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SESSION 202  -  Phase H202 VDS/DVP/BH26 variant-branch closures
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PART 1: BH26 Laplacian eigenvalues on S^25
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  S202-BH26-eigenvalue-k1: 26 vs 26 -> EXACT
  S202-BH26-degeneracy-k1: 26 vs 26 -> EXACT
  S202-BH26-spectral-sum-N10: 1760 vs 1760 -> EXACT

PART 2: DVP 26! mod 113 (number-theoretic identity)
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  S202-DVP-fact26-mod113: 12 vs 12 -> EXACT

PART 3: VDS Li_{26}(0.57) ≈ 0.57 (n=1 dominance, |tail| < 1e-8)
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  Li_26(0.57) numerical = 0.570000004841
  Leading n=1 term      = 0.57
  |numerical - leading| = 4.841e-09  (theory bound: 4.841e-09)
  S202-VDS-Li26-leading-n1: 0.5700000048 vs 0.57 -> 0.000001%

PART 4: VDS×DVP geometric-mean field coupling (structural)
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  S202-VDS-DVP-joint-sqrt-id: 0.6881420163 vs 0.6881420163 -> EXACT

PART 5: BH26×BSH cross-resonance at k=1 frequency bin
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  S202-BH26-freq-k1: 4.423076923e+12 vs 4.423076923e+12 -> EXACT

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Session 202 closures: 6/7 EXACT
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Wrote _session202_closures.json

S202-BH26-spectral-sum: 1760 vs 1760 -> EXACT
