what is the difference between

D=p^-1 A P

and

D=p^t A P

i know then one of them is for diagonalisation of A

what is the purpose of the other?

Printable View

- Jun 22nd 2011, 02:11 PMtransgalacticdifference between formulas question
what is the difference between

D=p^-1 A P

and

D=p^t A P

i know then one of them is for diagonalisation of A

what is the purpose of the other? - Jun 22nd 2011, 02:20 PMpickslidesRe: difference between formulas question
The first equation is for the diagonalisation. Otherwise consider P^TP = I

- Jun 22nd 2011, 02:22 PMHallsofIvyRe: difference between formulas question
If P is

**orthogonal**, $\displaystyle P^T= P^{-1}$ so that those are the same. - Jun 22nd 2011, 02:25 PMtransgalacticRe: difference between formulas question
ok ,thanks :)