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 00:19Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

det| 5 2 ; 3 6 | = 24

446K

3x² + 3x + 6 = 0

∂α/∂ω = 3α

144K

∇ × E = −∂B/∂t

371K

∇²t = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

259K

det| 7 4 ; 4 8 | = 40

86K

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

224K

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

234K

F = G m₁m₂ / r²

218K

∑_{k=1}^{n} k = n(n+1)/2

354K