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 00:30Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

10t² + 9t + 5 = 0

144K

e^{i\pi} + 1 = 0

371K

∇²t = 0

7y² + 9y + 1 = 0

259K

d/dφ [φ^1] = 1φ^0

86K

7z² + 2z + 0 = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

224K

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

234K

det| 4 2 ; 5 5 | = 10

det| 9 4 ; 1 10 | = 86

218K

∑_{k=1}^{n} k = n(n+1)/2

354K