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 00:53Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

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

446K

3x² + 3x + 6 = 0

λ = h/p

144K

∇²ω = 0

371K

∇²t = 0

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

259K

det| 7 9 ; 1 8 | = 47

86K

8ψ² + 7ψ + 0 = 0

224K

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

234K

iħ ∂ψ/∂t = Ĥψ

218K

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

354K

∇ × E = −∂B/∂t

70K

det| 11 4 ; 5 12 | = 112

402K