Pith Number

pith:YGIGNI46

pith:2011:YGIGNI46YA56W2IYFXT3DRWXFD

not attested not anchored not stored refs pending

Spaces with Noetherian cohomology

Alain Jeanneret, Jerome Scherer, Kasper K. S. Andersen, Natalia Castellana, Vincent Franjou

arxiv:1102.2755 v2 · 2011-02-14 · 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{YGIGNI46YA56W2IYFXT3DRWXFD}

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	2026-05-18T02:20:29.228330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c19066a39ec03beb69182de7b1c6d728e4f2e0a16a2fa6b4a9ff0654e61f4a74

Aliases

arxiv: 1102.2755 · arxiv_version: 1102.2755v2 · doi: 10.48550/arxiv.1102.2755 · pith_short_12: YGIGNI46YA56 · pith_short_16: YGIGNI46YA56W2IY · pith_short_8: YGIGNI46

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/YGIGNI46YA56W2IYFXT3DRWXFD \
  | 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: c19066a39ec03beb69182de7b1c6d728e4f2e0a16a2fa6b4a9ff0654e61f4a74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ec28a50b51c4f8384b4a044a7753d70bcc8db234ee183a6f6a31cc4a4e623a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-02-14T13:00:11Z",
    "title_canon_sha256": "dbd8703fdb23810496478e29f256d535d7707f956d3c2f0392cbe7dfc62344e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2755",
    "kind": "arxiv",
    "version": 2
  }
}