Nonexistence of Idempotent Means on Free Binary Systems
Canadian mathematical bulletin, Tome 62 (2019) no. 3, pp. 577-581
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Free binary systems are shown not to admit idempotent means. This refutes a conjecture of the author. It is also shown that the extension of Hindman’s theorem to nonassociative binary systems formulated and conjectured by the author is false.
Mots-clés :
amenability, binary system, Ellis’s Lemma, idempotent mean, Hindman’s Theorem, magma, nonassociative, Thompson’s group
Moore, Justin Tatch. Nonexistence of Idempotent Means on Free Binary Systems. Canadian mathematical bulletin, Tome 62 (2019) no. 3, pp. 577-581. doi: 10.4153/CMB-2018-038-5
@article{10_4153_CMB_2018_038_5,
author = {Moore, Justin Tatch},
title = {Nonexistence of {Idempotent} {Means} on {Free} {Binary} {Systems}},
journal = {Canadian mathematical bulletin},
pages = {577--581},
year = {2019},
volume = {62},
number = {3},
doi = {10.4153/CMB-2018-038-5},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2018-038-5/}
}
TY - JOUR AU - Moore, Justin Tatch TI - Nonexistence of Idempotent Means on Free Binary Systems JO - Canadian mathematical bulletin PY - 2019 SP - 577 EP - 581 VL - 62 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2018-038-5/ DO - 10.4153/CMB-2018-038-5 ID - 10_4153_CMB_2018_038_5 ER -
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