Pith Number

pith:MJR2PZCO

pith:2009:MJR2PZCOSPQYMKJD7RVF4I4TTC

not attested not anchored not stored refs pending

Notes on large angle crossing graphs

Joachim Gudmundsson, Pat Morin, Thomas Wolle, Vida Dujmovic

arxiv:0908.3545 v2 · 2009-08-25 · cs.DS · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MJR2PZCOSPQYMKJD7RVF4I4TTC}

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	2026-05-18T03:31:31.219310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6263a7e44e93e1862923fc6a5e2393988d9ae8f6a8658a52168db64f431778d0

Aliases

arxiv: 0908.3545 · arxiv_version: 0908.3545v2 · doi: 10.48550/arxiv.0908.3545 · pith_short_12: MJR2PZCOSPQY · pith_short_16: MJR2PZCOSPQYMKJD · pith_short_8: MJR2PZCO

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/MJR2PZCOSPQYMKJD7RVF4I4TTC \
  | 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: 6263a7e44e93e1862923fc6a5e2393988d9ae8f6a8658a52168db64f431778d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b9492254bd2014a072fcaff4d5337a14dce48c9891fe81845847345d5fbc8bf",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-08-25T06:21:41Z",
    "title_canon_sha256": "96ca2525f63cc093efb070e546ec922b86873d8bc8a98e2f41edf3931c360a5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3545",
    "kind": "arxiv",
    "version": 2
  }
}