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
\binom{n}{k} = \frac{n!}{k!(n-k)!}
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
det| 7 2 ; 7 8 | = 42
174K
det| 10 7 ; 3 11 | = 89
61K
∇²x = 0
∫₀^∞ e^(-φ²) dφ = √π / 2
380K
CH₄ + 2O₂ → CO₂ + 2H₂O
335K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
E = mc²
det| 12 9 ; 5 13 | = 111
32K
\lim_{x\to 0} \frac{\sin x}{x} = 1