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On the representation type of one point extensions of tame concealed algebras

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Abstract

Letk be an algebraically closed field and Λ a finite dimensionalk-algebra. LetqΛ be the quadratic Tits form associated with Λ. If Λ is tame we show thatqΛ is weakly semipositive. Let Λ be a one-point extension of a tame concealed algebra, then Λ is tame iffqΛ is weakly semipositive.

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  1. Instituto de Matemáticas Area de la Investigación Cientifíca Circuito Exterior, Ciudad Universitaria, México 04510 D. F., México

    J. A. de la Peña

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de la Peña, J.A. On the representation type of one point extensions of tame concealed algebras. Manuscripta Math 61, 183–194 (1988). https://doi.org/10.1007/BF01259327

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