Pith Number

pith:444FKXCM

pith:2013:444FKXCMM2MADT2Z46P3RRR62J

not attested not anchored not stored refs pending

Classifying spaces of twisted loop groups

Thomas Baird

arxiv:1312.7450 v2 · 2013-12-28 · 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{444FKXCMM2MADT2Z46P3RRR62J}

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	2026-05-18T01:19:31.002726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e738555c4c669801cf59e79fb8c63ed25339085cec2f145df3cd92906083a4f8

Aliases

arxiv: 1312.7450 · arxiv_version: 1312.7450v2 · doi: 10.48550/arxiv.1312.7450 · pith_short_12: 444FKXCMM2MA · pith_short_16: 444FKXCMM2MADT2Z · pith_short_8: 444FKXCM

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/444FKXCMM2MADT2Z46P3RRR62J \
  | 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: e738555c4c669801cf59e79fb8c63ed25339085cec2f145df3cd92906083a4f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "369501e771196884bebd286ee5a8d4f3297f3a72116b483af7331d314805d913",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-12-28T16:51:56Z",
    "title_canon_sha256": "c738b37ec54df420dfa06dbdc70f49aa8c2be7f60fecb7fcf83f61b1edc02817"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.7450",
    "kind": "arxiv",
    "version": 2
  }
}