Pith Number

pith:ZCYIW4IZ

pith:2017:ZCYIW4IZ27MW4TS64EUDBXWNAG

not attested not anchored not stored refs pending

On estimating the alphabet size of a discrete random source

Philip Ginzboorg

arxiv:1711.07545 v1 · 2017-11-20 · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZCYIW4IZ27MW4TS64EUDBXWNAG}

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	2026-05-18T00:29:58.737952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8b08b7119d7d96e4e5ee12830decd0196fc52a55f1f305a294890add9881d11

Aliases

arxiv: 1711.07545 · arxiv_version: 1711.07545v1 · doi: 10.48550/arxiv.1711.07545 · pith_short_12: ZCYIW4IZ27MW · pith_short_16: ZCYIW4IZ27MW4TS6 · pith_short_8: ZCYIW4IZ

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/ZCYIW4IZ27MW4TS64EUDBXWNAG \
  | 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: c8b08b7119d7d96e4e5ee12830decd0196fc52a55f1f305a294890add9881d11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82e934be21660a14ec4e2e055a2d579258a87767a267f2a2bb6711fa94d2a84a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-11-20T21:10:15Z",
    "title_canon_sha256": "2707150a7ddd4781400a66778a33ce625de8a1df8a885c7dcb356c1dcbd7db66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07545",
    "kind": "arxiv",
    "version": 1
  }
}