Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:21Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
446K
3x² + 3x + 6 = 0
det| 5 3 ; 7 6 | = 9
371K
∇²t = 0
7z² + 2z + 0 = 0
det| 4 2 ; 5 5 | = 10
11t² + 9t + 4 = 0
2H₂ + O₂ → 2H₂O