Pith Number

pith:7C7C4E47

pith:2014:7C7C4E47P7PM4G5ZOBPF4NZ5BR

not attested not anchored not stored refs pending

$\mathcal{D}$-maximal sets

Karen Lange, Peter Cholak, Peter Gerdes

arxiv:1401.1266 v2 · 2014-01-07 · 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{7C7C4E47P7PM4G5ZOBPF4NZ5BR}

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	2026-05-18T02:31:03.997972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8be2e139f7fdece1bb9705e5e373d0c673c5c642ef609802fc792454bb15d96

Aliases

arxiv: 1401.1266 · arxiv_version: 1401.1266v2 · doi: 10.48550/arxiv.1401.1266 · pith_short_12: 7C7C4E47P7PM · pith_short_16: 7C7C4E47P7PM4G5Z · pith_short_8: 7C7C4E47

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/7C7C4E47P7PM4G5ZOBPF4NZ5BR \
  | 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: f8be2e139f7fdece1bb9705e5e373d0c673c5c642ef609802fc792454bb15d96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78a5f9d10eff13bb78c05c47c7f3bf13181d41391befe2b847fbfc7e2142cb80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-01-07T04:22:26Z",
    "title_canon_sha256": "74fc0ed2ab3d611c53748433234ff3067517c2b754077ad9e27f25c37ed9e006"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1266",
    "kind": "arxiv",
    "version": 2
  }
}