Pith Number

pith:SCXHVKJ5

pith:2013:SCXHVKJ5ZZC4OP5JJIBVVU6QIP

not attested not anchored not stored refs pending

Unit Grid Intersection Graphs: Recognition and Properties

Irina Musta\c{t}\u{a}, Martin Pergel

arxiv:1306.1855 v1 · 2013-06-07 · math.CO · 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{SCXHVKJ5ZZC4OP5JJIBVVU6QIP}

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	2026-05-18T03:21:23.087450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90ae7aa93dce45c73fa94a035ad3d043df5cae34074bdc26df084071b13a727e

Aliases

arxiv: 1306.1855 · arxiv_version: 1306.1855v1 · doi: 10.48550/arxiv.1306.1855 · pith_short_12: SCXHVKJ5ZZC4 · pith_short_16: SCXHVKJ5ZZC4OP5J · pith_short_8: SCXHVKJ5

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/SCXHVKJ5ZZC4OP5JJIBVVU6QIP \
  | 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: 90ae7aa93dce45c73fa94a035ad3d043df5cae34074bdc26df084071b13a727e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d992e4ec1b8480cc2b6b7578e811de385dd1c851089c1ff38b3945b13050e34e",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-06-07T23:30:26Z",
    "title_canon_sha256": "42e427eebc61848d207eaea64c32937d931908ed483f5696213544cc49643228"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1855",
    "kind": "arxiv",
    "version": 1
  }
}