2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/143153Let K be an algebraically closed field. For a graded K-Algebra R, we write cmdef R:=dim R -depth R. We show that for each reductive group G (over K) which is not linearly reductive, there exists a faithful G-module V such that cmdef K[\sum_i=1^k V]^G >= k-2 for all k. We will give such a V explicitly.148 pages, Doktorarbeit (i.e. Ph. D. thesis)Commutative Algebra13A50text