Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:48Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
∑_{k=1}^{n} k = n(n+1)/2
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ω = 2πf
det| 1 7 ; 1 2 | = -5
det| 7 7 ; 4 8 | = 28
339K
det| 9 4 ; 1 10 | = 86
177K
∑_{k=1}^{n} k = n(n+1)/2
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∫₀^∞ e^(-α²) dα = √π / 2
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