Pith Number

pith:C75GSYJ7

pith:2010:C75GSYJ7JN23JLRIP3HDJMYW2O

not attested not anchored not stored refs pending

On a theorem of Eilenberg in simplicial Bredon-Illman cohomology with local coefficients

Debasis Sen, Goutam Mukherjee

arxiv:1004.5597 v2 · 2010-04-30 · 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{C75GSYJ7JN23JLRIP3HDJMYW2O}

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	2026-05-18T02:24:09.715809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17fa69613f4b75b4ae287ece34b316d39803f113d38c199d2fd0a4b1a391366d

Aliases

arxiv: 1004.5597 · arxiv_version: 1004.5597v2 · doi: 10.48550/arxiv.1004.5597 · pith_short_12: C75GSYJ7JN23 · pith_short_16: C75GSYJ7JN23JLRI · pith_short_8: C75GSYJ7

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/C75GSYJ7JN23JLRIP3HDJMYW2O \
  | 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: 17fa69613f4b75b4ae287ece34b316d39803f113d38c199d2fd0a4b1a391366d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "081562308bb68b8a1e25017caa08a1aa049f293b709d6e48feb50a2a83ed4e54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2010-04-30T19:28:54Z",
    "title_canon_sha256": "5dad2b1a728cedc3a932fdd9743ab76082e3e3d9ae59df240a0130d459270b7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.5597",
    "kind": "arxiv",
    "version": 2
  }
}