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 00:10Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

2n² + 4n + 0 = 0

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e^{i\pi} + 1 = 0

371K

∇²t = 0

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

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iħ ∂ψ/∂t = Ĥψ

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7z² + 2z + 0 = 0

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂

224K

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

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det| 4 2 ; 5 5 | = 10

det| 9 4 ; 1 10 | = 86

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∫₀^∞ e^(-θ²) dθ = √π / 2

354K