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{
  "uri": "at://did:plc:g7zfvo5t5ont4ejo4owoaiav/app.bsky.feed.post/3ljltkcns3k2b",
  "cid": "bafyreib6tjijdicedmkeamdhmj2jdagxczziddbfoe7bcmmi6ejcvz4vja",
  "value": {
    "text": "I love how Yoneda is trivial but implies nine bajillion awesome things. I gave a talk today about spin geometry and stiefel whitney classes, and if you think of a characteristic class as a natural transformation Prin_G => H*, then Yoneda says characteristic classes are classified by H*(BG)!",
    "$type": "app.bsky.feed.post",
    "langs": [
      "en"
    ],
    "createdAt": "2025-03-05T01:33:31.760Z"
  }
}