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 00:14Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

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

446K

3x² + 3x + 6 = 0

∑_{k=1}^{n} k = n(n+1)/2

144K

Fe₂O₃ + 3CO → 2Fe + 3CO₂

371K

∇²t = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

259K

8ψ² + 7ψ + 0 = 0

86K

7z² + 2z + 0 = 0

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

224K

det| 12 1 ; 5 13 | = 151

234K

det| 4 2 ; 5 5 | = 10

det| 5 2 ; 3 6 | = 24

218K

∇ × E = −∂B/∂t

354K