Log24

  Some wrestle on the sands, and some in play
  And games heroic pass the hours away.
  Those raise the song divine, and these advance
  In measur'd steps to form the solemn dance.

Bulletin of the
American Mathematical Society,
July 2006 (pdf):

"But however you classify the branch of mathematics it is concerned with, Diophantus’s Arithmetica can claim the title of founding document, and inspiring muse, to modern number theory. This brings us back to the goddess with her lyre in the frontispiece, which is the cover of this issue. As is only fitting, given the passion of the subject, this goddess is surely Erato, muse of erotic poetry."

Mazur has admitted, at his website, that this conclusion was an error:

"I erroneously identified the figure on the cover as Erato, muse of erotic poetry, but it seems, rather, to be Orpheus."

"Seems"? 

The inscription on the frontispiece, "Obloquitur numeris septem discrimina vocum," is from a description of the Elysian Fields in Virgil's Aeneid, Book VI:

  His demum exactis, perfecto munere divae,
  Devenere locos laetos, & amoena vireta
  Fortunatorum nemorum, sedesque beatas.
  Largior hic campos aether & lumine vestit
  Purpureo; solemque suum, sua sidera norunt.
  Pars in gramineis exercent membra palaestris,
  Contendunt ludo, & fulva luctanter arena:
  Pars pedibus plaudunt choreas, & carmina dicunt.
  Necnon Threicius longa cum veste sacerdos
  Obloquitur numeris septem discrimina vocum:
  Jamque eadem digitis, jam pectine pulsat eburno.

PITT:

  These rites compleat, they reach the flow'ry plains,
  The verdant groves, where endless pleasure reigns.
  Here glowing AEther shoots a purple ray,
  And o'er the region pours a double day.
  From sky to sky th'unwearied splendour runs,
  And nobler planets roll round brighter suns.
  Some wrestle on the sands, and some in play
  And games heroic pass the hours away.
  Those raise the song divine, and these advance
  In measur'd steps to form the solemn dance.
  There Orpheus graceful in his long attire,
  In seven divisions strikes the sounding lyre;
  Across the chords the quivering quill he flings,
  Or with his flying fingers sweeps the strings.

DRYDEN:

  These holy rites perform'd, they took their way,
  Where long extended plains of pleasure lay.
  The verdant fields with those of heav'n may vie;
  With AEther veiled, and a purple sky:
  The blissful seats of happy souls below;
  Stars of their own, and their own suns they know.
  Their airy limbs in sports they exercise,
  And on the green contend the wrestlers prize.
  Some in heroic verse divinely sing,
  Others in artful measures lead the ring.
  The Thracian bard surrounded by the rest,
  There stands conspicuous in his flowing vest.
  His flying fingers, and harmonious quill,
  Strike seven distinguish'd notes, and seven at once they fill.

It is perhaps not irrelevant that the late Lorraine Hunt Lieberson's next role would have been that of Orfeo in Gluck's "Orfeo ed Euridice."  See today's earlier entries.

The poets among us may like to think of Mazur's own role as that of the lyre: