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 00:15Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

det| 4 2 ; 6 5 | = 8

144K

Fe₂O₃ + 3CO → 2Fe + 3CO₂

371K

∇²t = 0

F = G m₁m₂ / r²

259K

∇ × E = −∂B/∂t

86K

7z² + 2z + 0 = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

224K

8ψ² + 7ψ + 0 = 0

234K

det| 4 2 ; 5 5 | = 10

∇²t = 0

218K

det| 5 6 ; 2 6 | = 18

354K

2H₂ + O₂ → 2H₂O

iħ ∂ψ/∂t = Ĥψ

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