ISOMETRICA

A GEOMETRICAL INTRODUCTION TO

PLANAR CRYSTALLOGRAPHIC GROUPS


in memory of Professor Rinaldo Prisco




Fig. 28 Intersecting glide llines

[Arthur L. Loeb, Color and Symmetry (Wiley 1971, Krieger 1978)]


GEORGE BALOGLOU

SUNY OSWEGO, 2007

ISBN 978-0-9792076-0-0



p6m reduced to p31m' by coloring




In the course of his inexplicable existence

But when am I going to feel that its darkness

man bequeathed to his descendants multiple evidence

is full of signs,

worthy of his immortal origin

that I know nothing about its soul's journeys

As he also bequathed vestiges of the dawn's remnants,

into the magic, the profound, the luminous,

snowballing celestial reptiles, kites, diamonds

the impossible

and glances of hyacinths

From Zelda Schneurson-Mishkovsky's "In an old School for the Blind"

Amidst moans, tears, famine, lamentations

(and/or Amos Oz's "A Tale of Love and Darkness")

and cinder of subterranean wells


From Nikos Gatsos' "Amorgos"

isometry 
in Aristotle and in Birkhoff & Maclane
Library of Congress TXu1-354-887