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| Autori principali: | , |
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| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2024
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| Soggetti: | |
| Accesso online: | https://onlinelibrary.wiley.com/doi/10.1002/jcd.21949 |
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Sommario:
- Mutual incidence matrix of two balanced incomplete block designs Alexander Shramchenko Vasilisa Shramchenko Journal of Combinatorial Designs AbstractWe propose to consider a mutual incidence matrix of two balanced incomplete block designs built on the same finite set. In the simplest case, this matrix reduces to the standard incidence matrix of one block design. We find all eigenvalues of the matrices and and their eigenspaces. 10.1002/jcd.21949 http://creativecommons.org/licenses/by-nc-nd/4.0/