Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:54Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 3 ; 7 6 | = 9
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3x² + 3x + 6 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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∇²t = 0
∑_{k=1}^{n} k = n(n+1)/2
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7z² + 2z + 0 = 0
det| 7 4 ; 4 8 | = 40
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