Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:21Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
66K
det| 11 9 ; 0 12 | = 132
222K
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
87K
\lim_{t\to 0} \frac{\sin t}{t} = 1
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
det| 7 4 ; 4 8 | = 40
174K
det| 9 2 ; 3 10 | = 84
61K
∇²x = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∇ × E = −∂B/∂t
E = mc²