Pith Number

pith:6ROAPG36

pith:2017:6ROAPG364Q42I4WFZT2VS2DT4X

not attested not anchored not stored refs pending

Algorithmic complexity of proper labeling problems

Ali Dehghan, Arash Ahadi, Mohammad-Reza Sadeghi

arxiv:1701.06669 v1 · 2017-01-23 · 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{6ROAPG364Q42I4WFZT2VS2DT4X}

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	2026-05-18T00:52:12.408261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f45c079b7ee439a472c5ccf5596873e5cfd8a79d8c5873a540ebd81ce1c7e7e0

Aliases

arxiv: 1701.06669 · arxiv_version: 1701.06669v1 · doi: 10.48550/arxiv.1701.06669 · pith_short_12: 6ROAPG364Q42 · pith_short_16: 6ROAPG364Q42I4WF · pith_short_8: 6ROAPG36

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/6ROAPG364Q42I4WFZT2VS2DT4X \
  | 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: f45c079b7ee439a472c5ccf5596873e5cfd8a79d8c5873a540ebd81ce1c7e7e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89749b928ae2f5788bd1b1e6632daad8b5d5f317fac454882bce265037d6a849",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-01-23T23:00:48Z",
    "title_canon_sha256": "e7db5eda0a4cdbffe56a22588d41d41bcc36061b40f1f5f9e20ddbb305961385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06669",
    "kind": "arxiv",
    "version": 1
  }
}