Pith Number

pith:AMFGAWAS

pith:2018:AMFGAWAS34SUIRKGL2L3BUYBHK

not attested not anchored not stored refs pending

Estimating the Number of Sources: An Efficient Maximization Approach

Ahmed Badawy, Amr Mohamed, Tamer Khattab, Tara Salman, Tarek M. Elfouly

arxiv:1810.09850 v1 · 2018-10-20 · cs.IT · eess.SP · 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{AMFGAWAS34SUIRKGL2L3BUYBHK}

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	2026-05-18T00:02:29.161021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

030a605812df254445465e97b0d3013ab147f5db4dbf110ed82b768b433b6b57

Aliases

arxiv: 1810.09850 · arxiv_version: 1810.09850v1 · doi: 10.48550/arxiv.1810.09850 · pith_short_12: AMFGAWAS34SU · pith_short_16: AMFGAWAS34SUIRKG · pith_short_8: AMFGAWAS

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/AMFGAWAS34SUIRKGL2L3BUYBHK \
  | 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: 030a605812df254445465e97b0d3013ab147f5db4dbf110ed82b768b433b6b57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1f7dabd5649fd117dcea3783bac75e9d8da74a78b94e6630467c8adc838a30",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-10-20T18:15:18Z",
    "title_canon_sha256": "b06ab823cf18deb06b0ede8798a6368ef28feb029710c16b19b452d1277562e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09850",
    "kind": "arxiv",
    "version": 1
  }
}