where [S.sub.11-m](f) represents the measured scattering parameters of the fabricated antenna and E/O represents the even

symmetry operation of the magnitude spectrum and the odd

symmetry operation of the phase spectrum.

These twins occur in cases where the motif has less symmetry than the lattice; the twin is formed when the motif is rotated by a

symmetry operation of the lattice but not of the motif.

Pauling says he had been taught in 1929 the basic

symmetry operation that helped him discover this structure, but for some reason, he says, it wasn't until that day in 1948 that it entered his mind.

Molecular symmetry and group theory are introduced, and vibrational spectroscopy is examined in the context of

symmetry operations. Covalent, metallic, and ionic bonding are then treated in separate chapters, followed by extension of bonding properties to make inferences about structure and reactivity.

Employing the screw symmetry operations, helical method gives rise to preserving direct relation between BS of 2D-hP parent structure and tubular BS.

In this special case, through the point symmetry operations, the rotational symmetry can be incorporated as well [41].

However, several

symmetry operations of 2O would be absent.

In this context, for any kind of pattern that is used in a quilt design, there are four basic

symmetry operations that may be performed upon a fundamental region or plane.

The M+M program is designed to enhance our natural ability to think in pictures, and emphasizes challenging math problems, particularly fraction models; graphing; p]ace value; pre-algebra; ratio and proportion; shape visualization, patterns, ordering and congruency; and

symmetry operations, rotations and unfolding.

I have now two sets of 240 icosians each forming [E.sub.8] lattices in [R.sup.8], each obeying the

symmetry operations of the finite group Weyl [E.sub.8].