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_{φ\to 0} \frac{\sin φ}{φ} = 1
det| 2 7 ; 7 3 | = -43
61K
∇²x = 0
det| 5 6 ; 2 6 | = 18
335K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 12 9 ; 5 13 | = 111
472K
E = mc²
det| 11 2 ; 5 12 | = 122
392K
∇²φ = 0
\lim_{x\to 0} \frac{\sin x}{x} = 1