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Mathlib.Tactic.FunProp.Theorems

fun_prop environment extensions storing theorems for fun_prop #

Tag for one of the 5 basic lambda theorems, that also hold extra data for composition theorem

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    Tag for one of the 5 basic lambda theorems

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      Convert LambdaTheoremArgs to LambdaTheoremType.

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        Decides whether f is a function corresponding to one of the lambda theorems.

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          Structure holding information about lambda theorem.

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            Collection of lambda theorems

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              Return proof of lambda theorem

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                Environment extension storing all lambda theorems.

                Get lambda theorems for particular function property funPropName.

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                  Function theorems are stated in uncurried or compositional form.

                  uncurried

                  theorem Continuous_add : Continuous (fun x => x.1 + x.2)
                  

                  compositional

                  theorem Continuous_add (hf : Continuous f) (hg : Continuous g) : Continuous (fun x => (f x) + (g x))
                  
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                    TheoremForm to string

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                    theorem about specific function (either declared constant or free variable)

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                          General theorem about function property used for transition and morphism theorems

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                            There are four types of theorems:

                            • lam - theorem about basic lambda calculus terms
                            • function - theorem about a specific function(declared or free variable) in specific arguments
                            • mor - special theorems talking about bundled morphisms/DFunLike.coe
                            • transition - theorems inferring one function property from another

                            Examples:

                            • lam
                              theorem Continuous_id : Continuous fun x => x
                              theorem Continuous_comp (hf : Continuous f) (hg : Continuous g) : Continuous fun x => f (g x)
                            
                            • function
                              theorem Continuous_add : Continuous (fun x => x.1 + x.2)
                              theorem Continuous_add (hf : Continuous f) (hg : Continuous g) :
                                  Continuous (fun x => (f x) + (g x))
                            
                            • mor - the head of function body has to be ``DFunLike.code
                              theorem ContDiff.clm_apply {f : E → F →L[𝕜] G} {g : E → F}
                                  (hf : ContDiff 𝕜 n f) (hg : ContDiff 𝕜 n g) :
                                  ContDiff 𝕜 n fun x => (f x) (g x)
                              theorem clm_linear {f : E →L[𝕜] F} : IsLinearMap 𝕜 f
                            
                            • transition - the conclusion has to be in the form P f where f is a free variable
                              theorem linear_is_continuous [FiniteDimensional ℝ E] {f : E → F} (hf : IsLinearMap 𝕜 f) :
                                  Continuous f
                            
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                              For a theorem declaration declName return fun_prop theorem. It correctly detects which type of theorem it is.

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                                Register theorem declName with fun_prop.

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