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 00:51Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

446K

3x² + 3x + 6 = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

144K

iħ ∂ψ/∂t = Ĥψ

371K

∇²t = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

259K

det| 2 8 ; 7 3 | = -50

86K

7z² + 2z + 0 = 0

2H₂ + O₂ → 2H₂O

224K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

234K

det| 9 4 ; 1 10 | = 86

218K

PV = nRT

354K

F = G m₁m₂ / r²

70K