Pith Number

pith:2QQRJ2P5

pith:2017:2QQRJ2P5EG73QFXW5YEFBSXZUT

not attested not anchored not stored refs pending

Perfect phylogenies via branchings in acyclic digraphs and a generalization of Dilworth's theorem

Ademir Hujdurovi\'c, Alexandru I. Tomescu, Edin Husi\'c, Martin Milani\v{c}, Romeo Rizzi

arxiv:1701.05492 v3 · 2017-01-19 · cs.DM · cs.CC · cs.DS · math.CO · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2QQRJ2P5EG73QFXW5YEFBSXZUT}

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	2026-05-18T00:24:31.554567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d42114e9fd21bfb816f6ee0850caf9a4c6f0090f4b6c326052acf82f78a6f17c

Aliases

arxiv: 1701.05492 · arxiv_version: 1701.05492v3 · doi: 10.48550/arxiv.1701.05492 · pith_short_12: 2QQRJ2P5EG73 · pith_short_16: 2QQRJ2P5EG73QFXW · pith_short_8: 2QQRJ2P5

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/2QQRJ2P5EG73QFXW5YEFBSXZUT \
  | 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: d42114e9fd21bfb816f6ee0850caf9a4c6f0090f4b6c326052acf82f78a6f17c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16fbac8146d4c599c8e4af779e14448146edc9dd3ac82a446183139fa9f10fc7",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS",
      "math.CO",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-01-19T16:05:48Z",
    "title_canon_sha256": "e954ead1b8883fff8997030a081ca9ffa102c6eab71b44aca079a2a586a83b1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.05492",
    "kind": "arxiv",
    "version": 3
  }
}