Pith Number

pith:U2LMSWDN

pith:2017:U2LMSWDNGLOPHPXPUFWPF2AOOR

not attested not anchored not stored refs pending

New cardinality estimation algorithms for HyperLogLog sketches

Otmar Ertl

arxiv:1702.01284 v2 · 2017-02-04 · 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{U2LMSWDNGLOPHPXPUFWPF2AOOR}

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	2026-05-18T00:50:03.808697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a696c9586d32dcf3beefa16cf2e80e74490c4665184cbd8e5de327a25b062d63

Aliases

arxiv: 1702.01284 · arxiv_version: 1702.01284v2 · doi: 10.48550/arxiv.1702.01284 · pith_short_12: U2LMSWDNGLOP · pith_short_16: U2LMSWDNGLOPHPXP · pith_short_8: U2LMSWDN

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/U2LMSWDNGLOPHPXPUFWPF2AOOR \
  | 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: a696c9586d32dcf3beefa16cf2e80e74490c4665184cbd8e5de327a25b062d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cb0c9ebb540b81ff48432b1789efe300f4afe9fbe1f56e1da5bb4c3e1bfe480",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-02-04T13:25:05Z",
    "title_canon_sha256": "1ccfb2134a48bf2188c523eb4e867870de1a452059f4b4a5270780247edd5c9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01284",
    "kind": "arxiv",
    "version": 2
  }
}