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 00:03Z

∑_{k=1}^{n} k = n(n+1)/2

Fe₂O₃ + 3CO → 2Fe + 3CO₂

168K

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

446K

3x² + 3x + 6 = 0

3r² + 3r + 7 = 0

144K

∂β/∂β = 6β

371K

∇²t = 0

6ω² + 4ω + 4 = 0

259K

CH₄ + 2O₂ → CO₂ + 2H₂O

86K

7z² + 2z + 0 = 0

∑_{k=1}^{n} k = n(n+1)/2

224K

det| 9 8 ; 3 10 | = 66

234K

det| 4 2 ; 5 5 | = 10

d/dx [x^3] = 3x^2

218K

PV = nRT

354K

2H₂ + O₂ → 2H₂O

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

70K

[ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26]