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 00:16Z

∑_{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

10γ² + 8γ + 7 = 0

144K

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

371K

∇²t = 0

3z² + 5z + 1 = 0

259K

∇²r = 0

86K

7z² + 2z + 0 = 0

det| 2 7 ; 7 3 | = -43

224K

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

234K

det| 9 4 ; 1 10 | = 86

218K

∫₀^∞ e^(-t²) dt = √π / 2

354K

∑_{k=1}^{n} k = n(n+1)/2

70K