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

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

168K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

446K

3x² + 3x + 6 = 0

det| 8 3 ; 5 9 | = 57

144K

det| 9 8 ; 3 10 | = 66

371K

∇²t = 0

det| 9 4 ; 1 10 | = 86

259K

iħ ∂ψ/∂t = Ĥψ

86K

2n² + 4n + 0 = 0

224K

11t² + 9t + 7 = 0

234K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

218K