Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:31Z
d/dn [n^4] = 4n^3
∫₀^∞ e^(-ψ²) dψ = √π / 2
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\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
iħ ∂ψ/∂t = Ĥψ
∑_{k=1}^{n} k = n(n+1)/2
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\frac{2}{4} \sum_{i=1}^{n} i^{2}
det| 2 3 ; 5 3 | = -9
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det| 8 9 ; 4 9 | = 36
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