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 00:29Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

N₂ + 3H₂ ⇌ 2NH₃

446K

3x² + 3x + 6 = 0

∫₀^∞ e^(-x²) dx = √π / 2

144K

E = mc²

371K

∇²t = 0

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

259K

∂γ/∂θ = 2γ

86K

7z² + 2z + 0 = 0

∇²r = 0

224K

det| 7 4 ; 4 8 | = 40

234K

det| 4 2 ; 5 5 | = 10

\frac{4}{9} \sum_{i=1}^{n} i^{2}

218K

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

354K

2H₂ + O₂ → 2H₂O

ΔS ≥ 0

70K

det| 4 7 ; 2 5 | = 6

402K

[ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26]