recreational-mathematics
an archive of posts in this category
| May 30, 2026 | Cumulative XOR via the shift operator on $\mathbb{F}_2^\infty$ |
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| May 17, 2026 | IMO 1981/2 via generating functions |
| Apr 05, 2026 | SKMO 2026/1 via KKT conditions |
| Apr 18, 2025 | Matrix recurrence for non-backtracking walks |