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 13:00Z

det| 11 7 ; 6 12 | = 90

∇ × E = −∂B/∂t

168K

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

446K

d/dy [y^12] = 12y^11

\frac{4}{6} \sum_{i=1}^{n} i^{2}

144K

∑_{k=1}^{n} k = n(n+1)/2

371K

9n² + 8n + 0 = 0

det| 3 1 ; 7 4 | = 5

259K

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

86K

d/dt [t^5] = 5t^4

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

224K

∑_{k=1}^{n} k = n(n+1)/2

234K

∇²t = 0

8ψ² + 7ψ + 0 = 0

218K

det| 7 9 ; 1 8 | = 47

354K

8n² + 2n + 0 = 0