• Sigma-maps on triangular algebras 

      Sánchez Ortega, Juana; Repka, Joe; Martin-Gonzalez, Candido (2018-01-30)
      Triangular algebras were introduced by Chase in the early 1960s. He ended up with these structures in the course of his study of the asymmetric behavior of semi-hereditary rings. Since their introduction, triangular ...