Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 16:37Z
∑_{k=1}^{n} k = n(n+1)/2
det| 8 9 ; 3 9 | = 45
det| 4 6 ; 4 5 | = -4
90K
E = mc²
det| 10 1 ; 6 11 | = 104
det| 9 4 ; 1 10 | = 86
211K
det| 2 6 ; 5 3 | = -24
∑_{k=1}^{n} k = n(n+1)/2
390K