Geodesic
Tame triangular matrix algebras
Colloquium Mathematicum, Tome 86 (2000) no. 2, pp. 259-303
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We describe all finite-dimensional algebras A over an algebraically closed field for which the algebra $T_2(A)$ of 2×2 upper triangular matrices over A is of tame representation type. Moreover, the algebras A for which $T_2(A)$ is of polynomial growth (respectively, domestic, of finite representation type) are also characterized. 
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     title = {Tame triangular matrix algebras},
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Zbigniew Leszczyński; Andrzej Skowroński. Tame triangular matrix algebras. Colloquium Mathematicum, Tome 86 (2000) no. 2, pp. 259-303. doi: 10.4064/cm-86-2-259-303

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