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 00:07Z

∑_{k=1}^{n} k = n(n+1)/2

det| 9 8 ; 3 10 | = 66

168K

det| 3 7 ; 2 4 | = -2

446K

3x² + 3x + 6 = 0

11t² + 9t + 5 = 0

144K

Fe₂O₃ + 3CO → 2Fe + 3CO₂

371K

∇²t = 0

\binom{n}{k} = \frac{n!}{k!(n-k)!}

259K

∇ × E = −∂B/∂t

86K

7z² + 2z + 0 = 0

6x² + 6x + 1 = 0

224K

d/dt [t^3] = 3t^2

234K

det| 4 2 ; 5 5 | = 10

8ψ² + 7ψ + 0 = 0

218K

11t² + 9t + 4 = 0

2H₂ + O₂ → 2H₂O

iħ ∂ψ/∂t = Ĥψ

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