Pith Number

pith:3QIOY4Y7

pith:2006:3QIOY4Y7MVS7NTL5M7WOPEKXVY

not attested not anchored not stored refs pending

Alphabetic Coding with Exponential Costs

Michael B. Baer

arxiv:cs/0605099 v3 · 2006-05-23 · 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{3QIOY4Y7MVS7NTL5M7WOPEKXVY}

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	2026-07-04T15:40:14.124724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc10ec731f6565f6cd7d67ece79157ae15ca162b678f56febd8261e768e034b6

Aliases

arxiv: cs/0605099 · arxiv_version: cs/0605099v3 · doi: 10.48550/arxiv.cs/0605099 · pith_short_12: 3QIOY4Y7MVS7 · pith_short_16: 3QIOY4Y7MVS7NTL5 · pith_short_8: 3QIOY4Y7

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/3QIOY4Y7MVS7NTL5M7WOPEKXVY \
  | 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: dc10ec731f6565f6cd7d67ece79157ae15ca162b678f56febd8261e768e034b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63c8b6cf4b74ad4c933cb7234cb4e3565b0e9f3ab37240f67d52db9d80acaf10",
    "cross_cats_sorted": [
      "cs.DS",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2006-05-23T19:55:47Z",
    "title_canon_sha256": "b8df28804d3efea5b08af8423c8b88f98f96988d1d0f3a21bf28a34e561b8b02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0605099",
    "kind": "arxiv",
    "version": 3
  }
}