Pith Number

pith:DXSTGNJ5

pith:2019:DXSTGNJ5IBQCXTQDIF5PTGJ6NR

not attested not anchored not stored refs pending

Toward a Dichotomy for Approximation of $H$-coloring

Akbar Rafiey, Arash Rafiey, Thiago Santos

arxiv:1902.02201 v4 · 2019-02-06 · 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{DXSTGNJ5IBQCXTQDIF5PTGJ6NR}

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	2026-07-05T05:17:57.724044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1de533353d40602bce03417af9993e6c5b317ca2f2ee6912764189e178e9bbe0

Aliases

arxiv: 1902.02201 · arxiv_version: 1902.02201v4 · doi: 10.48550/arxiv.1902.02201 · pith_short_12: DXSTGNJ5IBQC · pith_short_16: DXSTGNJ5IBQCXTQD · pith_short_8: DXSTGNJ5

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/DXSTGNJ5IBQCXTQDIF5PTGJ6NR \
  | 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: 1de533353d40602bce03417af9993e6c5b317ca2f2ee6912764189e178e9bbe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b51acdba3e6bbf946be13eee7c31a6243e0f23260ce813f90260b62766d35d2e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-02-06T14:27:25Z",
    "title_canon_sha256": "4dc47f461cd115fe1c59f9091e39a427c5b0c347c24b6efcc90c6a0eb2bf9f99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02201",
    "kind": "arxiv",
    "version": 4
  }
}