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Mathlib.Tactic.Attr.Register

Attributes used in Mathlib #

In this file we define all simp-like and label-like attributes used in Mathlib. We declare all of them in one file for two reasons:

Simp set for functor_norm

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    Simplification procedure

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      Simplification procedure

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        Simp set for functor_norm

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          Simplification procedure

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            The simpset field_simps is used by the tactic field_simp to reduce an expression in a field to an expression of the form n / d where n and d are division-free.

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              Simp attribute for lemmas about Even

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                Simplification procedure

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                  Simplification procedure

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                    "Simp attribute for lemmas about IsROrC"

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                      The simpset rify_simps is used by the tactic rify to move expressions from , , or to .

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                        Simplification procedure

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                          Simplification procedure

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                            The simpset qify_simps is used by the tactic qify to move expressions from or to which gives a well-behaved division.

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                              Simplification procedure

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                                The simpset zify_simps is used by the tactic zify to move expressions from to which gives a well-behaved subtraction.

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                                  Simplification procedure

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                                    The simpset mfld_simps records several simp lemmas that are especially useful in manifolds. It is a subset of the whole set of simp lemmas, but it makes it possible to have quicker proofs (when used with squeeze_simp or simp only) while retaining readability.

                                    The typical use case is the following, in a file on manifolds: If simp [foo, bar] is slow, replace it with squeeze_simp [foo, bar, mfld_simps] and paste its output. The list of lemmas should be reasonable (contrary to the output of squeeze_simp [foo, bar] which might contain tens of lemmas), and the outcome should be quick enough.

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                                      Simplification procedure

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                                        Simp set for integral rules.

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                                          Simplification procedure

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                                            simp set for the manipulation of typevec and arrow expressions

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                                              Simplification procedure

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                                                Simplification rules for ghost equations.

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                                                  Simplification procedure

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                                                    The @[nontriviality] simp set is used by the nontriviality tactic to automatically discharge theorems about the trivial case (where we know Subsingleton α and many theorems in e.g. groups are trivially true).

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                                                      A stub attribute for is_poly.

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