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 06:58Z

det| 3 9 ; 6 4 | = -42

det| 7 4 ; 4 8 | = 40

168K

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

446K

∑_{k=1}^{n} k = n(n+1)/2

N₂ + 3H₂ ⇌ 2NH₃

144K

PV = nRT

371K

2z² + 2z + 5 = 0

CH₄ + 2O₂ → CO₂ + 2H₂O

259K

∇²β = 0

86K

∂γ/∂z = 6γ

224K

2γ² + 5γ + 2 = 0

234K

∑_{k=1}^{n} k = n(n+1)/2

218K

∑_{k=1}^{n} k = n(n+1)/2

354K

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

70K