Pith Number

pith:34Z33QKO

pith:2008:34Z33QKO3GHDLC3Y3K4OBYD75A

not attested not anchored not stored refs pending

Untangling polygons and graphs

Josef Cibulka

arxiv:0802.1312 v2 · 2008-02-10 · cs.CG · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{34Z33QKO3GHDLC3Y3K4OBYD75A}

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	2026-05-18T04:30:04.064466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df33bdc14ed98e358b78dab8e0e07fe83004a1d94367add64cdc9e754b4af40f

Aliases

arxiv: 0802.1312 · arxiv_version: 0802.1312v2 · doi: 10.48550/arxiv.0802.1312 · pith_short_12: 34Z33QKO3GHD · pith_short_16: 34Z33QKO3GHDLC3Y · pith_short_8: 34Z33QKO

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/34Z33QKO3GHDLC3Y3K4OBYD75A \
  | 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: df33bdc14ed98e358b78dab8e0e07fe83004a1d94367add64cdc9e754b4af40f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3afa4e7a05cac40f20cd34ea7d3b530017f1a09b84021f8d0df4f4d6fd6554f8",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2008-02-10T09:28:15Z",
    "title_canon_sha256": "21ec41fe30ce811629b9da05da7c7329cc284c343605e454b9aec2847ac9f320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.1312",
    "kind": "arxiv",
    "version": 2
  }
}