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133Jurisdiction — In general — Territorial — Territorial limits of jurisdiction — Attempt to obtain property by deception — Letters posted in Northern Ireland claiming payments from addressees in England — Jurisdiction of the English courts — Objective territorial principle of jurisdiction — The law of England

[EN] A group G is said to be an involutive Yang¿Baxter group, or simply an IYB-group, if it is isomorphic to the permutation group of an involutive, nondegenerate set-theoretic solution of the Yang-Baxter equation. We give new sufficient conditions for a group that can be factorised as a product of two IYB-groups to be an IYB-group. Some earlier results are direct consequences of our main theorem. ; The research of this paper was supported by the grant PGC2018-095140-B-I00 from the Ministerio de Ciencia, Innovacion y Universidades and the Agencia Estatal de Investigacion, Spain, and FEDER, European Union, and by the grant PROMETEO/2017/057 from the Generalitat, Valencian Community, Spain. The first author was supported by the predoctoral grant 201606890006 from the China Scholarship Council. The fourth author was supported by a predoctoral grant from the "Atraccio del talent" Programme from the Universitat de Valencia. ; Meng, H.; Ballester-Bolinches, A.; Esteban Romero, R.; Fuster-Corral, N. (2021). On finite involutive Yang-Baxter groups. Proceedings of the American Mathematical Society. 149(2):793-804. https://doi.org/10.1090/proc/15283 ; S ; 793 ; 804 ; 149 ; 2