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 00:17Z

∑_{k=1}^{n} k = n(n+1)/2

d/dt [t^3] = 3t^2

168K

10ψ² + 5ψ + 0 = 0

446K

3x² + 3x + 6 = 0

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

144K

8ψ² + 7ψ + 0 = 0

371K

∇²t = 0

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

259K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

86K

7z² + 2z + 0 = 0

8θ² + 8θ + 6 = 0

224K

9ψ² + 7ψ + 3 = 0

234K

∇ × E = −∂B/∂t

218K

det| 2 7 ; 7 3 | = -43

354K