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 00:04Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

∇ × E = −∂B/∂t

144K

∂β/∂β = 6β

371K

∇²t = 0

d/dφ [φ^1] = 1φ^0

259K

det| 8 3 ; 5 9 | = 57

86K

7z² + 2z + 0 = 0

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

224K

∂z/∂ψ = 1z

234K

det| 4 2 ; 5 5 | = 10

det| 4 2 ; 6 5 | = 8

218K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

354K

2H₂ + O₂ → 2H₂O

e^{i\pi} + 1 = 0

70K