The expected values of Hosoya index and Merrifield-Simmons index in a random spiro chain

Huang, Guihua; Wu, Renfang; Deng, Hanyuan

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August 12, 2025

Greetings from the Utilitas Mathematica (e-ISSN: 0315-3681) A Canadian journal of applied mathematics, computer science and statistics

We are pleased to announce that the Utilitas Mathematica is currently inviting qualified researchers, academics, and professionals to join our Editorial Board.

As a peer-reviewed, interdisciplinary journal committed to advancing knowledge in all areas of mathematics and computer science, UTM is seeking individuals with strong academic backgrounds, research expertise, and a passion for scholarly communication.

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Please submit your CV, list of publications, and a brief statement of interest to:

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July 18, 2025

Due to unavoidable circumstances, journal publications experienced a temporary suspension, during which misleading domains such as https://combinatorialpress.com/um/ (see in this all journals are clone) and www.combinatorialmath.com appeared. While the latter remained dormant, the former, under the guise of Utilitas Mathematica, disseminated unverified content that does not uphold the true legacy of Utilitas Mathematica.

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The expected values of Hosoya index and Merrifield-Simmons index in a random spiro chain

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