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 00:15Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

det| 4 8 ; 3 5 | = -4

446K

3x² + 3x + 6 = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

144K

det| 9 4 ; 1 10 | = 86

371K

∇²t = 0

∇²r = 0

259K

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

86K

7z² + 2z + 0 = 0

det| 10 2 ; 3 11 | = 104

224K

∑_{k=1}^{n} k = n(n+1)/2

234K

E = mc²

218K

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

354K

det| 8 9 ; 4 9 | = 36

70K