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

9θ² + 7θ + 4 = 0

168K

11ψ² + 6ψ + 2 = 0

446K

3x² + 3x + 6 = 0

det| 3 1 ; 7 4 | = 5

144K

AgNO₃ + NaCl → AgCl↓ + NaNO₃

371K

∇²t = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

259K

∇ × E = −∂B/∂t

86K

7z² + 2z + 0 = 0

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

224K

d/dφ [φ^11] = 11φ^10

234K

det| 4 2 ; 5 5 | = 10

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

218K