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 04:18Z

12r² + 6r + 1 = 0

1n² + 7n + 3 = 0

168K

F = G m₁m₂ / r²

446K

∑_{k=1}^{n} k = n(n+1)/2

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

144K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

371K

4t² + 9t + 6 = 0

9ψ² + 7ψ + 3 = 0

259K

det| 7 4 ; 4 8 | = 40

86K

∇²ψ = 0

∇ × E = −∂B/∂t

224K

∂ψ/∂β = 3ψ

234K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

218K

det| 2 7 ; 7 3 | = -43

354K