Pith Number

pith:G4WHZXHX

pith:2011:G4WHZXHXPYUMSLJKNO6S3BVHCC

not attested not anchored not stored refs pending

Collective Construction of 2D Block Structures with Holes

Robin Flatland, Zachary Fitzsimmons

arxiv:1104.3847 v1 · 2011-04-19 · cs.CG · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G4WHZXHXPYUMSLJKNO6S3BVHCC}

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	2026-05-18T02:22:02.067110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

372c7cdcf77e28c92d2a6bbd2d86a710a3aa1086e3e02ec27c6440ac5c3c95b1

Aliases

arxiv: 1104.3847 · arxiv_version: 1104.3847v1 · doi: 10.48550/arxiv.1104.3847 · pith_short_12: G4WHZXHXPYUM · pith_short_16: G4WHZXHXPYUMSLJK · pith_short_8: G4WHZXHX

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/G4WHZXHXPYUMSLJKNO6S3BVHCC \
  | 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: 372c7cdcf77e28c92d2a6bbd2d86a710a3aa1086e3e02ec27c6440ac5c3c95b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d20436b4791bb30192f98332643c8f5c088e3b29f43ec2c648138a7299abef67",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-04-19T19:32:11Z",
    "title_canon_sha256": "fd570e4f206e6223416ad85e0d02c1e508f1e9c07f62c4133f449aecc9cd78f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3847",
    "kind": "arxiv",
    "version": 1
  }
}