Pith Number

pith:LJ7HNTVG

pith:2013:LJ7HNTVGVZPVCZNOWW7LCOLIJP

not attested not anchored not stored refs pending

The many faces of the Kempner number

Boris Adamczewski (ICJ)

arxiv:1303.1685 v1 · 2013-03-07 · 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{LJ7HNTVGVZPVCZNOWW7LCOLIJP}

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	2026-05-18T03:12:57.700836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a7e76cea6ae5f5165aeb5beb139684be7e690aa1794bf9ee1ea6b87c3c2d0cd

Aliases

arxiv: 1303.1685 · arxiv_version: 1303.1685v1 · doi: 10.48550/arxiv.1303.1685 · pith_short_12: LJ7HNTVGVZPV · pith_short_16: LJ7HNTVGVZPVCZNO · pith_short_8: LJ7HNTVG

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/LJ7HNTVGVZPVCZNOWW7LCOLIJP \
  | 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: 5a7e76cea6ae5f5165aeb5beb139684be7e690aa1794bf9ee1ea6b87c3c2d0cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7f2c4764953744b0dedd9177f48b02b09da13c39cdd2b217b474fe91d094c07",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-03-07T13:31:45Z",
    "title_canon_sha256": "f63ac3a5226e74bbf1e9d46808fb37e6e796dd9cad5a7553b859f10745b16eb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1685",
    "kind": "arxiv",
    "version": 1
  }
}