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 00:01Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

d/dφ [φ^1] = 1φ^0

446K

3x² + 3x + 6 = 0

∫₀^∞ e^(-ω²) dω = √π / 2

144K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

371K

∇²t = 0

F = G m₁m₂ / r²

259K

det| 7 4 ; 4 8 | = 40

86K

7z² + 2z + 0 = 0

∂z/∂φ = 7z

224K

\frac{4}{9} \sum_{i=1}^{n} i^{2}

234K

det| 4 2 ; 5 5 | = 10

∂n/∂θ = 3n

218K

CH₄ + 2O₂ → CO₂ + 2H₂O

354K

∇ × E = −∂B/∂t

70K