Pith Number

pith:SY7F6ST7

pith:2014:SY7F6ST7T5PNUPJTLSFD2FLPR7

not attested not anchored not stored refs pending

Yoneda lemma for complete Segal spaces

David Kazhdan, Yakov Varshavsky

arxiv:1401.5656 v2 · 2014-01-22 · math.CT · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SY7F6ST7T5PNUPJTLSFD2FLPR7}

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	2026-05-18T02:59:47.292079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

963e5f4a7f9f5eda3d335c8a3d156f8fd942ccae9ce1086624c3604150141157

Aliases

arxiv: 1401.5656 · arxiv_version: 1401.5656v2 · doi: 10.48550/arxiv.1401.5656 · pith_short_12: SY7F6ST7T5PN · pith_short_16: SY7F6ST7T5PNUPJT · pith_short_8: SY7F6ST7

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/SY7F6ST7T5PNUPJTLSFD2FLPR7 \
  | 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: 963e5f4a7f9f5eda3d335c8a3d156f8fd942ccae9ce1086624c3604150141157

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d6fde4a16c0328ef37508f09cfadb02dfee7d3001d60a01618c9d106ced6a8d",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2014-01-22T13:17:16Z",
    "title_canon_sha256": "866937179222983060f9d61a4b37165822aa74e2856ddd6e22308df6e36296a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5656",
    "kind": "arxiv",
    "version": 2
  }
}