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| Main Authors: | , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2026
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| Subjects: | |
| Online Access: | https://onlinelibrary.wiley.com/doi/10.1002/jcd.70013 |
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Table of Contents:
- 1‐Rotational Balanced Incomplete Block Designs With Block Size Four and Arbitrary Index Zian Zhang Junling Zhou Yanxun Chang Journal of Combinatorial Designs ABSTRACT The necessary and sufficient conditions for the existence of 1‐rotational balanced incomplete block designs with block size four and index unity have been determined to be and [J. Comb. Theory, Ser. A 206 (2024) 105890]. This work completely determines the existence spectrum of 1‐rotational balanced incomplete block designs with block size four and any index . To be specific, for and , there exists a 1‐rotational BIBD if and only if , and . 10.1002/jcd.70013 http://onlinelibrary.wiley.com/termsAndConditions#vor