Pith Number

pith:QGUCE7FQ

pith:2015:QGUCE7FQ7VB37EBVG4XULUA3UD

not attested not anchored not stored refs pending

Selective versions of chain condition-type properties

Leandro Aurichi, Lyubomyr Zdomskyy, Santi Spadaro

arxiv:1502.00177 v2 · 2015-01-31 · math.GN · math.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QGUCE7FQ7VB37EBVG4XULUA3UD}

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	2026-05-18T02:12:10.861868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81a8227cb0fd43bf9035372f45d01ba0f7f5d9be9a780c02668561955429832c

Aliases

arxiv: 1502.00177 · arxiv_version: 1502.00177v2 · doi: 10.48550/arxiv.1502.00177 · pith_short_12: QGUCE7FQ7VB3 · pith_short_16: QGUCE7FQ7VB37EBV · pith_short_8: QGUCE7FQ

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/QGUCE7FQ7VB37EBVG4XULUA3UD \
  | 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: 81a8227cb0fd43bf9035372f45d01ba0f7f5d9be9a780c02668561955429832c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e027be7bcd73e9fd4fa57f85da6b67f0b6c564d0d3b5c5e42b0ef8b7322957d4",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2015-01-31T23:27:24Z",
    "title_canon_sha256": "eed555ceb1ef0df9287eb0b1ddc22b3f9e6d134b022a76f98932169cf3f2b905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00177",
    "kind": "arxiv",
    "version": 2
  }
}