Pith Number

pith:7MHEBHRL

pith:2018:7MHEBHRLXHH6U7FST33OFXEUFJ

not attested not anchored not stored refs pending

A Duality Based 2-Approximation Algorithm for Maximum Agreement Forest

Anke van Zuylen, Frans Schalekamp, Leen Stougie, Neil Olver, Suzanne van der Ster

arxiv:1811.05916 v1 · 2018-11-14 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7MHEBHRLXHH6U7FST33OFXEUFJ}

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	2026-05-18T00:00:41.845714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb0e409e2bb9cfea7cb29ef6e2dc942a7117923d9e1adedd592721983f1700f6

Aliases

arxiv: 1811.05916 · arxiv_version: 1811.05916v1 · doi: 10.48550/arxiv.1811.05916 · pith_short_12: 7MHEBHRLXHH6 · pith_short_16: 7MHEBHRLXHH6U7FS · pith_short_8: 7MHEBHRL

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/7MHEBHRLXHH6U7FST33OFXEUFJ \
  | 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: fb0e409e2bb9cfea7cb29ef6e2dc942a7117923d9e1adedd592721983f1700f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1f936a3f38ee211b338cccacfeeb57a02abf7954944fdab90ee937bc84f32c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-11-14T17:22:16Z",
    "title_canon_sha256": "2791ac02d911caa49eee908ecd7208f29ebb79dd0faa158623de4324f0ab89ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.05916",
    "kind": "arxiv",
    "version": 1
  }
}