Pith Number

pith:L4LONP2D

pith:2009:L4LONP2DN3TWATERVSDB6XOAUL

not attested not anchored not stored refs pending

On the homomorphism order of labeled posets

Erkko Lehtonen, Leonard Kwuida

arxiv:0911.0200 v1 · 2009-11-01 · 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{L4LONP2DN3TWATERVSDB6XOAUL}

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	2026-05-18T00:57:38.758892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f16e6bf436ee7604c91ac861f5dc0a2dc1af9fbb3303d5996a86b9bb3bc68e4

Aliases

arxiv: 0911.0200 · arxiv_version: 0911.0200v1 · doi: 10.48550/arxiv.0911.0200 · pith_short_12: L4LONP2DN3TW · pith_short_16: L4LONP2DN3TWATER · pith_short_8: L4LONP2D

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/L4LONP2DN3TWATERVSDB6XOAUL \
  | 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: 5f16e6bf436ee7604c91ac861f5dc0a2dc1af9fbb3303d5996a86b9bb3bc68e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e57786695cad6f322c308be00971129df23a5913a3c425ab28347e6a5d3f1449",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-11-01T20:27:55Z",
    "title_canon_sha256": "ef3d945d64d719e6d763121f189ccd1d033efa580ce52c554e6e89d99f3b1142"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0200",
    "kind": "arxiv",
    "version": 1
  }
}