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 00:05Z

∑_{k=1}^{n} k = n(n+1)/2

\lim_{r\to 0} \frac{\sin r}{r} = 1

168K

det| 7 4 ; 4 8 | = 40

446K

3x² + 3x + 6 = 0

∇ × E = −∂B/∂t

144K

ω = 2πf

371K

∇²t = 0

∇²β = 0

259K

det| 7 7 ; 4 8 | = 28

86K

7z² + 2z + 0 = 0

e^{i\pi} + 1 = 0

224K

∂y/∂n = 5y

234K

det| 12 2 ; 2 13 | = 152

218K

F = G m₁m₂ / r²

354K

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

70K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

402K