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

d/dx [x^3] = 3x^2

168K

det| 2 8 ; 7 3 | = -50

446K

3x² + 3x + 6 = 0

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

144K

det| 11 9 ; 0 12 | = 132

371K

∇²t = 0

F = G m₁m₂ / r²

259K

∂y/∂n = 5y

86K

7z² + 2z + 0 = 0

det| 7 4 ; 4 8 | = 40

224K

12α² + 6α + 7 = 0

234K

e^{i\pi} + 1 = 0

218K

∫₀^∞ e^(-θ²) dθ = √π / 2

354K

∇ × E = −∂B/∂t

70K