Pith Number

pith:G6CGY45L

pith:2012:G6CGY45LJGUY7C4OL3KWDOSMRP

not attested not anchored not stored refs pending

Categorical models for equivariant classifying spaces

B. J. Guillou, J. P. May, M. Merling

arxiv:1201.5178 v2 · 2012-01-25 · 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{G6CGY45LJGUY7C4OL3KWDOSMRP}

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	2026-05-18T00:21:01.175893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37846c73ab49a98f8b8e5ed561ba4c8befd42360e3c80ff6ab44fda48e55d4e5

Aliases

arxiv: 1201.5178 · arxiv_version: 1201.5178v2 · doi: 10.48550/arxiv.1201.5178 · pith_short_12: G6CGY45LJGUY · pith_short_16: G6CGY45LJGUY7C4O · pith_short_8: G6CGY45L

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/G6CGY45LJGUY7C4OL3KWDOSMRP \
  | 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: 37846c73ab49a98f8b8e5ed561ba4c8befd42360e3c80ff6ab44fda48e55d4e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "189b578329f1dcf11610dc28defa176c8069c765f7a8c2a7e1c3ebe0e7e1c4ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-01-25T03:53:41Z",
    "title_canon_sha256": "7c3efbf874ede854a6655ffaef9fdfde071d26df477d3880c2236ea72f73e138"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5178",
    "kind": "arxiv",
    "version": 2
  }
}