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Transformari liniare

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No¸tiunea de transformare liniară<br />

Transformări <strong>liniare</strong> între spa¸tii finit dimensionale<br />

Valori ¸si vectori proprii<br />

Compunerea transformărilor<br />

Matricea unei transformări<br />

Rela¸tia dintre rang ¸si defect<br />

Schimbarea matricei unei transformări <strong>liniare</strong><br />

5. Fie U, V , W spa¸tii <strong>liniare</strong> peste Γ cu<br />

dim(U) = n, dim(V ) = m, dim(W ) = p, m, n, p ∈ N.<br />

Fie f ∈ L(U, V ), g ∈ L(V , W ). Are sens compunerea<br />

g ◦ f ∈ L(U, W ).<br />

f g<br />

U → V → W<br />

↓ ↓<br />

A ∈ Mm,n(Γ) B ∈ Mp,m(Γ)<br />

Atunci transformării g ◦ f îi corespunde matricea<br />

B · A ∈ Mp,n(Γ).<br />

Transformări <strong>liniare</strong><br />

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