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Figure 5
Overlap of the two patterns in Figs. 3[link] and 4[link]. The dichromatic cat indicates the overlap in projection of two cats related by a second-kind operation; the cat closer to the observer has been cut in half, leaving only the head side; the tail side of the cat farther from the observer is visible. The space group of this compound pattern is obtained by extending Pca21 by the m0yz reflection and is of type P21/c2/a21/m, which is a nonstandard setting of P2/b21/c21/m (No. 57) with axial transformation −b, a, c + [\textstyle{{1}\over{4}}].

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 48| Part 6| December 2015| Pages 1985-1997
doi:10.1107/S1600576715020749
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