Pith Number

pith:4U6X2GHQ

pith:2014:4U6X2GHQODZA4TXWOUG3HECMAC

not attested not anchored not stored refs pending

Cohomologie des foncteurs polynomiaux sur les groupes libres

Aur\'elien Djament (LMJL), Christine Vespa (IRMA), Teimuraz Pirashvili

arxiv:1409.0629 v1 · 2014-09-02 · math.KT · math.AT · math.CT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4U6X2GHQODZA4TXWOUG3HECMAC}

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	2026-05-18T02:43:46.445610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e53d7d18f070f20e4ef6750db3904c009d5f7f774507fa86000ed67160073a1f

Aliases

arxiv: 1409.0629 · arxiv_version: 1409.0629v1 · doi: 10.48550/arxiv.1409.0629 · pith_short_12: 4U6X2GHQODZA · pith_short_16: 4U6X2GHQODZA4TXW · pith_short_8: 4U6X2GHQ

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/4U6X2GHQODZA4TXWOUG3HECMAC \
  | 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: e53d7d18f070f20e4ef6750db3904c009d5f7f774507fa86000ed67160073a1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c5c810562294e97d7a43ff6fe6025683eba699df0e9e4fabbf0d21b0bec381e",
    "cross_cats_sorted": [
      "math.AT",
      "math.CT",
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2014-09-02T08:37:19Z",
    "title_canon_sha256": "f933d52ed18bffce49eb1d12315344b8aeb88aa6e9c72e4e11bb501f0b4d34df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0629",
    "kind": "arxiv",
    "version": 1
  }
}