Pith Number

pith:XWDDSQ2B

pith:2013:XWDDSQ2BXPDESKSV7DDNLAJ7VQ

not attested not anchored not stored refs pending

List H-Coloring a Graph by Removing Few Vertices

Daniel Marx, Laszlo Egri, Rajesh Chitnis

arxiv:1308.1068 v1 · 2013-08-05 · 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{XWDDSQ2BXPDESKSV7DDNLAJ7VQ}

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	2026-05-18T03:16:40.787696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd86394341bbc6492a55f8c6d5813fac267869b077c512666e3fd779bf067175

Aliases

arxiv: 1308.1068 · arxiv_version: 1308.1068v1 · doi: 10.48550/arxiv.1308.1068 · pith_short_12: XWDDSQ2BXPDE · pith_short_16: XWDDSQ2BXPDESKSV · pith_short_8: XWDDSQ2B

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/XWDDSQ2BXPDESKSV7DDNLAJ7VQ \
  | 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: bd86394341bbc6492a55f8c6d5813fac267869b077c512666e3fd779bf067175

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9207574ea4214c82606e08a5ffef551a6fe0dfeafd32cba08714efacf40bc87e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-08-05T18:56:38Z",
    "title_canon_sha256": "76e206355b46a8f870ddf864d13318d8d50ea6414c888f4c0568e95d2ec8197f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1068",
    "kind": "arxiv",
    "version": 1
  }
}