Pith Number

pith:AZ5LWOKL

pith:2019:AZ5LWOKLQ56L7HUNUUSSFFNGAB

not attested not anchored not stored refs pending

Learning chordal extensions

Andrea Lodi, Defeng Liu, Mathieu Tanneau

arxiv:1910.07600 v1 · 2019-10-16 · cs.LG · math.OC · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AZ5LWOKLQ56L7HUNUUSSFFNGAB}

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	2026-07-05T00:12:38.646865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

067abb394b877cbf9e8da5252295a60049e47d48b977419bccba3efb51fe3907

Aliases

arxiv: 1910.07600 · arxiv_version: 1910.07600v1 · doi: 10.48550/arxiv.1910.07600 · pith_short_12: AZ5LWOKLQ56L · pith_short_16: AZ5LWOKLQ56L7HUN · pith_short_8: AZ5LWOKL

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/AZ5LWOKLQ56L7HUNUUSSFFNGAB \
  | 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: 067abb394b877cbf9e8da5252295a60049e47d48b977419bccba3efb51fe3907

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b816b333ff551ab6a7d97ad4a18135f7d86f16a58ef1911e1ce0502a045f474",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-10-16T20:25:45Z",
    "title_canon_sha256": "ff9a8dc857fdd827654b160680b5e5eb69fbff6c6dce932bc9fcfeafc76f6e1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.07600",
    "kind": "arxiv",
    "version": 1
  }
}