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

det| 7 2 ; 7 8 | = 42

168K

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

446K

3x² + 3x + 6 = 0

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

144K

Fe₂O₃ + 3CO → 2Fe + 3CO₂

371K

∇²t = 0

7r² + 8r + 5 = 0

259K

det| 4 7 ; 2 5 | = 6

86K

∫₀^∞ e^(-ψ²) dψ = √π / 2

224K

det| 9 4 ; 1 10 | = 86

234K

∂n/∂θ = 3n

218K

∫₀^∞ e^(-t²) dt = √π / 2

354K

∑_{k=1}^{n} k = n(n+1)/2

70K

2H₂ + O₂ → 2H₂O

402K