Pith Number

pith:3F3TB7F7

pith:2008:3F3TB7F7E4SQGFXYFPFSKDRVDZ

not attested not anchored not stored refs pending

Universal Khovanov-Rozansky sl(2) cohomology

Carmen Caprau

arxiv:0805.2755 v1 · 2008-05-18 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3F3TB7F7E4SQGFXYFPFSKDRVDZ}

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	2026-05-18T04:35:57.484789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d97730fcbf27250316f82bcb250e351e4d93bdc86bd2582ae4d8a85a8e2b6721

Aliases

arxiv: 0805.2755 · arxiv_version: 0805.2755v1 · doi: 10.48550/arxiv.0805.2755 · pith_short_12: 3F3TB7F7E4SQ · pith_short_16: 3F3TB7F7E4SQGFXY · pith_short_8: 3F3TB7F7

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/3F3TB7F7E4SQGFXYFPFSKDRVDZ \
  | 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: d97730fcbf27250316f82bcb250e351e4d93bdc86bd2582ae4d8a85a8e2b6721

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c196600834901a38af15f8c8b6299f4a85b17daa51d5177fdfdfd0f0d953daa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-05-18T20:56:51Z",
    "title_canon_sha256": "30419823202b992820976ce8c7e3902c69b7e65ce2c5ad60c0ea15356edff237"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.2755",
    "kind": "arxiv",
    "version": 1
  }
}