Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
168K
3x² + 3x + 6 = 0
det| 12 1 ; 5 13 | = 151
144K
det| 9 4 ; 1 10 | = 86
371K
∇²t = 0
CH₄ + 2O₂ → CO₂ + 2H₂O
259K
det| 10 7 ; 3 11 | = 89
224K
det| 5 9 ; 7 6 | = -33
354K