Σ index Eq pack 19 Rxn set 20 Rxn set 26 Σ#24 Σ#12 Ledger /21 Eq pack 13 Ledger /3 Eq pack 1 Batch 16 Σ#18 Σ#6 Ledger /15 Batch 4

Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-20 00:53Z

∑_{k=1}^{n} k = n(n+1)/2

det| 12 9 ; 5 13 | = 111

168K

det| 9 4 ; 1 10 | = 86

446K

3x² + 3x + 6 = 0

∇²z = 0

144K

iħ ∂ψ/∂t = Ĥψ

371K

∇²t = 0

iħ ∂ψ/∂t = Ĥψ

259K

∇²β = 0

86K

7z² + 2z + 0 = 0

\lim_{t\to 0} \frac{\sin t}{t} = 1

224K

\binom{n}{k} = \frac{n!}{k!(n-k)!}

234K

d/dt [t^3] = 3t^2

218K

3r² + 2r + 0 = 0

354K

11φ² + 4φ + 0 = 0

70K

∑_{k=1}^{n} k = n(n+1)/2

402K