Enumeration of alternating sign matrices of even size (quasi)-invariant under a quarter-turn rotation
The aim of this work is to enumerate alternating sign matrices (ASM) that are quasi-invariant under a quarter-turn. The enumeration formula (conjectured by Duchon) involves, as a product of three terms, the number of unrestrited ASm's and the number of half-turn symmetric ASM's.
| Principais autores: | , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
Discrete Mathematics & Theoretical Computer Science
2009-01-01
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| coleção: | Discrete Mathematics & Theoretical Computer Science |
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| Acesso em linha: | https://dmtcs.episciences.org/2726/pdf |