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Permutácie pre n=3 majú tvar<br />

( 123) ( ) 0<br />

( 132) ( ) 1 ( 3 2)<br />

( 213) ( ) 1 ( 2 1)<br />

( 231) ( ) 2 ( 2 13 1)<br />

( 312) ( ) 2 ( 3 1 3 2)<br />

( 321) ( ) 3 ( 3 23 12 1)<br />

P = , , , I P =<br />

Definícia 9.1. Nech = ( A ij )<br />

matice je<br />

P = , , , I P = ><br />

P = , , , I P = ><br />

P = , , , I P = > , ><br />

P = , , , I P = > , ><br />

P = , , , I P = > , > , ><br />

A je štvorcová matica typu (n,n), determinant tejto<br />

∑<br />

P∈S<br />

n<br />

I<br />

( ) ( P<br />

1<br />

) 1 1 2 2<br />

A = − A A ...A<br />

(9.10)<br />

p p np<br />

kde sumácia obsahuje všetky možné permutácie z S n . Alternatívne označenie<br />

determinantu je det(A) alebo D(A).<br />

n<br />

Priesvitka 31

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