Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:22Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
det| 12 1 ; 4 13 | = 152
66K
∑_{k=1}^{n} k = n(n+1)/2
det| 2 7 ; 7 3 | = -43
87K
\oint_C \vec{F}\cdot d\vec{r} = 0
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\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
61K
∇²x = 0
∫₀^∞ e^(-t²) dt = √π / 2
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