ATProto Browser

Record data

{
  "uri": "at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3logflfwxf226",
  "cid": "bafyreif2v7qzfz46rlhmkzk4mjibzetehswzljexfkzxja33zz7xvcfqfe",
  "value": {
    "text": "I think the simplest thing to say (avoiding motivic homotopy) is that the Witt ring of anisotropic quadratic forms (en.wikipedia.org/wiki/Witt_gr...) admits a filtration* whose associated graded equals** Galois cohomology with mod 2 coefficients.",
    "$type": "app.bsky.feed.post",
    "embed": {
      "$type": "app.bsky.embed.external",
      "external": {
        "uri": "https://en.wikipedia.org/wiki/Witt_group",
        "title": "Witt group - Wikipedia",
        "description": ""
      }
    },
    "langs": [
      "en"
    ],
    "reply": {
      "root": {
        "cid": "bafyreiblni3i6zaisxic6wsrbvwloj3ac7cjqrrn24ohnzvoj36ydntc3e",
        "uri": "at://did:plc:7jy6uix2a4zqcurzoxpxok4m/app.bsky.feed.post/3lodtdlwm7s2e"
      },
      "parent": {
        "cid": "bafyreidqexytpvr7gw46qqatlygfi4cbk5n7iuc4f63qpmenehp3j4u3h4",
        "uri": "at://did:plc:rraadtrn2ajoojaeryw6lzot/app.bsky.feed.post/3logetf3jss2c"
      }
    },
    "facets": [
      {
        "index": {
          "byteEnd": 148,
          "byteStart": 116
        },
        "features": [
          {
            "uri": "https://en.wikipedia.org/wiki/Witt_group",
            "$type": "app.bsky.richtext.facet#link"
          }
        ]
      }
    ],
    "createdAt": "2025-05-05T12:46:15.836Z"
  }
}