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

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

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

det| 2 7 ; 7 3 | = -43

144K

det| 11 9 ; 0 12 | = 132

371K

∇²t = 0

F = G m₁m₂ / r²

259K

iħ ∂ψ/∂t = Ĥψ

86K

7z² + 2z + 0 = 0

det| 7 4 ; 4 8 | = 40

224K

N₂ + 3H₂ ⇌ 2NH₃

234K

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

218K

∫₀^∞ e^(-θ²) dθ = √π / 2

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∇ × E = −∂B/∂t

70K