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pro vyhledávání: '"Sheng Jun Gong"'
Autor:
Sheng-Jun Gong, Jie-Tai Yu
Publikováno v:
Algebra Colloquium. 17:43-46
Let K be a field of characteristic zero. Based on the degree estimate of Makar-Limanov and Yu, we prove that the preimage of a coordinate under an injective endomorphism of K〈x, y〉 is also a coordinate. As by-products, we give new proofs of the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d5b210b4b3bde109902c9f22a17b0e1
https://doi.org/10.1142/s1005386710000064
https://doi.org/10.1142/s1005386710000064
Autor:
Sheng Jun Gong, Jie-Tai Yu
Publikováno v:
Journal of Algebra. 320(7):3062-3068
Let $A_2$ be a free associative or polynomial algebra of rank two over a field $K$ of characteristic zero. Based on the degree estimate of Makar-Limanov and J.-T.Yu, we prove: 1) An element $p \in A_2$ is a test element if $p$ does not belong to any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98b41b7bdd336bc2fc313c8fa3012048