Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 17:40Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
iħ ∂ψ/∂t = Ĥψ
det| 7 2 ; 7 8 | = 42
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3r² + 6r + 7 = 0
det| 1 4 ; 3 2 | = -10
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det| 7 4 ; 4 8 | = 40
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E = mc²
CH₄ + 2O₂ → CO₂ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
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