of the algebraic curve f(x,y) = 0 is greater than unity, the uniformisation can be effected by means of what are known as automorphic functions. Two classes of such functions of genus greater than unity have been constructed, the first by Weber…(1886), the second by Whittaker…(1898)….”


    The topic of uniformisation of algebraic curves has appeared frequently lately in connection with Wiles’s attack on Fermat’s Last Theorem. See, for instance, Lang’s 1995 AMS Notices article



    “Shimura’s… insight was that the ordinary modular functions for a congruence subgroup of SL2(Z) suffice to uniformize elliptic curves defined over the rationals.”


    and Charles Daney’s notes



    “The property of an elliptic curve [over Q] of being parameterized by modular functions is one way of defining a modular elliptic curve, and the Taniyama-Shimura conjecture asserts that every elliptic curve is modular.”


    For a deeper discussion of uniformisation in the context of Wiles’s efforts, see “Elliptic curves and p-adic uniformisation,” by H. Darmon, 1999.


    For a more traditional approach to uniformisation, see “On the uniformisation of algebraic curves,” by Yu. V. Brezhnev (24 May, 2002), which cites two of Whittaker’s papers on automorphic functions (from 1898 and 1929) and a 1930 paper, “The uniformisation of algebraic curves,” by J. M. Whittaker, apparently E. T. Whittaker’s son.