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by OanaC
Tue Apr 21, 2009 5:51 pm
Forum: Algebra liniara
Topic: Matrice diagonala si multiplicitati
Replies: 1
Views: 625

Printr-o matrice de permutare P putem obtine in PAP^{-1} valorile proprii aranjate pe diagonala in k blocuri. Atunci AB=BA\ <=>\ PBP^{-1} comuta cu PAP^{-1} , ceea ce inseamna (prin simplu calcul) ca PBP^{-1} e formata din k blocuri patratice de dimensiuni d_1, d_2,...,d_k pe diagonala. Asadar B , c...

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