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

∇²r = 0

168K

∇ × E = −∂B/∂t

446K

3x² + 3x + 6 = 0

F = ma

144K

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂

371K

∇²t = 0

F = G m₁m₂ / r²

259K

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

86K

7z² + 2z + 0 = 0

∇ × E = −∂B/∂t

224K

det| 7 4 ; 4 8 | = 40

234K

det| 4 2 ; 5 5 | = 10

det| 7 9 ; 1 8 | = 47

218K

11t² + 9t + 4 = 0

2H₂ + O₂ → 2H₂O

iħ ∂ψ/∂t = Ĥψ

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

11θ² + 6θ + 7 = 0