Pith Number

pith:UYI4EQB2

pith:2018:UYI4EQB2WUGTW5BZGSDMSOYA5A

not attested not anchored not stored refs pending

The DPG-star method

Brendan Keith, Jay Gopalakrishnan, Leszek Demkowicz

arxiv:1809.03153 v1 · 2018-09-10 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UYI4EQB2WUGTW5BZGSDMSOYA5A}

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	2026-06-04T20:13:18.536135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a611c2403ab50d3b74393486c93b00e833f2936dc558f326ec419ed2d13199dd

Aliases

arxiv: 1809.03153 · arxiv_version: 1809.03153v1 · doi: 10.48550/arxiv.1809.03153 · pith_short_12: UYI4EQB2WUGT · pith_short_16: UYI4EQB2WUGTW5BZ · pith_short_8: UYI4EQB2

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/UYI4EQB2WUGTW5BZGSDMSOYA5A \
  | 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: a611c2403ab50d3b74393486c93b00e833f2936dc558f326ec419ed2d13199dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "560d703ef9cb0c205fdad79df69c9687e655efc631ab2143ea50ea5b30380517",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-10T06:46:30Z",
    "title_canon_sha256": "cbf5a7e7d1735c7b0d7d59b4f1b3129bff98f16345c1e1af6baa12114bbde0eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03153",
    "kind": "arxiv",
    "version": 1
  }
}