Pith Number

pith:YC2CVCB6

pith:2010:YC2CVCB6OPBA6XGXWLSCJRXS6N

not attested not anchored not stored refs pending

Improved Constructions for Non-adaptive Threshold Group Testing

Mahdi Cheraghchi

arxiv:1002.2244 v3 · 2010-02-10 · cs.DM · cs.IT · 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{YC2CVCB6OPBA6XGXWLSCJRXS6N}

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	2026-05-18T03:36:06.718217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0b42a883e73c20f5cd7b2e424c6f2f35f3f528ec313a59d8014f4405a1b6a6d

Aliases

arxiv: 1002.2244 · arxiv_version: 1002.2244v3 · doi: 10.48550/arxiv.1002.2244 · pith_short_12: YC2CVCB6OPBA · pith_short_16: YC2CVCB6OPBA6XGX · pith_short_8: YC2CVCB6

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/YC2CVCB6OPBA6XGXWLSCJRXS6N \
  | 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: c0b42a883e73c20f5cd7b2e424c6f2f35f3f528ec313a59d8014f4405a1b6a6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bc787ac4aa4370d4fdb4f340e81ad5248876ce07fd6c749f841f64e91685645",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2010-02-10T23:42:28Z",
    "title_canon_sha256": "6e5dbb0c6c692c437a2190ba38dc97022529341941ef54c6d30886513391874f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.2244",
    "kind": "arxiv",
    "version": 3
  }
}