Pith Number

pith:2UBS7I37

pith:2011:2UBS7I37UTC6Q6X2U4MEBMGG4Q

not attested not anchored not stored refs pending

The largest $n-1$ Hosoya indices of unicyclic graphs

Aleksandar Ilic, Guihai Yu, Lihua Feng

arxiv:1105.5522 v1 · 2011-05-27 · 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{2UBS7I37UTC6Q6X2U4MEBMGG4Q}

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	2026-05-18T04:21:11.440280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5032fa37fa4c5e87afaa71840b0c6e40f115fe844358049a1b91e98f855eefb

Aliases

arxiv: 1105.5522 · arxiv_version: 1105.5522v1 · doi: 10.48550/arxiv.1105.5522 · pith_short_12: 2UBS7I37UTC6 · pith_short_16: 2UBS7I37UTC6Q6X2 · pith_short_8: 2UBS7I37

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/2UBS7I37UTC6Q6X2U4MEBMGG4Q \
  | 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: d5032fa37fa4c5e87afaa71840b0c6e40f115fe844358049a1b91e98f855eefb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47a9b1d629a0281a9d24c9e37356145c9acafbb256c0881eb467115e71e2ccc8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-05-27T10:51:33Z",
    "title_canon_sha256": "52a0c4847524f1dc7eb05ad1c77949345b3dd1e513e867ed1b87729b1fecd83a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5522",
    "kind": "arxiv",
    "version": 1
  }
}