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 00:15Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

iħ ∂ψ/∂t = Ĥψ

446K

3x² + 3x + 6 = 0

det| 9 4 ; 1 10 | = 86

144K

ω = 2πf

371K

∇²t = 0

8γ² + 1γ + 1 = 0

259K

∇²z = 0

86K

7z² + 2z + 0 = 0

∂γ/∂θ = 2γ

224K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

234K

∇²r = 0

218K

F = G m₁m₂ / r²

354K

PV = nRT

70K

∑_{k=1}^{n} k = n(n+1)/2

402K