Pith Number

pith:X6QP6REH

pith:2017:X6QP6REHC32TXTQD2CHQ5XXYDA

not attested not anchored not stored refs pending

Treewidth distance on phylogenetic trees

Georgios Stamoulis, Steven Kelk, Taoyang Wu

arxiv:1703.10840 v1 · 2017-03-31 · cs.DM · cs.DS · 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{X6QP6REHC32TXTQD2CHQ5XXYDA}

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	2026-05-18T00:47:32.562197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfa0ff448716f53bce03d08f0edef818255613c7e1ba8badb29ae9ac353167f1

Aliases

arxiv: 1703.10840 · arxiv_version: 1703.10840v1 · doi: 10.48550/arxiv.1703.10840 · pith_short_12: X6QP6REHC32T · pith_short_16: X6QP6REHC32TXTQD · pith_short_8: X6QP6REH

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/X6QP6REHC32TXTQD2CHQ5XXYDA \
  | 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: bfa0ff448716f53bce03d08f0edef818255613c7e1ba8badb29ae9ac353167f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8c975bb9834f5ef2ced7ba34d387634144357642a18b58b746b478cc7e3aa82",
    "cross_cats_sorted": [
      "cs.DS",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-03-31T10:33:24Z",
    "title_canon_sha256": "81b43f434b263b5d18325696464535ff2acd354d65e894d5ecd2e381f0c445bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10840",
    "kind": "arxiv",
    "version": 1
  }
}