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 00:04Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

\frac{8}{7} \sum_{i=1}^{n} i^{2}

446K

3x² + 3x + 6 = 0

det| 9 4 ; 1 10 | = 86

144K

6x² + 6x + 1 = 0

371K

∇²t = 0

11t² + 9t + 7 = 0

259K

∂z/∂ψ = 1z

86K

7z² + 2z + 0 = 0

∇²r = 0

224K

PV = nRT

234K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

218K

2H₂ + O₂ → 2H₂O

354K

E = mc²

70K