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 00:27Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

6r² + 3r + 1 = 0

446K

3x² + 3x + 6 = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

144K

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

371K

∇²t = 0

det| 9 4 ; 1 10 | = 86

259K

∫₀^∞ e^(-θ²) dθ = √π / 2

86K

7z² + 2z + 0 = 0

∂z/∂φ = 7z

224K

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

234K

det| 4 2 ; 5 5 | = 10

11t² + 9t + 4 = 0