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#79 by Michael De Vlieger at Tue Aug 08 22:22:44 EDT 2023
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#78 by Jon E. Schoenfield at Tue Aug 08 21:03:16 EDT 2023
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#77 by Jon E. Schoenfield at Tue Aug 08 21:03:14 EDT 2023
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| LINKS
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E. I. Vatutin, <a href="http://evatutin.narod.ru/evatutin_dls_spec_types_list.pdf">Special types of diagonal Latin squares</a>, Cloud and distributed computing systems in electronic control conference, within the National supercomputing forum (NSCF — - 2022). Pereslavl-Zalessky, 2023. pp. 9-18. (in Russian)
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approved
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#76 by Michael De Vlieger at Sun Jul 09 08:32:25 EDT 2023
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#75 by Michel Marcus at Sun Jul 09 06:01:54 EDT 2023
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#74 by Eduard I. Vatutin at Sun Jul 09 05:50:39 EDT 2023
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#73 by Eduard I. Vatutin at Sun Jul 09 05:50:31 EDT 2023
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| LINKS
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E. I. Vatutin, <a href="http://evatutin.narod.ru/evatutin_dls_spec_types_list.pdf">Special types of diagonal Latin squares</a>, Cloud and distributed computing systems in electronic control conference, within the National supercomputing forum (NSCF — 2022). Pereslavl-Zalessky, 2023. pp. 9-18. (in Russian)
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approved
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#72 by Susanna Cuyler at Mon May 31 18:50:18 EDT 2021
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#71 by Andrew Howroyd at Mon May 31 18:33:15 EDT 2021
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#70 by Andrew Howroyd at Mon May 31 18:32:49 EDT 2021
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| COMMENTS
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DoublyA doubly symmetric square has symmetries both in both horizontal and vertical planes.
The plane symmetry requires one-to-one correspondence between the values of elements a[i][,j] and a[N+1-i][,j] in a vertical plane, and between the values of elements a[i][,j] and a[i][,N+1-j] in a horizontal plane for 1 <= i,j <= N. - Eduard I. Vatutin, Alexey D. Belyshev, Oct 09 2017
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