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 00:13Z

∑_{k=1}^{n} k = n(n+1)/2

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

168K

∇ × E = −∂B/∂t

446K

3x² + 3x + 6 = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

144K

det| 7 4 ; 4 8 | = 40

371K

∇²t = 0

∂y/∂n = 5y

259K

8θ² + 8θ + 6 = 0

86K

7z² + 2z + 0 = 0

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

224K

∫₀^∞ e^(-n²) dn = √π / 2

234K

det| 3 7 ; 2 4 | = -2

218K

∇²ω = 0

354K

F = G m₁m₂ / r²

70K