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
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
87K
\frac{6}{7} \sum_{i=1}^{n} i^{2}
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∇²x = 0
∑_{k=1}^{n} k = n(n+1)/2
380K