The composite of two family functors along induced triples: the link #
The modified marked resolution of [Wlo09, Theorem 7.4.1] runs its phases in succession on every
relatively compact open: the rounds on the nonmonomial part, the monomial phase, and the modified
first step; each is a family functor with the two naturality properties, and each is applied to the
triple induced by the value of the previous phase at its last stage (the triple
(X_j, I_j, E_j) carried along a composite sequence in [Kol07, 104, Step 2.1]). This module is the
generic link of such a composite, for two arbitrary family functors
F : AnalyticFamilyFunctor ψ₀ Dom₁ and G : AnalyticFamilyFunctor ψ₀ Dom₂ whose classes are
related by a transport hypothesis (hFG: the induced triple of a value of F lies in Dom₂). It
is the link of the second step of the order reduction (ChainTransport.lean: linkValue,
link_rel) with the family of one boundary member replaced by the functor G, whose transport
lemmas are those of InducedValueFunctor.lean:
alongList F G s hF hFG T hT W hW V hV hVW : CenterList ψ₀ (M.restrict V): the value ofFon the outer openW, restricted toV ⊆ W(closure V ⊆ W), followed by the value ofGat the induced triple, read on the lifted range ofV(shrinkAppend);alongList_isOfOrderGeis the order clause at the marks, from those ofFandG(isOfOrderGe_shrinkAppend);alongList_rel, the relation of the link along a local analytic isomorphismh : N → Mwithh(W') ⊆ W,h(V') ⊆ V: the composite over(W', V')for the pulled-back triple, with empty blow-ups deleted, is the composite over(W, V)pulled back alongh|_{V'}and cleaned (the second condition of [Kol07, 34.1], on each open). The list algebra isshrinkAppend_eraseEmpty_pullback; the two appended values are compared byinducedValue_rel(the two naturality properties ofGat the induced triples); the values ofFare related by its own commutation and compatibility (seqOn_pullback_eq_of_image_subset);ClassInducedEraseEmptyClosed s Dom, the property of the class ofGwhich the relation needs beyond its closure under pull-back: the induced triple of the cleaned list lies in the class when the induced triple of the list does [Kol07, 32];BMOClass mandBOClass mhave it (bmoClass_induced_eraseEmpty,boClass_induced_eraseEmpty: the order read througheraseEmptyLast⁻¹, the nonempty members embedded byeraseEmptyIdx).
The functor itself, its compatibility (the relation at the identity along a common refinement of
two canonical chains), commutation and indifference are in ComposeInducedFunctor.lean.
The class of the induced triple at the cleaned list #
The order of the marked transform at the last stage of the cleaned list is its order at the
last stage of the list, read through eraseEmptyLast⁻¹ (markedTransformSeq_last_eraseEmpty; the
order of an inverse-image ideal sheaf at a point where the map is a local isomorphism)
[Kol07, 34.1].
Finitely many nonempty boundary members survive the deletion of empty blow-ups [Kol07, 32]:
the nonempty members of the boundary of the cleaned list embed into those of the list through
eraseEmptyIdx (hyp_eraseEmptyIdx: the member eraseEmptyIdx i, pulled back to the last stage of
the cleaned list, is the member i).
The class of BMO_{n,m} (BMOClass m) at an induced triple is kept by the cleaning of the
inducing list: the mark is the same, the nonempty members finite by
finite_nonempty_induced_eraseEmpty.
The class of BO_{n,m} (BOClass m) at an induced triple is kept by the cleaning of the
inducing list: the order bound through ord_induced_eraseEmpty, the finiteness through
finite_nonempty_induced_eraseEmpty.
A class of triples closed under the deletion of empty blow-ups from the inducing list at the
mark s: the induced triple of the cleaned list lies in the class when the induced triple of the
list does ([Kol07, 32]). It supplies the class proof hDe₂ of inducedValue_rel in
the relation of the link of the composite; BMOClass m and BOClass m have it
(bmoClass_induced_eraseEmpty, boClass_induced_eraseEmpty).
Equations
- One or more equations did not get rendered due to their size.
Instances For
BMOClass m is closed under pull-back along local analytic isomorphisms: the mark is kept, the
nonempty members of the inverse image family are among the nonempty members.
BOClass m is closed under pull-back along local analytic isomorphisms
(boClass_of_isPullbackOf at the pulled-back triple).
BMOClass m is closed under the cleaning of the inducing list at every mark.
BOClass m is closed under the cleaning of the inducing list at every mark.
The restricted triple over the outer open W.
Equations
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The value of F on the outer open W (the first factor of the link).
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The triple induced by the value of F at its last stage.
Equations
- F.inducedOfFirst s hF T hT W hW = (Hironaka.Manifold.AnalyticFamilyFunctor.firstTriple T W).induced s (F.firstList T hT W hW) ⋯
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The reading open of the link: the lifted range of V ⊆ W at the last stage of the value of
F.
Equations
- F.firstReadOpen T hT W hW V hVW = (F.firstList T hT W hW).liftRange (M.restrictLE ⋯) ⋯
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The appended value of the link: G at the triple induced by the value of F, read on the
lifted range of V ⊆ W.
Equations
- F.appendValue G s hF hFG T hT W hW V hV hVW = (G.fam (F.inducedOfFirst s ⋯ T hT W hW) ⋯).seqOn (F.firstReadOpen T hT W hW V hVW) ⋯
Instances For
The composite over (W, V): the value of F on W restricted to V, followed by the
value of G at the induced triple on the lifted range (shrinkAppend).
Equations
- F.alongList G s hF hFG T hT W hW V hV hVW = (F.firstList T hT W hW).shrinkAppend (M.restrictLE ⋯) ⋯ (F.appendValue G s ⋯ ⋯ T hT W hW V hV hVW)
Instances For
The order clause of the composite at the mark s, from those of F (hF) and G (hG):
isOfOrderGe_shrinkAppend, the restricted triple rewritten by pullback_inclusion_restrictLE.
The value of F on W' ⊆ N for the pulled-back triple, cleaned, is the value of F on
W ⊇ h(W') pulled back along h|_{W'} and cleaned (the commutation and compatibility of F,
seqOn_pullback_eq_of_image_subset; the deletion of empty blow-ups is idempotent).
The second condition of [Kol07, 34.1] for one link of the composite: the composite over
(W', V') for the pulled-back triple, cleaned, is the composite over (W, V) pulled back along
h|_{V'} and cleaned, for h(W') ⊆ W, h(V') ⊆ V. This is link_rel with the family of one
boundary member replaced by G: the list algebra shrinkAppend_eraseEmpty_pullback, the two
appended values compared by inducedValue_rel (the naturality of G at the induced triples), the
values of F related by firstList_pullback_rel.