Pith Number

pith:GMU2AM44

pith:2015:GMU2AM44BQWQD7AVFDQH5MCNIR

not attested not anchored not stored refs pending

Equivariant vector bundles over classifying spaces for proper actions

Dieter Degrijse, Ian J. Leary

arxiv:1504.07358 v3 · 2015-04-28 · math.AT · math.GR · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GMU2AM44BQWQD7AVFDQH5MCNIR}

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	2026-05-18T00:51:18.638266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3329a0339c0c2d01fc1528e07eb04d444bea8b6cf994f2ca7de8c5b35dee5b8a

Aliases

arxiv: 1504.07358 · arxiv_version: 1504.07358v3 · doi: 10.48550/arxiv.1504.07358 · pith_short_12: GMU2AM44BQWQ · pith_short_16: GMU2AM44BQWQD7AV · pith_short_8: GMU2AM44

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/GMU2AM44BQWQD7AVFDQH5MCNIR \
  | 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: 3329a0339c0c2d01fc1528e07eb04d444bea8b6cf994f2ca7de8c5b35dee5b8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90592eb2dcebbb2f67f7e134d0ab94c21fdfd00c65b5ebe12d98d5d68086373e",
    "cross_cats_sorted": [
      "math.GR",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-04-28T06:51:00Z",
    "title_canon_sha256": "ee380cda6596fc55349218dae5eb404a490465b372f801af43615682dd484e6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07358",
    "kind": "arxiv",
    "version": 3
  }
}