Geographic style maps for two-dimensional lattices

Bright, M.; Cooper, A.I.; Kurlin, V.

doi:10.1107/S2053273322010075

Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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Figure 13
Top: in QT⁺, the Greenwich line goes from the `empty' point (1,0) through incentre P⁺ to the point $[G = (0, \sqrt{2} - 1)]$ . Middle: the hemisphere HS⁺ has the north pole at P⁺, the equator ∂QT⁺ of mirror-symmetric lattices. Bottom: the longitude μ ∈ (−180°, + 180°] anticlockwise measures angles from the Greenwich line, the latitude φ ∈ [−90°, + 90°] measures angles from the equator to the north pole.

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ISSN: 2053-2733

Volume 79| Part 1| January 2023| Pages 1-13

https://doi.org/10.1107/S2053273322010075

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