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 00:02Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

∫₀^∞ e^(-t²) dt = √π / 2

446K

3x² + 3x + 6 = 0

det| 5 3 ; 7 6 | = 9

144K

∇ × E = −∂B/∂t

371K

∇²t = 0

6r² + 3r + 1 = 0

259K

e^{i\pi} + 1 = 0

86K

7z² + 2z + 0 = 0

det| 9 4 ; 1 10 | = 86

224K

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

234K

det| 4 2 ; 5 5 | = 10

\frac{2}{2} \sum_{i=1}^{n} i^{2}

218K

5z² + 8z + 3 = 0

354K

\frac{4}{6} \sum_{i=1}^{n} i^{2}

70K