Pith Number

pith:A6UGOHVO

pith:2016:A6UGOHVOO7RWF3HLLH33A5ERFJ

not attested not anchored not stored refs pending

Cospectral digraphs from locally line digraphs

C. Dalf\'o, M.A. Fiol

arxiv:1604.04448 v1 · 2016-04-15 · 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{A6UGOHVOO7RWF3HLLH33A5ERFJ}

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	2026-05-18T01:17:02.188400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07a8671eae77e362eceb59f7b074912a59e1bdceb9984ff090e7515082c8a92d

Aliases

arxiv: 1604.04448 · arxiv_version: 1604.04448v1 · doi: 10.48550/arxiv.1604.04448 · pith_short_12: A6UGOHVOO7RW · pith_short_16: A6UGOHVOO7RWF3HL · pith_short_8: A6UGOHVO

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/A6UGOHVOO7RWF3HLLH33A5ERFJ \
  | 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: 07a8671eae77e362eceb59f7b074912a59e1bdceb9984ff090e7515082c8a92d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c03a1bdf614143c33e80b1154c404ffa803799a622478d7b6276664a8072357",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-04-15T12:05:08Z",
    "title_canon_sha256": "bb489c03292a1d833c4998473a044d1f7bddb4a2f78fa8c80a7b35de8e5a64dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04448",
    "kind": "arxiv",
    "version": 1
  }
}