Pith Number

pith:UQGJSG7K

pith:2007:UQGJSG7KVJ6QGYSQPBQB7YJGLL

not attested not anchored not stored refs pending

$D$-ary Bounded-Length Huffman Coding

Michael B. Baer

arxiv:cs/0701012 v2 · 2007-01-03 · cs.IT · cs.DS · 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{UQGJSG7KVJ6QGYSQPBQB7YJGLL}

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	2026-07-04T15:02:54.816737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a40c991beaaa7d03625078601fe1265adc09c76709694adbc1f70bb553d14246

Aliases

arxiv: cs/0701012 · arxiv_version: cs/0701012v2 · doi: 10.48550/arxiv.cs/0701012 · pith_short_12: UQGJSG7KVJ6Q · pith_short_16: UQGJSG7KVJ6QGYSQ · pith_short_8: UQGJSG7K

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/UQGJSG7KVJ6QGYSQPBQB7YJGLL \
  | 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: a40c991beaaa7d03625078601fe1265adc09c76709694adbc1f70bb553d14246

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "206e9332a7b1e86358bc46d74cd657dc1ce46bd0aca390065ec32b85f3312f3a",
    "cross_cats_sorted": [
      "cs.DS",
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-01-03T03:42:09Z",
    "title_canon_sha256": "4613969d4ac6f853d09bfc0ab37f142c14eb7b2f227a6a22e402ff419ccbbb41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0701012",
    "kind": "arxiv",
    "version": 2
  }
}