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 00:10Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

det| 12 9 ; 5 13 | = 111

446K

3x² + 3x + 6 = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

144K

N₂ + 3H₂ ⇌ 2NH₃

371K

∇²t = 0

det| 9 5 ; 1 10 | = 85

259K

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

86K

7z² + 2z + 0 = 0

11z² + 3z + 4 = 0

224K

det| 7 4 ; 4 8 | = 40

234K

N₂ + 3H₂ ⇌ 2NH₃

218K