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 00:02Z

∑_{k=1}^{n} k = n(n+1)/2

8ψ² + 7ψ + 0 = 0

168K

∫₀^∞ e^(-θ²) dθ = √π / 2

446K

3x² + 3x + 6 = 0

d/dx [x^9] = 9x^8

144K

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

371K

∇²t = 0

iħ ∂ψ/∂t = Ĥψ

259K

iħ ∂ψ/∂t = Ĥψ

86K

7z² + 2z + 0 = 0

N₂ + 3H₂ ⇌ 2NH₃

224K

CH₄ + 2O₂ → CO₂ + 2H₂O

234K

det| 4 2 ; 5 5 | = 10

det| 6 6 ; 5 7 | = 12

218K

∇²r = 0

354K

2H₂ + O₂ → 2H₂O

∑_{k=1}^{n} k = n(n+1)/2

70K