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 00:09Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

9θ² + 7θ + 4 = 0

446K

3x² + 3x + 6 = 0

∑_{k=1}^{n} k = n(n+1)/2

144K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

371K

∇²t = 0

det| 9 4 ; 1 10 | = 86

259K

F = G m₁m₂ / r²

86K

7z² + 2z + 0 = 0

det| 4 8 ; 3 5 | = -4

224K

∇²r = 0

234K

det| 4 2 ; 5 5 | = 10

iħ ∂ψ/∂t = Ĥψ

218K

det| 9 6 ; 7 10 | = 48

354K

2H₂ + O₂ → 2H₂O

iħ ∂ψ/∂t = Ĥψ