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 00:01Z

∑_{k=1}^{n} k = n(n+1)/2

2H₂ + O₂ → 2H₂O

168K

∂y/∂n = 5y

446K

3x² + 3x + 6 = 0

∫₀^∞ e^(-r²) dr = √π / 2

144K

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

371K

∇²t = 0

PV = nRT

259K

det| 9 6 ; 7 10 | = 48

86K

7z² + 2z + 0 = 0

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

224K

iħ ∂ψ/∂t = Ĥψ

234K

det| 4 2 ; 5 5 | = 10

8ψ² + 7ψ + 0 = 0

218K

∇ × E = −∂B/∂t

354K

PV = nRT

70K

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

402K