Pith Number

pith:2INVX65A

pith:2017:2INVX65AEJJZRJV6OVL4OQ3LZJ

not attested not anchored not stored refs pending

Costas cubes

Jonathan Jedwab, Lily Yen

arxiv:1702.05473 v2 · 2017-02-17 · math.CO · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2INVX65AEJJZRJV6OVL4OQ3LZJ}

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	2026-05-18T00:38:41.764700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d21b5bfba0225398a6be7557c7436bca4fd78b1841ec6b2c762a40ec9d1509c3

Aliases

arxiv: 1702.05473 · arxiv_version: 1702.05473v2 · doi: 10.48550/arxiv.1702.05473 · pith_short_12: 2INVX65AEJJZ · pith_short_16: 2INVX65AEJJZRJV6 · pith_short_8: 2INVX65A

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/2INVX65AEJJZRJV6OVL4OQ3LZJ \
  | 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: d21b5bfba0225398a6be7557c7436bca4fd78b1841ec6b2c762a40ec9d1509c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca1b981bdca5cb574d7c58b8d8270b20589e42b272ebc617f95d5bbbf9f441f3",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-02-17T18:53:14Z",
    "title_canon_sha256": "fa721894ba1fe1341fc78c3b87d026e76406a429c4082c72ebd3a15c13256568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05473",
    "kind": "arxiv",
    "version": 2
  }
}