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 06:53Z

det| 3 9 ; 6 4 | = -42

∂y/∂n = 5y

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

∑_{k=1}^{n} k = n(n+1)/2

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

144K

PV = nRT

371K

2z² + 2z + 5 = 0

det| 9 4 ; 1 10 | = 86

259K

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

86K

iħ ∂ψ/∂t = Ĥψ

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

224K

∇²t = 0

234K

∫₀^∞ e^(-t²) dt = √π / 2

e^{i\pi} + 1 = 0

218K