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}
∑_{k=1}^{n} k = n(n+1)/2
det| 4 6 ; 4 5 | = -4
87K
∑_{k=1}^{n} k = n(n+1)/2
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∇²x = 0
∑_{k=1}^{n} k = n(n+1)/2
380K
det| 11 2 ; 5 12 | = 122
119K
∫₀^∞ e^(-x²) dx = √π / 2
472K