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 00:06Z

∑_{k=1}^{n} k = n(n+1)/2

det| 8 9 ; 4 9 | = 36

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

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

144K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

371K

∇²t = 0

iħ ∂ψ/∂t = Ĥψ

259K

det| 11 4 ; 5 12 | = 112

86K

8x² + 2x + 7 = 0

224K

det| 9 4 ; 1 10 | = 86

234K

E = mc²

218K

∫₀^∞ e^(-t²) dt = √π / 2

354K

∑_{k=1}^{n} k = n(n+1)/2

70K

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

402K