Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 03:30Z
∇ × E = −∂B/∂t
det| 5 6 ; 2 6 | = 18
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
∂x/∂n = 6x
\frac{2}{2} \sum_{i=1}^{n} i^{2}
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\lim_{x\to 0} \frac{\sin x}{x} = 1
\lim_{α\to 0} \frac{\sin α}{α} = 1
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