Askey–Wilson polynomials Associative algebra Biorthogonal systems Category-theoretic methods and results Connection coefficients Gegenbauer polynomials Graded rings Inverses of explicit lower triangular matrices Jacobi polynomials Lie algebra Linear and multilinear algebra Matrix theory Módulos cíclicos Módulos indescomponibles Módulos uniseriales Primitive element Productos tensoriales Uniserial module Varieties and morphisms Zócalo Algebraic theory Cohomology of Lie algebras Cohomologı́a de álgebras de Lie Filiform Lie algebras Graded Lie algebras Lie algebra cohomology Module structure Nash–Moser theorem Nilpotent Lie algebras Poisson algebras