Pith Number

pith:YCK6X5BN

pith:2015:YCK6X5BN3B6XCG2CWJMKCY6YWB

not attested not anchored not stored refs pending

Characterizing N+-perfect line graphs

A. Wagler, G. Nasini, M. Escalante

arxiv:1505.04072 v1 · 2015-05-15 · 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{YCK6X5BN3B6XCG2CWJMKCY6YWB}

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	2026-05-18T02:09:40.216218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c095ebf42dd87d711b42b258a163d8b057d2d4c6a3de9dd121a3213d2f1cc7a1

Aliases

arxiv: 1505.04072 · arxiv_version: 1505.04072v1 · doi: 10.48550/arxiv.1505.04072 · pith_short_12: YCK6X5BN3B6X · pith_short_16: YCK6X5BN3B6XCG2C · pith_short_8: YCK6X5BN

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/YCK6X5BN3B6XCG2CWJMKCY6YWB \
  | 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: c095ebf42dd87d711b42b258a163d8b057d2d4c6a3de9dd121a3213d2f1cc7a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba34e3bdf9c19a0abe26e1d52db08fe916b9872c606f966909fef7f76dd1e902",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-05-15T14:24:34Z",
    "title_canon_sha256": "80d434b0fb3f2021860417861f5b6cbe153c56e4c70cc01b1a458bc4102f7a06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04072",
    "kind": "arxiv",
    "version": 1
  }
}