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Replaced polred with polredbest in Numfield.optimized_subfields #39205

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@kaneki003 kaneki003 commented Dec 27, 2024

Related to #39156

Upgraded polred(deprecated version) to recommended polredbest according to https://pari.math.u-bordeaux.fr/dochtml/html/General_number_fields.html#se:polred in NumberField.optimized_subfields.

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  • The title is concise and informative.
  • The description explains in detail what this PR is about.
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@user202729
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the problem is the two functions are not equivalent (?) polredbest always return coefficients defining the same field, while polred return coefficients defining subfields.

@kaneki003
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Yes from what i found polred gives coefficients of subfields in some cases(not always) while polredbest always gives for same field.
I am now looking for better alternative for polred

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