Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:53Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
168K
det| 9 5 ; 1 10 | = 85
446K
3x² + 3x + 6 = 0
det| 7 4 ; 4 8 | = 40
371K
∇²t = 0
det| 3 7 ; 2 4 | = -2
86K
∑_{k=1}^{n} k = n(n+1)/2
234K