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Dal'nevostochnyi Matematicheskii Zhurnal, 2018, Volume 18, Number 2, Pages 183–188
(Mi dvmg379)
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This article is cited in 3 scientific papers (total in 3 papers)
On the Somos-4 sequence
A. A. Illarionovab a Khabarovsk Division of the Institute for Applied Mathematics, Far Eastern Branch, Russian Academy of Sciences
b Pacific National University, Khabarovsk
Abstract:
In 2005 A.N.W. Hone has obtained an explicit formula for Somos-4 sequences in terms of the Weierstrass sigma function.
The proof is valid only for sequences without zero terms. We prove that
arbitrary sequence satisfying the Somos-4 equation is determined by the same formula iff it satisfies
some determinant identity (analogue of the formula of addition).
We give examples of sequences that satisfy the Somos-4 equation but do not satisfy the determinant identity.
Key words:
Somos sequences, elliptic functions, addition theorems.
Received: 16.10.2018
Citation:
A. A. Illarionov, “On the Somos-4 sequence”, Dal'nevost. Mat. Zh., 18:2 (2018), 183–188
Linking options:
https://www.mathnet.ru/eng/dvmg379 https://www.mathnet.ru/eng/dvmg/v18/i2/p183
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