- #1
mnb96
- 715
- 5
Hi,
if we suppose x and y are two elements of some vector space V (say ℝn), and if we consider a linear function f:V→V', we know that the inner product of the transformed vectors is given by: [tex]\left\langle f\mathbf{x} , f\mathbf{y} \right\rangle = \left\langle \mathbf{x} , \overline{f}f\mathbf{y} \right\rangle = \left\langle \overline{f}f\mathbf{x} , \mathbf{y} \right\rangle[/tex] where [itex]\overline{f}[/itex] is the adjoint operator of [itex]f[/itex].
What can we say about [itex]\left\langle f\mathbf{x} , f\mathbf{y} \right\rangle[/itex] when f is non-linear, for example a diffeomorphism ?
if we suppose x and y are two elements of some vector space V (say ℝn), and if we consider a linear function f:V→V', we know that the inner product of the transformed vectors is given by: [tex]\left\langle f\mathbf{x} , f\mathbf{y} \right\rangle = \left\langle \mathbf{x} , \overline{f}f\mathbf{y} \right\rangle = \left\langle \overline{f}f\mathbf{x} , \mathbf{y} \right\rangle[/tex] where [itex]\overline{f}[/itex] is the adjoint operator of [itex]f[/itex].
What can we say about [itex]\left\langle f\mathbf{x} , f\mathbf{y} \right\rangle[/itex] when f is non-linear, for example a diffeomorphism ?
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