Pith Number

pith:BXL326UA

pith:2008:BXL326UAHOOPCVWOQHPGYGLNST

not attested not anchored not stored refs pending

Variations on a theme by Schalkwijk and Kailath

Baris Nakiboglu, Robert G. Gallager

arxiv:0812.2709 v4 · 2008-12-15 · 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{BXL326UAHOOPCVWOQHPGYGLNST}

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	2026-05-18T00:20:49.667840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0dd7bd7a803b9cf156ce81de6c196d94caddd7ba38755f98a847e75f96cd2841

Aliases

arxiv: 0812.2709 · arxiv_version: 0812.2709v4 · doi: 10.48550/arxiv.0812.2709 · pith_short_12: BXL326UAHOOP · pith_short_16: BXL326UAHOOPCVWO · pith_short_8: BXL326UA

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/BXL326UAHOOPCVWOQHPGYGLNST \
  | 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: 0dd7bd7a803b9cf156ce81de6c196d94caddd7ba38755f98a847e75f96cd2841

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da8ba2c2c0a6851bcc3bace83675b1336d1f4fa7723cd17fb0ed9e572315529b",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-12-15T02:04:50Z",
    "title_canon_sha256": "09087ac25283eea0e8e66bf17d8a93cc5f6091dd5ce847e33754e3a779025bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2709",
    "kind": "arxiv",
    "version": 4
  }
}