Pith Number

pith:H5EQZ6EH

pith:2014:H5EQZ6EHD37GLX4DJESR3XXOP5

not attested not anchored not stored refs pending

Point visibility graph recognition is NP-hard

Bodhayan Roy

arxiv:1406.2428 v2 · 2014-06-10 · cs.CG · cs.CC · 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{H5EQZ6EHD37GLX4DJESR3XXOP5}

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	2026-05-18T01:15:39.053788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f490cf8871efe65df8349251ddeee7f52e77bd033370a0a633c928d8be67b74

Aliases

arxiv: 1406.2428 · arxiv_version: 1406.2428v2 · doi: 10.48550/arxiv.1406.2428 · pith_short_12: H5EQZ6EHD37G · pith_short_16: H5EQZ6EHD37GLX4D · pith_short_8: H5EQZ6EH

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/H5EQZ6EHD37GLX4DJESR3XXOP5 \
  | 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: 3f490cf8871efe65df8349251ddeee7f52e77bd033370a0a633c928d8be67b74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ffbf82d0237ba1c8a2988e661bdc2480e4647b878245d370b23f5c10a66fb2d",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-06-10T06:05:59Z",
    "title_canon_sha256": "dcfb1f78d2f224d4a5c3de4a5d4fb8fce9f286d4038d4039ce9a51b8dc9b7eec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.2428",
    "kind": "arxiv",
    "version": 2
  }
}