Pith Number

pith:Q5EGJCK4

pith:2010:Q5EGJCK4EXNWYKSLXE4JZ7VDFA

not attested not anchored not stored refs pending

On Bredon (Co-)Homological Dimensions of Groups

Martin Fluch

arxiv:1009.4633 v2 · 2010-09-23 · math.GR · 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{Q5EGJCK4EXNWYKSLXE4JZ7VDFA}

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	2026-05-18T03:46:45.729249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874864895c25db6c2a4bb9389cfea328028d89d05da4aa61471a50f19042b8d6

Aliases

arxiv: 1009.4633 · arxiv_version: 1009.4633v2 · doi: 10.48550/arxiv.1009.4633 · pith_short_12: Q5EGJCK4EXNW · pith_short_16: Q5EGJCK4EXNWYKSL · pith_short_8: Q5EGJCK4

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/Q5EGJCK4EXNWYKSLXE4JZ7VDFA \
  | 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: 874864895c25db6c2a4bb9389cfea328028d89d05da4aa61471a50f19042b8d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c93d2dd45cec7295e9b3f22916788dbc13c7f7235a9b544dd4a08384d15f15d2",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2010-09-23T15:19:40Z",
    "title_canon_sha256": "587e5665cda5015cbcfcf8d571bcfc8aeb1f682c293c5056f1cd5906fdfa12df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4633",
    "kind": "arxiv",
    "version": 2
  }
}