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

Fe₂O₃ + 3CO → 2Fe + 3CO₂

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

5φ² + 1φ + 1 = 0

144K

∇²r = 0

371K

∇²t = 0

det| 11 4 ; 5 12 | = 112

259K

\frac{8}{7} \sum_{i=1}^{n} i^{2}

86K

7z² + 2z + 0 = 0

\oint_C \vec{F}\cdot d\vec{r} = 0

224K

det| 9 4 ; 1 10 | = 86

234K

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

218K

∫₀^∞ e^(-α²) dα = √π / 2

354K

6t² + 6t + 4 = 0

70K