2026年4月のノート
今月の余暇ノート。タットの定理（s-弧推移的な有限3次グラフはs ≤ 5）の証明をビッグスの『代数的グラフ理論』で学び、詳細に18ページのノートにまとめた。また、群論の剰余類に関する初等的な結果を再考し、その証明を整理。加えて、分散型・自己ホスト型ウェブコンソール「Wander Console」のアップデート（ネットワーククローラー機能など）や、Debian端末でのCtrl+Oによる出力破棄の挙動差についても記録している。
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