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

7y² + 9y + 1 = 0

168K

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

446K

3x² + 3x + 6 = 0

det| 11 4 ; 5 12 | = 112

144K

ω = 2πf

371K

∇²t = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

259K

∑_{k=1}^{n} k = n(n+1)/2

86K

7z² + 2z + 0 = 0

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

224K

9ψ² + 7ψ + 3 = 0

234K

det| 4 2 ; 5 5 | = 10

2γ² + 5γ + 2 = 0

218K

det| 9 4 ; 1 10 | = 86

354K