Pith Number

pith:PR2JNKPS

pith:2025:PR2JNKPS2XCLGUJRF7RPHP3DV6

not attested not anchored not stored refs pending

Treewidth Parameterized by Feedback Vertex Number

Amit Zivan, Hendrik Molter, Meirav Zehavi

arxiv:2504.18302 v3 · 2025-04-25 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PR2JNKPS2XCLGUJRF7RPHP3DV6}

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	2026-05-20T00:05:28.429982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c7496a9f2d5c4b351312fe2f3bf63afbf1818d269fe52b9b222bdb35d30acd5

Aliases

arxiv: 2504.18302 · arxiv_version: 2504.18302v3 · doi: 10.48550/arxiv.2504.18302 · pith_short_12: PR2JNKPS2XCL · pith_short_16: PR2JNKPS2XCLGUJR · pith_short_8: PR2JNKPS

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/PR2JNKPS2XCLGUJRF7RPHP3DV6 \
  | 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: 7c7496a9f2d5c4b351312fe2f3bf63afbf1818d269fe52b9b222bdb35d30acd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb25cad3f8faaa6d6a6aae3e0fb1090e7ca531a29eb139c98bce6e848b9ab6c6",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2025-04-25T12:20:51Z",
    "title_canon_sha256": "5fbe32297773e40e7d48247b87e8477ef21d06e61951a3b0bee8f65642fbd6e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.18302",
    "kind": "arxiv",
    "version": 3
  }
}