Pith Number

pith:K5OB6EP2

pith:2020:K5OB6EP2MXQUCDWR4N2LADUZY2

not attested not anchored not stored refs pending

Improved non-adaptive algorithms for threshold group testing with a gap

Isao Echizen, Mahdi Cheraghchi, Thach V. Bui

arxiv:2001.01008 v3 · 2020-01-03 · cs.IT · cs.DM · 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{K5OB6EP2MXQUCDWR4N2LADUZY2}

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	2026-07-05T03:07:42.444677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

575c1f11fa65e1410ed1e374b00e99c680c8e681a3084794f1d7b24aa6cf8897

Aliases

arxiv: 2001.01008 · arxiv_version: 2001.01008v3 · doi: 10.48550/arxiv.2001.01008 · pith_short_12: K5OB6EP2MXQU · pith_short_16: K5OB6EP2MXQUCDWR · pith_short_8: K5OB6EP2

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/K5OB6EP2MXQUCDWR4N2LADUZY2 \
  | 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: 575c1f11fa65e1410ed1e374b00e99c680c8e681a3084794f1d7b24aa6cf8897

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fefea2cbac7307afe6cb1375f900b413e8bcb9a757b910e047a339da1a1bad29",
    "cross_cats_sorted": [
      "cs.DM",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-01-03T23:28:57Z",
    "title_canon_sha256": "9f547e65af08c4520ae35ef7f90352ccf278cf47c0c3c96c017ebf23f0ee7ec2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.01008",
    "kind": "arxiv",
    "version": 3
  }
}