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 00:51Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

det| 9 4 ; 1 10 | = 86

446K

3x² + 3x + 6 = 0

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

144K

6r² + 3r + 1 = 0

371K

∇²t = 0

iħ ∂ψ/∂t = Ĥψ

259K

det| 5 6 ; 2 6 | = 18

86K

7z² + 2z + 0 = 0

∫₀^∞ e^(-t²) dt = √π / 2

224K

∂α/∂ω = 3α

234K

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

218K