Pith Number

pith:4IHATTH2

pith:2015:4IHATTH2QBTQI5TLW4HCFGKX2P

not attested not anchored not stored refs pending

A Characterization of Visibility Graphs for Pseudo-Polygons

Erik Krohn, Matt Gibson, Qing Wang

arxiv:1504.06350 v1 · 2015-04-23 · 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{4IHATTH2QBTQI5TLW4HCFGKX2P}

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	2026-05-18T02:17:53.895794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e20e09ccfa806704766bb70e229957d3e851fb2730895a0acd668dbf5d72f064

Aliases

arxiv: 1504.06350 · arxiv_version: 1504.06350v1 · doi: 10.48550/arxiv.1504.06350 · pith_short_12: 4IHATTH2QBTQ · pith_short_16: 4IHATTH2QBTQI5TL · pith_short_8: 4IHATTH2

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/4IHATTH2QBTQI5TLW4HCFGKX2P \
  | 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: e20e09ccfa806704766bb70e229957d3e851fb2730895a0acd668dbf5d72f064

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ba061ade88dee5a10c5170b0b6bee80eabbbe07aa6bfe91a9b61b3895445147",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-04-23T21:43:48Z",
    "title_canon_sha256": "face530b7819383d51f8e2d847dbc6731ca61afe0c0dcc82679c3e14c19de55d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06350",
    "kind": "arxiv",
    "version": 1
  }
}