Pith Number

pith:5DENJUYE

pith:2011:5DENJUYENB4QJASH45HOKC4KHB

not attested not anchored not stored refs pending

The nerve of a crossed module

Ivan Yudin

arxiv:1103.6275 v1 · 2011-03-31 · 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{5DENJUYENB4QJASH45HOKC4KHB}

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	2026-05-18T04:25:13.518597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8c8d4d3046879048247e74ee50b8a3861f9168c181698d53fc2b80e472619e0

Aliases

arxiv: 1103.6275 · arxiv_version: 1103.6275v1 · doi: 10.48550/arxiv.1103.6275 · pith_short_12: 5DENJUYENB4Q · pith_short_16: 5DENJUYENB4QJASH · pith_short_8: 5DENJUYE

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/5DENJUYENB4QJASH45HOKC4KHB \
  | 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: e8c8d4d3046879048247e74ee50b8a3861f9168c181698d53fc2b80e472619e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd738eb1f15901871d5356878e58cb6de7f6cbd4df45a087326f63d5d3f36f02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-03-31T19:36:53Z",
    "title_canon_sha256": "655d805e5d1ae59831553e4f1231038d34062b202d47b93714817f5fced22421"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.6275",
    "kind": "arxiv",
    "version": 1
  }
}