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Bibliographic Details
Main Authors: Zian Zhang, Junling Zhou, Yanxun Chang
Format: Artículo Open Access
Published: Wiley 2026
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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