VW - CVM 1.1

Functions having Mirrors but no Positive Rotations

Table: Symmetry types in rectangular cell without positive rotations

type	G	E	Recipe for this type and remarks
pm'	p1	pm	sin(mY) terms only; M negative
pm	pm	pm	cos(mY) terms only; M positive
p'b1m	pm	pm	cos(mY) terms only and n odd; L negative; new cell half of old
p'bm	pm	pm	cos(mY) terms only and m odd; A negative; new cell half of old
p'cm	pm	cm	cos(mY) terms only and n + m odd; B negative; new cell half of old
pmm'	pm	pmm	sin(nY) cos(mY) terms only; Mv and R negative
pmg'	pm	pmg	n odd with sin(nX) cos(mY) terms n even with cos(nX) sin(mY) terms; L and R negative; B positive

Functions Invariant under Positive Rotations The Rhombic Lattice The Rectangular Lattice Recipes for Negation Functions having No Positive Mirrors or Rotations