92
98
see matrix group
see matrix group
see matrix group
see atrix group
see matrix group
see matrix groups
matrix = column matrix consisting of n elements 90
matrix = matrix consisting of n rows and n columns 13
-Bravais class of (3+1)-dimensional point lattices 552
-class = restricted arithmetic class 552
-equivalent point lattices 552
-equivalent restricted Bravais groups 552
see matrix groups
see matrix groups
see matrix groups
see matrix groups
see matrix groups
see matrix groups
see matrix groups
95
-symmetry groups 360
symmetry groups 360
= set of all complex numbers 51 Npr
= set of all rational numbers Npr
-equivalence class of matrix groups 81
= set of all real numbers Npr; 52
= set of all integers (positive, zero, and negative) Npr
-class = arithmetic class 82
-class of integral matrix groups 81 219
-equivalent (= arithmetically equivalent) integral matrix groups 82 219
-groups of space-time rotations 168 173 T6.8
-groups of space-time rotations 168 173 T6.8
-groups of space-time rotations 168 173 T6.8
-class of (3+1)-dimensional superspace groups 556
-equivalent matrix groups 78 79
195 201
88
isomorphism 115
23
\gamma$ 23
110
121
-equivalent groups of isometries where 3 is a subgroup of an affine group 122 T4.2
121
108
117
115
121
165
148 165
165
166
148
149
116 148
166
117
121
111
165
-groups of space-time rotations 168 173 T6.9
-part of an element of the Newton group 168
-group of rotations 156
-subgroup 156 403
-group of rotations 156
-subgroup 60 156
-group of rotations 156
-subgroup 60 156
Abelian group 11
Abstract group 14
Action of a group on a function space 44 351
Action of a group on a set 44
Action of a group — group action: (A1'') 532
Action of a group — group action: (A1') 531
Action of a group — group action: (A1) 350
Action of a group — group action: (A10) 390
Action of a group — group action: (A12E), (A12I), (A12E'), (A12I') 391
Action of a group — group action: (A13E), (A13I), (A13E'), (A13I') 391
Action of a group — group action: (A14E), (A14I), (A14E'), (A14I') 392
Action of a group — group action: (A15E), (A15I), (A15E'), (A15I') 392
Action of a group — group action: (A16) 401
Action of a group — group action: (A16s) 476
Action of a group — group action: (A17) 409
Action of a group — group action: (A1c) 363
Action of a group — group action: (A2) 351
Action of a group — group action: (A3) 353
Action of a group — group action: (A3bc) 385
Action of a group — group action: (A3c) 363
Action of a group — group action: (A4) 354
Action of a group — group action: (A5) 355
Action of a group — group action: (A5c) 383
Action of a group — group action: (A6) 388
Action of a group — group action: (A7s) 388
Action of a group — group action: (A7t) 388
Action of a group — group action: (A8st) 388
Action of a group — group action: (A8t) 388
Action of a group — group action: (A9) 390
Action of a group — group action: (All) 391
Action of the Newton group on a function of space-time 387
Active interpretation of a matrix equation 107
Additive group of complex numbers 51
Additive group of integers 16
Additive group of real numbers 51
Additive notation for products of elements of an Abelian group 15 88
Adjoint matrix group 77
Adjoint of a matrix 76
Admissible site for a subgroup of a group of isometries 294
Admissible spin at a point 478
Affine class (= geometric class) of groups of rotations of a plane 163
Affine class (= geometric class) of groups of rotations of space 154 156 157 T6.1
Affine class (= geometric class) of groups of rotations of space-time 169 173
Affine class of groups of isometries 122 130 T4.2
Affine class of groups of rotations of space 125 157 T6.1
Affine class of infinite axial groups of rotations of space 159 T6.6
Affine class of infinite axial groups of the space-time rotations 159 T6.11
Affine class of magnetic groups 405
Affine group of an affine space 103 110
Affine normalizer of a space group 283
Affine point space 8 92
Affine properties of lattice groups 205
Affine space underlying a Euclidean point space 98
Affine transformation of an affine point space 110 113
Affine vector space 95
Affine vector space underlying a Euclidean vector space 95
Affinely equivalent (= equivalent) groups of isometries 122 T4.2
AL(n+1) 114
Algebraic structure 8 9
Almost-Euclidean-equivalent space groups 283
Alternating group 34
Alternating representation of a group 30
Alternating representation theorem 30 N13.3 N17.2
Angle between two lines 98
Angle between two translations 116
Angle between two vectors 95
Angle, irrational 161
Angle, rational 161
Anti-identification 358
Anti-inversion 358
Anti-rotation 358
Antiferromagnetic helical spin arrangement 489
Antiferromagnetic solid 490
Antiferromagnetic spin arrangement 483
Antiferromagnetic spin lattice 420
Antilinear transformation 523
Antisymmetry 358 N12.5
Antisymmetry group 360
Antiunitary transformations of a vector space 527
Arithmetic approach to the theory of space groups 198 N8.5
| Arithmetic class (= -class) of finite subgroups of 227
Arithmetic class (= -class) of integral matrix groups 82 219
Arithmetic class (= -class) of matrix groups 219
Arithmetic class (= -class) of space groups 263 266 T9.1.3 T9.2.2 T9.2.3
Arithmetically equivalent (= -equivalent) integral matrix groups 82 219
Associativity of multiplication of elements of a group 10
Asterisk-equivalent (*-equivalent) line groups 331
Asymmorphic space group N9.3
Atom complex — point complex 291
Atom lattice = point lattice 196 290
Atom lattice with a basis 291
Atom-complex lattice 291
Atom-site array corresponding to the left-coset array for a site group 291 T10.1.1
Augmented matrix 114 132 N4.3
Augmented-matrix representation of a subgroup of an affine group 114
Augmented-matrix representation of an affine group 114
Aut G 45
Automorphism induced by an element of a group 46
Automorphisms of 78
Automorphisms of a group 24 44
Automorphisms of a lattice group 204
Automorphisms of a magnetic lattice group 419
Automorphisms of an algebraic structure 103
Automorphisms of cyclic groups 47
Automorphisms of dihedral groups 48 T2.1.1 T2.1.2
Automorphisms of space groups 282
Automorphisms of the field of complex numbers 52
Automorphisms of the field of real numbers 52
Automorphisms of the space-time group induced by the automorphism of the space-time inversion group 170
Average spin of a spin arrangement 483
Axial group of rotations 159
Axial point group of a space group 250
Axial vector 392
Axial vector function 392
Axis of a coordinate system 93
Axis of a group of proper rotations about a line in space 150
Axis of a helical group 333
Axis of a proper rotation of space 149 155
Axis of a rotatory inversion 151
Axis of an axial group of rotations 159
Basic space group of a (3+1)-dimensional superspace group 549
Basis of a Euclidean vector space 96
Basis of a lattice group 203
Basis of a point lattice 203
Basis of a t-dimensional lattice group 195 201
Basis of a vector space 89
Basis vector 89
Bieberbach's Theorems 196 262 N7.9
Bijection 5
Black-and-white group = two-colour group 62 313 354 374
Bracket symbol of a permutation 31
Bravais class of antiferromagnetic spin lattices 426
Bravais class of d-colour lattice groups 373
Bravais class of d-coloured point lattices 373
Bravais class of ferromagnetic spin lattices 426
Bravais class of lattice groups 214
Bravais class of magnetic lattice groups 402 423 T16.3 T16.4 N16.5
Bravais class of magnetic point lattices 423 T16.3 T16.4
Bravais class of point lattices 214 229 T8.2 T8.3
Bravais class of space groups 263 269
Bravais class of spin lattice groups 517
Bravais classification (= classification into Bravais classes) of lattice groups 205 215
Bravais classification (= classification into Bravais classes) of point lattices 205 214 215
Bravais classification (= classification into Bravais classes) of space groups 269
Bravais flock of affine classes of space groups 269
Bravais flock of arithmetic classes of finite integral matrix groups 227
Bravais flock of arithmetic classes of space groups 268
Bravais flock of proper arithmetic classes of finite integral matrix groups 227
Bravais flock of space groups 263
Bravais group 218
Bravais group of a magnetic point lattice for a magnetic basis 422
Bravais group of a point lattice 220
Bravais group of a point lattice for its basis 217
Bravais lattice = point lattice 197
Bravais space group 218 219 269 T9.2.1
Bravais subclass of a proper affine class of space groups 263 269
Bravais superspace group ((3 + l)-dimensional) 552 T22.1
Bravais system of lattice groups 239
Bravais system of magnetic lattice groups 429
Bravais system of magnetic lattices 429
Bravais system of point lattices 239 240 T8.2 T8.3
Bravais system of space groups = Bravais-fiock system of space groups 277
Bravais type (= Bravais class) of lattice groups 215
Bravais type (= Bravais class) of point lattices 215
Bravais unit cell N8.5
Bravais' definition of Bravais classes of point lattices Npr
Bravais-flock system 240 277
Bravais-flock system (= Bravais system) of affine classes of space groups 269 277 T9.1.3
Bravais-flock system (= Bravais system) of arithmetic classes of space groups 268 277
Bravais-flock system (= Bravais system) of space groups 277
Brillouin zone (first) N8.8
Cambiant symmetry 360
Carrier space invariant under a group 138
Carrier space of a corepresentation 525
Carrier space of a matrix representation of a group 131 139
Carrier space of a representation 131
Carrier space splitting into a direct sum of invariant subspaces 138
Carrier space, irreducible 138
Cartesian coordinate system 98
Cartesian coordinates of a point 98
Cartesian product of two sets 4
Cayley's theorem 49
Centralizer of a subgroup 25
Centre of a group 20
Centre of inversion 150 152
Centred point lattices N8.2
Centring a point lattice 234
Chain macromolecule 196
Change-of-basis formulae 91
Change-of-coordinate system formulae 94 99
Character of a matrix representation 136
Character of an element of a group in its matrix representation 136
Characteristic crystallographic orbit for a space group N10.4
Characteristic equation of a matrix 76
Characteristic subgroup 47
Characteristic subgroup of a lattice group 419
Characteristic values (= eigenvalues) of a matrix 76
Cheshire group = Euclidean nonnalizer of a space group N9.9
Class (= equivalence class) of conjugate elements of a group 26
Class (= equivalence class) of conjugate permutations 34
Class (= equivalence class) of conjugate subgroups 26
Class (= equivalence class) of magnetic space groups = proper affine class of magnetic space groups 452
Class (= equivalence class) of parallel point sets 190
Class (= equivalence class) of positive definite symmetric matrices determined by a point lattice 208
Class (= equivalence class) of positive definite symmetric quadratic forms determined by a point lattice 207
Class (= equivalence class) of rotation groups associated with a space group 250
Class (= equivalence class) of simple point sets for a group of isometries 293 294
Class = equivalence class 8
Class-equivalent subgroup (= R-subgroup) of a space group 261
Classification label of a geometrical crystal (CLG) 292
Classification label of a physical crystal (CLP) 351 382 490
Classification labels of a NaCl crystal 382
Classification labels of spin arrangements 481 487 510
Classification labels of the spin arrangements in 492
Classification of coloured polyhedra N13.7
Classification of the elements of a set 8
Classification of the non-isomorphic non-symmorphic space groups 456 T17.2
Classifications of space groups 262 263 264 276 277
Coholohedral lattice of an R-subgroup of a space group 444
Coholohedral subgroup of a lattice group 422 444
Coholohedral subgroup of a space group 444
Coholohedral sublattice of a lattice 422
Collinear antiferromagnetic spin arrangement 483
Colour function = coloured point set 353 363 375
Colour group 73 353 360 364 N12.9
Colour group of rotations 364 370
Colour groups compared to non-trivial spin groups 515 517
Colour lattice group 364 373
Colour of a point 363
Colour set 363
|