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 00:53Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

det| 12 9 ; 5 13 | = 111

446K

3x² + 3x + 6 = 0

10ψ² + 5ψ + 0 = 0

144K

8θ² + 8θ + 6 = 0

371K

∇²t = 0

\frac{12}{6} \sum_{i=1}^{n} i^{2}

259K

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

86K

7z² + 2z + 0 = 0

det| 2 7 ; 7 3 | = -43

224K

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

234K

det| 9 4 ; 1 10 | = 86

218K