Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:07Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
446K
3x² + 3x + 6 = 0
det| 9 4 ; 1 10 | = 86
144K
det| 11 4 ; 5 12 | = 112
371K
∇²t = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
259K
7z² + 2z + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
224K
∑_{k=1}^{n} k = n(n+1)/2
234K
det| 4 2 ; 5 5 | = 10
\frac{12}{6} \sum_{i=1}^{n} i^{2}
218K
11t² + 9t + 4 = 0
2H₂ + O₂ → 2H₂O
iħ ∂ψ/∂t = Ĥψ
\lim_{x\to 0} \frac{\sin x}{x} = 1
11θ² + 6θ + 7 = 0