CP3 along the raw output of Lemma 102 over a member #
[Kol07, Lemma 102] on a triple (X, I, E) with max-ord I = 1 and a member Eʲ: blow up Z₋₁,
the union of the components of Eʲ inside V(I), then push forward the inductive run on the
strict transform of Eʲ (rawSeq, Hironaka.Resolution.Algebraic.BoundaryClearing.Restriction).
For the statement CP3 of the embedded desingularization
(Hironaka.Resolution.Algebraic.Wlo05.EmbeddedChainRelative) its centres are classified at every
point for the outer data (I, E) from the inductive classification:
- at a point
qofZ₋₁(stage0;map_centerS) the stalk of the centre is the stalk ofEʲ(stalkIdeal_Zminus1_eq), the coordinatez (c j)of the member — the stratum of level0withs = {c j}, whose admissibility condition (★)b (c j) ≠ 0is the order ofIat the generic point of the component ofEʲthroughq, which is1because that component lies inZ₋₁(mem_support_Zminus1_iff_ord_eq) — read through the exponent identitytoNat_ord_eq_of_stalkIdeal_eq_span_mulfor either shape; - at a point of a later centre — the push-forward of a centre of the inductive run along the stage
inclusion
g(center_pushforward_mk,support_map) — the identities of [Kol07, Lemma 62] read the outer boundaryE − Eʲand the outer marked transform on the strict transform ofEʲas the data of the inductive run (pullback_pushforward,pullbackStageHom_pushforward_heq_mk,totalTransformSeq_comap_pullbackStageHom_of_forall_ltwith(E − Eʲ) + Eʲsnc,IsOrderGeSeq.markedTransformSeq_comap_pullbackStageHom_mk); the total transform ofE − Eʲembeds in that ofEwith the transform ofEʲas the only member outside the range (exists_embeds_totalTransformSeq,component_originalIdx= the kernel ofg); the family of the inductive run is snc (isSnc_restrictedFamily) and its marked ideal nonzero (isNonzeroEverywhere_markedTransformSeq); and the pointwise passcenterClassifiedAt_of_comap_member(Hironaka.Resolution.Algebraic.Wlo05.EmbeddedCP3Pass) lifts the inductive classification.
No smoothness of Eʲ and no inclusion Eʲ ≤ I is assumed: the passes of Step 2.1 of the proof of
[Kol07, Theorem 103] have neither. This argument is not in the literature. Used in
Hironaka.Resolution.Algebraic.Wlo05.EmbeddedCP3Step21 and
Hironaka.Resolution.Algebraic.Wlo05.EmbeddedCP3Step22.
CP3 along the raw output of Lemma 102 over a member Eʲ for the outer data (I, E), from
CP3 for the values of the inductive functor B' at the mark 1 ([Kol07, Lemma 102] and
[Kol07, Lemma 62]): at a point of Z₋₁ the stratum of level 0 given by the coordinate of Eʲ;
at a point of a later centre the pointwise pass centerClassifiedAt_of_comap_member on the stage
inclusion, with the identities of Lemma 62.