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 00:06Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

∇ × E = −∂B/∂t

446K

3x² + 3x + 6 = 0

∂α/∂r = 8α

144K

∂β/∂z = 1β

371K

∇²t = 0

8ψ² + 7ψ + 0 = 0

259K

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

86K

7z² + 2z + 0 = 0

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

224K

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

234K

det| 4 2 ; 5 5 | = 10

11t² + 9t + 4 = 0

2H₂ + O₂ → 2H₂O