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

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

446K

3x² + 3x + 6 = 0

d/dψ [ψ^7] = 7ψ^6

144K

det| 9 4 ; 1 10 | = 86

371K

∇²t = 0

∫₀^∞ e^(-x²) dx = √π / 2

259K

11t² + 9t + 7 = 0

86K

7z² + 2z + 0 = 0

∑_{k=1}^{n} k = n(n+1)/2

224K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

234K

ΔS ≥ 0

218K

e^{i\pi} + 1 = 0

354K

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

70K