Pith Number

pith:4MWQUSB7

pith:2013:4MWQUSB74TORUR3ZY5OEKUGKCZ

not attested not anchored not stored refs pending

The Complexity of the Proper Orientation Number

Ali Dehghan, Arash Ahadi

arxiv:1305.6432 v1 · 2013-05-28 · cs.CC · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4MWQUSB74TORUR3ZY5OEKUGKCZ}

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	2026-05-18T02:50:22.968950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e32d0a483fe4dd1a4779c75c4550ca165cd0fa68e4429fadf62177a23f1f2ee4

Aliases

arxiv: 1305.6432 · arxiv_version: 1305.6432v1 · doi: 10.48550/arxiv.1305.6432 · pith_short_12: 4MWQUSB74TOR · pith_short_16: 4MWQUSB74TORUR3Z · pith_short_8: 4MWQUSB7

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/4MWQUSB74TORUR3ZY5OEKUGKCZ \
  | 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: e32d0a483fe4dd1a4779c75c4550ca165cd0fa68e4429fadf62177a23f1f2ee4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb266b357cd5fff4e915ecd578441537f396c1f23f3a74c9a8cd43cce23a09fe",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-05-28T09:44:45Z",
    "title_canon_sha256": "97ddc69ec5c06ea92ed1ecfe17f1572a1d290683ac835ba9c26571797145e909"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6432",
    "kind": "arxiv",
    "version": 1
  }
}