Pith Number

pith:R3UK4Z5E

pith:2011:R3UK4Z5ERXSYA3AJCXO5LQ2MZM

not attested not anchored not stored refs pending

Measurable events indexed by trees

Konstantinos Tyros, Pandelis Dodos, Vassilis Kanellopoulos

arxiv:1105.2417 v2 · 2011-05-12 · 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{R3UK4Z5ERXSYA3AJCXO5LQ2MZM}

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	2026-05-18T03:45:01.121587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ee8ae67a48de5806c0915ddd5c34ccb0ad3dce989f8f1ca7fdd07d9ef2db9ab

Aliases

arxiv: 1105.2417 · arxiv_version: 1105.2417v2 · doi: 10.48550/arxiv.1105.2417 · pith_short_12: R3UK4Z5ERXSY · pith_short_16: R3UK4Z5ERXSYA3AJ · pith_short_8: R3UK4Z5E

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/R3UK4Z5ERXSYA3AJCXO5LQ2MZM \
  | 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: 8ee8ae67a48de5806c0915ddd5c34ccb0ad3dce989f8f1ca7fdd07d9ef2db9ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51d131dd71f9f27ac544528359dc7b69d5a334073182f05dfaf10c06bc0f8577",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-05-12T10:42:52Z",
    "title_canon_sha256": "8204379a9b4aa9ad74723f08d68965771232a6520ef1b4b697847e7c19927ada"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2417",
    "kind": "arxiv",
    "version": 2
  }
}