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

det| 7 4 ; 4 8 | = 40

446K

3x² + 3x + 6 = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

144K

det| 5 6 ; 2 6 | = 18

371K

∇²t = 0

∂n/∂θ = 3n

259K

N₂ + 3H₂ ⇌ 2NH₃

86K

7z² + 2z + 0 = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

224K

\frac{8}{6} \sum_{i=1}^{n} i^{2}

234K

det| 4 2 ; 5 5 | = 10

∑_{k=1}^{n} k = n(n+1)/2

218K

∇²z = 0

354K

2H₂ + O₂ → 2H₂O