Σ index Eq pack 19 Eq pack 13 Σ#12 Batch 22 Matrix 17 Σ#24 Batch 10 Ledger /9 Rxn set 8 Eq pack 25 Σ#18 Rxn set 26 Rxn set 14 Matrix 5 Ledger /3 Matrix 23

Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-19 20:43Z

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

∑_{k=1}^{n} k = n(n+1)/2

46K

∇ × E = −∂B/∂t

468K

CaCO₃ → CaO + CO₂

∇²β = 0

289K

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

278K

e^{i\pi} + 1 = 0

9α² + 7α + 5 = 0

339K

∂z/∂φ = 7z

177K

∂x/∂r = 4x

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

358K

∫₀^∞ e^(-n²) dn = √π / 2

121K

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

399K

det| 2 3 ; 5 3 | = -9

316K

8ψ² + 7ψ + 0 = 0

11K