Pith Number

pith:C7DI6O5H

pith:2018:C7DI6O5HNWUB65OJCP3NKJYUVA

not attested not anchored not stored refs pending

When are Multiples of Polygonal Numbers again Polygonal Numbers?

Jasbir S. Chahal, Michael Griffin, Nathan Priddis

arxiv:1806.07981 v2 · 2018-06-20 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C7DI6O5HNWUB65OJCP3NKJYUVA}

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	2026-05-18T00:03:41.216152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17c68f3ba76da81f75c913f6d52714a82cd866bab435b933652951ebf89be592

Aliases

arxiv: 1806.07981 · arxiv_version: 1806.07981v2 · doi: 10.48550/arxiv.1806.07981 · pith_short_12: C7DI6O5HNWUB · pith_short_16: C7DI6O5HNWUB65OJ · pith_short_8: C7DI6O5H

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/C7DI6O5HNWUB65OJCP3NKJYUVA \
  | 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: 17c68f3ba76da81f75c913f6d52714a82cd866bab435b933652951ebf89be592

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3821dcaa9edcabc7848b0ce89636343cbfe585dcd6ec39cece7d175d8cdf820",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2018-06-20T20:46:11Z",
    "title_canon_sha256": "d4053c83a39d990a5535299ee9e32ff317b6f5807addbe9509b51555f694dd57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07981",
    "kind": "arxiv",
    "version": 2
  }
}