Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 17:22Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
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iħ ∂ψ/∂t = Ĥψ
∑_{k=1}^{n} k = n(n+1)/2
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3r² + 6r + 7 = 0
det| 7 4 ; 4 8 | = 40
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∫₀^∞ e^(-t²) dt = √π / 2
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
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