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Database Error
Message:MySQL Query fail: INSERT INTO `ga_sessoes` (`id_sessao`, `id_user`, `ip`, `expiracao`, `local`) VALUES ('b5ae25132056a00c11c91bcab762a300', '0', '10.1.240.163, 216.73.216.135', '1789929100', '/fichaartigo?id=640');
MySQL Error:Data too long for column 'ip' at row 1
Date:Sunday, September 20, 2026 at 7:01:40 PM
Script:/fichaartigo?id=640
Data too long for column 'ip' at row 1
Database Error
Message:MySQL Query fail: INSERT INTO `ga_sessoes` (`id_sessao`, `id_user`, `ip`, `expiracao`, `local`) VALUES ('b5ae25132056a00c11c91bcab762a300', '0', '10.1.240.163, 216.73.216.135', '1789929100', '/fichaartigo?id=640');
MySQL Error:Data too long for column 'ip' at row 1
Date:Sunday, September 20, 2026 at 7:01:40 PM
Script:/fichaartigo?id=640
Gazeta de matemática

Entropic groupoids and abelian groups

Following ETHERINGTON, a groupoid G is said to be entropie, if the following condition holds: ab. cd = ac . bd for all a,b,c,d in G.

PDF do Artigo | PDF integral
Gazeta nº 103, pág. nº 3 | Categoria: Artigos | Palavras-Chave: gazeta, matemática, grupos, abelianos, grupóides
Autor(es): José Morgado |