Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:32Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
\lim_{t\to 0} \frac{\sin t}{t} = 1
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∑_{k=1}^{n} k = n(n+1)/2
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ω = 2πf
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 1 7 ; 1 2 | = -5
\frac{8}{7} \sum_{i=1}^{n} i^{2}
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det| 9 4 ; 1 10 | = 86
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\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
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∑_{k=1}^{n} k = n(n+1)/2
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