Pith Number

pith:CTKMV25I

pith:2009:CTKMV25IVCNHAKMJYJKK3JFAQV

not attested not anchored not stored refs pending

On Sum--Connectivity Index of Bicyclic Graphs

Bo Zhou, Zhibin Du

arxiv:0909.4577 v1 · 2009-09-24 · 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{CTKMV25IVCNHAKMJYJKK3JFAQV}

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	2026-05-18T04:01:26.698182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14d4caeba8a89a702989c254ada4a0856234c23602ae9b663bd7c225c1759238

Aliases

arxiv: 0909.4577 · arxiv_version: 0909.4577v1 · doi: 10.48550/arxiv.0909.4577 · pith_short_12: CTKMV25IVCNH · pith_short_16: CTKMV25IVCNHAKMJ · pith_short_8: CTKMV25I

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/CTKMV25IVCNHAKMJYJKK3JFAQV \
  | 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: 14d4caeba8a89a702989c254ada4a0856234c23602ae9b663bd7c225c1759238

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6af06f35e6f76ec23d1436e5c93ae98267381692135aee426a963c7e5c3dad22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-09-24T23:55:15Z",
    "title_canon_sha256": "eee907422c3ade9101f69f2bad9e861307ced60d7f4fda3421467aa9895ffe3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4577",
    "kind": "arxiv",
    "version": 1
  }
}