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}
det| 9 4 ; 1 10 | = 86
66K
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
87K
det| 2 7 ; 7 3 | = -43
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
det| 7 6 ; 1 8 | = 50
61K
∇²x = 0
det| 4 6 ; 0 5 | = 20
380K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∇ × E = −∂B/∂t
E = mc²