Mathematics of 2-Dimensional Lattices
A periodic lattice in Euclidean space is the infinite set of all integer linear combinations of basis vectors. Any lattice can be generated by infinitely many different bases. This ambiguity was partially resolved, but standard reductions remain discontinuous under perturbations modelling atomic dis...
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| Veröffentlicht in: | Foundations of computational mathematics 2024-06, Vol.24 (3), p.805-863 |
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| creator | Kurlin, Vitaliy |
| description | A periodic lattice in Euclidean space is the infinite set of all integer linear combinations of basis vectors. Any lattice can be generated by infinitely many different bases. This ambiguity was partially resolved, but standard reductions remain discontinuous under perturbations modelling atomic displacements. This paper completes a continuous classification of 2-dimensional lattices up to Euclidean isometry (or congruence), rigid motion (without reflections), and similarity (with uniform scaling). The new homogeneous invariants allow easily computable metrics on lattices considered up to the equivalences above. The metrics up to rigid motion are especially non-trivial and settle all remaining questions on (dis)continuity of lattice bases. These metrics lead to real-valued chiral distances that continuously measure lattice deviations from higher-symmetry neighbours. The geometric methods extend the past work of Delone, Conway, and Sloane. |
| doi_str_mv | 10.1007/s10208-022-09601-8 |
| format | Article |
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| subjects | Applications of Mathematics Computer Science Congruences Economics Euclidean geometry Lattices Linear and Multilinear Algebras Math Applications in Computer Science Mathematics Mathematics and Statistics Matrix Theory Numerical Analysis |
| title | Mathematics of 2-Dimensional Lattices |
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