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- #2

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The connection or mapping between the two is an 'affine transform'.

An affine transform preserves parallel lines.

I guess the model of the ideal could be called an 'affine model'.

https://en.wikipedia.org/wiki/Affine_transformation

- #3

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affine transform has nothing to do with affine model?

The connection or mapping between the two is an 'affine transform'.

An affine transform preserves parallel lines.

I guess the model of the ideal could be called an 'affine model'.

https://en.wikipedia.org/wiki/Affine_transformation

- #4

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There seems to be no such thing as an "affine model".affine transform has nothing to do with affine model?

"Affine model" appears to be a conflation of the terms "affine" transform and the transformed ideal "model". That might be used to refer to a model that is subjected to an affine transform.

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