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Physics, Astronomy & Cosmology / How can photons be localised if the universe is expanding?
« on: 13/02/2009 12:27:57 »
JP I can see how one can have two non linear systems and using them together get a linear solution to a problem.
So I'm not that sure where linear ends (sort of, if it ever does:) and non linear takes over.
So yes, it depend on your choice of input.
But my impression is that all linear systems is just a 'sub species' of non linear mathematics.
If you look at the universe it is a non linear system, as far as I get it. Our Earth is a non linear system too.
But as in all mathematics every nook of it, when looking closer, seems to 'grow'
And that I think is true for linear mathematics too.
And it is a fascinating thought that we can use linear math to describe and solve problems involving non linear systems.
So I'm not that sure where linear ends (sort of, if it ever does:) and non linear takes over.
So yes, it depend on your choice of input.
But my impression is that all linear systems is just a 'sub species' of non linear mathematics.
If you look at the universe it is a non linear system, as far as I get it. Our Earth is a non linear system too.
But as in all mathematics every nook of it, when looking closer, seems to 'grow'
And that I think is true for linear mathematics too.
And it is a fascinating thought that we can use linear math to describe and solve problems involving non linear systems.