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 00:02Z

∑_{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

det| 3 6 ; 0 4 | = 12

144K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

371K

∇²t = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

259K

6r² + 3r + 1 = 0

86K

7z² + 2z + 0 = 0

det| 2 7 ; 7 3 | = -43

224K

det| 7 4 ; 4 8 | = 40

234K

N₂ + 3H₂ ⇌ 2NH₃

218K