Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:03Z
∑_{k=1}^{n} k = n(n+1)/2
det| 6 1 ; 2 7 | = 40
168K
3x² + 3x + 6 = 0
\frac{4}{6} \sum_{i=1}^{n} i^{2}
144K
∇²t = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
259K
7z² + 2z + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
224K
\frac{3}{2} \sum_{i=1}^{n} i^{2}
234K
det| 4 2 ; 5 5 | = 10
\lim_{β\to 0} \frac{\sin β}{β} = 1
354K
2H₂ + O₂ → 2H₂O
iħ ∂ψ/∂t = Ĥψ
\lim_{x\to 0} \frac{\sin x}{x} = 1