Pith Number

pith:U4IILLBD

pith:2017:U4IILLBDQCAYZ45HBAN5AQHM5B

not attested not anchored not stored refs pending

Detecting induced subdivision of $K_4$

Ngoc Khang Le

arxiv:1703.04637 v1 · 2017-03-14 · 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{U4IILLBDQCAYZ45HBAN5AQHM5B}

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	2026-05-18T00:48:39.555900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a71085ac2380818cf3a7081bd040ece86ec34596570cd203b375952b18fefeb3

Aliases

arxiv: 1703.04637 · arxiv_version: 1703.04637v1 · doi: 10.48550/arxiv.1703.04637 · pith_short_12: U4IILLBDQCAY · pith_short_16: U4IILLBDQCAYZ45H · pith_short_8: U4IILLBD

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/U4IILLBDQCAYZ45HBAN5AQHM5B \
  | 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: a71085ac2380818cf3a7081bd040ece86ec34596570cd203b375952b18fefeb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd142f6dff82539eb6f380848272cd1acd2bcfeb6604b9072fd6ab75ee8185e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-03-14T18:10:05Z",
    "title_canon_sha256": "2eb28d9107c956690855ddac0ad78c1eaa4515b6b46a5840a2e5fe5f1fa9cda2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.04637",
    "kind": "arxiv",
    "version": 1
  }
}