Pith Number

pith:QWKBYURF

pith:2011:QWKBYURFRIEYWGDBJZWJFOPE2V

not attested not anchored not stored refs pending

Note on PI and Szeged indices

Aleksandar Ili\' c

arxiv:1103.2513 v1 · 2011-03-13 · 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{QWKBYURFRIEYWGDBJZWJFOPE2V}

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	2026-05-18T04:26:55.137113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85941c52258a098b18614e6c92b9e4d547bbdf6c149d0d493f915bbc5ac91f8f

Aliases

arxiv: 1103.2513 · arxiv_version: 1103.2513v1 · doi: 10.48550/arxiv.1103.2513 · pith_short_12: QWKBYURFRIEY · pith_short_16: QWKBYURFRIEYWGDB · pith_short_8: QWKBYURF

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/QWKBYURFRIEYWGDBJZWJFOPE2V \
  | 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: 85941c52258a098b18614e6c92b9e4d547bbdf6c149d0d493f915bbc5ac91f8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2d169cb9366c4ed74e2e5bc72694a0d1a4444ae4d3c0da5343ebec27c3dbbe6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-03-13T12:32:48Z",
    "title_canon_sha256": "e75a8c8558e40766648931a87e5d287a0e2eb73ec6ea3c11a36b42404d0e634c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.2513",
    "kind": "arxiv",
    "version": 1
  }
}