Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:00Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
66K
∑_{k=1}^{n} k = n(n+1)/2
det| 9 5 ; 6 10 | = 60
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∇²x = 0
det| 9 4 ; 1 10 | = 86
380K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
472K
E = mc²
\binom{n}{k} = \frac{n!}{k!(n-k)!}
392K
∇²φ = 0
\lim_{x\to 0} \frac{\sin x}{x} = 1