Pith Number

pith:PYB63X5W

pith:2019:PYB63X5WEEJHXJVQ4SLM32XPON

not attested not anchored not stored refs pending

Sullivan completions

Steve Halperin, Yves Felix

arxiv:1904.08712 v1 · 2019-04-18 · 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{PYB63X5WEEJHXJVQ4SLM32XPON}

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	2026-05-17T23:48:13.274258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e03eddfb621127ba6b0e496cdeaef7347e63fb1cc15c3899f2ad3901ae033c7

Aliases

arxiv: 1904.08712 · arxiv_version: 1904.08712v1 · doi: 10.48550/arxiv.1904.08712 · pith_short_12: PYB63X5WEEJH · pith_short_16: PYB63X5WEEJHXJVQ · pith_short_8: PYB63X5W

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/PYB63X5WEEJHXJVQ4SLM32XPON \
  | 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: 7e03eddfb621127ba6b0e496cdeaef7347e63fb1cc15c3899f2ad3901ae033c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58286df85c50dbfb4f5e932e52e1d0f4c5b4a310d86197f92324fd06ae8e1f41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-04-18T11:57:29Z",
    "title_canon_sha256": "04901ab04318c29e64e59d1207f785ddb55a0499827d3e95aebaea72ca1fc67f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08712",
    "kind": "arxiv",
    "version": 1
  }
}