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 00:54Z

∑_{k=1}^{n} k = n(n+1)/2

N₂ + 3H₂ ⇌ 2NH₃

168K

2H₂ + O₂ → 2H₂O

446K

3x² + 3x + 6 = 0

d/dx [x^3] = 3x^2

144K

12n² + 2n + 2 = 0

371K

∇²t = 0

∑_{k=1}^{n} k = n(n+1)/2

259K

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

86K

8ψ² + 7ψ + 0 = 0

224K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

234K

iħ ∂ψ/∂t = Ĥψ

218K

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

354K

N₂ + 3H₂ ⇌ 2NH₃

70K

det| 12 9 ; 5 13 | = 111

402K