Pith Number

pith:LW2RQSEI

pith:2011:LW2RQSEIHWBKLDKA2ARP76FJLR

not attested not anchored not stored refs pending

On a problem of Sierpinski

Jin-Hui Fang, Yong-Gao Chen

arxiv:1110.4714 v2 · 2011-10-21 · 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{LW2RQSEIHWBKLDKA2ARP76FJLR}

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	2026-05-18T02:42:54.358574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5db51848883d82a58d40d022fff8a95c6d0d0d9e848eb27bfb2a82b041006642

Aliases

arxiv: 1110.4714 · arxiv_version: 1110.4714v2 · doi: 10.48550/arxiv.1110.4714 · pith_short_12: LW2RQSEIHWBK · pith_short_16: LW2RQSEIHWBKLDKA · pith_short_8: LW2RQSEI

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/LW2RQSEIHWBKLDKA2ARP76FJLR \
  | 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: 5db51848883d82a58d40d022fff8a95c6d0d0d9e848eb27bfb2a82b041006642

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20a063f37e7fbb6f2471ced6f2e1eb46cef014114cb8b09131fb4ba1a60ab5a1",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2011-10-21T07:31:51Z",
    "title_canon_sha256": "e80a0d2727c0b039a7689faa419ac35c4b439d5ea17dc6fca7148e12839eff6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4714",
    "kind": "arxiv",
    "version": 2
  }
}