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 00:12Z

∑_{k=1}^{n} k = n(n+1)/2

\lim_{x\to 0} \frac{\sin x}{x} = 1

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

ω = 2πf

144K

d/dθ [θ^3] = 3θ^2

371K

∇²t = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

259K

CH₄ + 2O₂ → CO₂ + 2H₂O

86K

7z² + 2z + 0 = 0

9θ² + 7θ + 4 = 0

224K

det| 7 4 ; 4 8 | = 40

234K

det| 4 2 ; 5 5 | = 10

N₂ + 3H₂ ⇌ 2NH₃

218K

det| 7 6 ; 1 8 | = 50

354K