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 00:20Z

∑_{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

∂γ/∂z = 6γ

144K

d/dθ [θ^3] = 3θ^2

371K

∇²t = 0

6t² + 6t + 4 = 0

259K

det| 1 4 ; 3 2 | = -10

86K

7z² + 2z + 0 = 0

∂α/∂r = 8α

224K

det| 7 4 ; 4 8 | = 40

234K

det| 4 2 ; 5 5 | = 10

N₂ + 3H₂ ⇌ 2NH₃

218K

∫₀^∞ e^(-θ²) dθ = √π / 2

354K