Pith Number

pith:VI4QE2PR

pith:2022:VI4QE2PRXEDA554VUNCYKYUS4J

not attested not anchored not stored refs pending

MAT-free graphic arrangements and a characterization of strongly chordal graphs by edge-labeling

Shuhei Tsujie, Tan Nhat Tran

arxiv:2204.08878 v1 · 2022-04-19 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VI4QE2PRXEDA554VUNCYKYUS4J}

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	2026-07-05T04:16:08.332374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa390269f1b9060ef795a345856292e27f56089d0b3e70e3d813d78f186c136f

Aliases

arxiv: 2204.08878 · arxiv_version: 2204.08878v1 · doi: 10.48550/arxiv.2204.08878 · pith_short_12: VI4QE2PRXEDA · pith_short_16: VI4QE2PRXEDA554V · pith_short_8: VI4QE2PR

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/VI4QE2PRXEDA554VUNCYKYUS4J \
  | 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: aa390269f1b9060ef795a345856292e27f56089d0b3e70e3d813d78f186c136f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aed6e90385c26e81cbc82e30e8b375b04507e1a870ff6f46dce15eddc64d3a38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-04-19T13:22:09Z",
    "title_canon_sha256": "9dca14063c16b1db6db2eb6aca461b0ce4c41b02d6ad9d43ddd2abf02bdd0844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.08878",
    "kind": "arxiv",
    "version": 1
  }
}