Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:19Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
\lim_{r\to 0} \frac{\sin r}{r} = 1
174K
\frac{11}{6} \sum_{i=1}^{n} i^{2}
61K
∇²x = 0
det| 9 4 ; 1 10 | = 86
335K