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 00:03Z

∑_{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

5φ² + 1φ + 1 = 0

144K

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

371K

∇²t = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

259K

det| 5 2 ; 3 6 | = 24

86K

7z² + 2z + 0 = 0

λ = h/p

224K

12ψ² + 4ψ + 6 = 0

234K

det| 4 2 ; 5 5 | = 10

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

218K

∫₀^∞ e^(-θ²) dθ = √π / 2

354K