Pith Number

pith:IQEEVYYH

pith:2009:IQEEVYYHZHZWLXJ25IJOIZOSOC

not attested not anchored not stored refs pending

On some universal sums of generalized polygonal numbers

Fan Ge, Zhi-Wei Sun

arxiv:0906.2450 v3 · 2009-06-15 · math.NT · 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{IQEEVYYHZHZWLXJ25IJOIZOSOC}

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	2026-05-18T01:12:00.646171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44084ae307c9f365dd3aea12e465d2708bcf61076d7880799023be9d77cf6d9e

Aliases

arxiv: 0906.2450 · arxiv_version: 0906.2450v3 · doi: 10.48550/arxiv.0906.2450 · pith_short_12: IQEEVYYHZHZW · pith_short_16: IQEEVYYHZHZWLXJ2 · pith_short_8: IQEEVYYH

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/IQEEVYYHZHZWLXJ25IJOIZOSOC \
  | 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: 44084ae307c9f365dd3aea12e465d2708bcf61076d7880799023be9d77cf6d9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e30d8f81fe3c106bce5af4fa8e11d114a283ea552aae8cf6f49731892ecb72f4",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2009-06-15T03:47:06Z",
    "title_canon_sha256": "bd085cf6f42d03d6ae9736341262c270d0bdb34020ee6fa9ed1737ede1356d8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2450",
    "kind": "arxiv",
    "version": 3
  }
}