Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:22Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
\oint_C \vec{F}\cdot d\vec{r} = 0
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d/dz [z^11] = 11z^10
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∑_{k=1}^{n} k = n(n+1)/2
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∇²x = 0
\lim_{r\to 0} \frac{\sin r}{r} = 1
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∑_{k=1}^{n} k = n(n+1)/2
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det| 11 9 ; 0 12 | = 132
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