Pith Number

pith:X6K5MXRU

pith:2013:X6K5MXRUSM3U6FLUGQL35ZOXNN

not attested not anchored not stored refs pending

Absolutely homotopy-cartesian squares

Rosona Eldred

arxiv:1304.1662 v1 · 2013-04-05 · math.AT · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X6K5MXRUSM3U6FLUGQL35ZOXNN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:28:55.041779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf95d65e3493374f15743417bee5d76b5fcdbca49322f071a5aef15e6e2d0f7c

Aliases

arxiv: 1304.1662 · arxiv_version: 1304.1662v1 · doi: 10.48550/arxiv.1304.1662 · pith_short_12: X6K5MXRUSM3U · pith_short_16: X6K5MXRUSM3U6FLU · pith_short_8: X6K5MXRU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/X6K5MXRUSM3U6FLUGQL35ZOXNN \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: bf95d65e3493374f15743417bee5d76b5fcdbca49322f071a5aef15e6e2d0f7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d71bf03e555287f4b1360d425d1e02e028d55daa6193e56b55dbedc784b21e03",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-04-05T09:53:12Z",
    "title_canon_sha256": "936e285ad4653caedd787478b557b249a8af9db554175a86b6b98b1e2016fb28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1662",
    "kind": "arxiv",
    "version": 1
  }
}