Pith Number

pith:HGB4PAU2

pith:2011:HGB4PAU2WJOYAV5PUCLLNOWWAV

not attested not anchored not stored refs pending

Eccentric Connectivity Index of Chemical Trees

Aleksandar Ili\' c, Ivan Gutman

arxiv:1104.3206 v1 · 2011-04-16 · 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{HGB4PAU2WJOYAV5PUCLLNOWWAV}

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	2026-05-18T04:24:05.596117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3983c7829ab25d8057afa096b6bad6055329ca2bece89917088557b05146ea5a

Aliases

arxiv: 1104.3206 · arxiv_version: 1104.3206v1 · doi: 10.48550/arxiv.1104.3206 · pith_short_12: HGB4PAU2WJOY · pith_short_16: HGB4PAU2WJOYAV5P · pith_short_8: HGB4PAU2

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/HGB4PAU2WJOYAV5PUCLLNOWWAV \
  | 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: 3983c7829ab25d8057afa096b6bad6055329ca2bece89917088557b05146ea5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9af2656c68af6852f3cdca59baa698f5382c5f848ee06397f125416935ca5d6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-04-16T07:59:36Z",
    "title_canon_sha256": "5daed272ee84957f44343fbd3b81e9cb6ae1fbdab9a184ceb859c8bfcfabbd44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3206",
    "kind": "arxiv",
    "version": 1
  }
}