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 00:54Z

∑_{k=1}^{n} k = n(n+1)/2

∂y/∂n = 5y

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

det| 7 7 ; 4 8 | = 28

144K

∑_{k=1}^{n} k = n(n+1)/2

371K

∇²t = 0

N₂ + 3H₂ ⇌ 2NH₃

259K

det| 7 4 ; 4 8 | = 40

86K

7z² + 2z + 0 = 0

2H₂ + O₂ → 2H₂O

224K

∇²t = 0

234K

det| 4 2 ; 5 5 | = 10

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

218K