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 00:10Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

\frac{8}{6} \sum_{i=1}^{n} i^{2}

446K

3x² + 3x + 6 = 0

N₂ + 3H₂ ⇌ 2NH₃

144K

∑_{k=1}^{n} k = n(n+1)/2

371K

∇²t = 0

11t² + 9t + 7 = 0

259K

iħ ∂ψ/∂t = Ĥψ

86K

7z² + 2z + 0 = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

224K

CaCO₃ → CaO + CO₂

234K

det| 12 9 ; 5 13 | = 111

218K

det| 7 4 ; 4 8 | = 40

354K