Pith Number

pith:WWI5IARQ

pith:2017:WWI5IARQSDCZIWUQ43KXCHPPSV

not attested not anchored not stored refs pending

Nearly Optimal Sparse Group Testing

Elena Grigorescu, Samson Zhou, Sidharth Jaggi, Venkata Gandikota

arxiv:1708.03429 v2 · 2017-08-11 · cs.IT · cs.DS · 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{WWI5IARQSDCZIWUQ43KXCHPPSV}

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	2026-05-18T00:05:19.711271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b591d4023090c5945a90e6d5711def9542b1aacf008ec7d1d1c971aef6d128c6

Aliases

arxiv: 1708.03429 · arxiv_version: 1708.03429v2 · doi: 10.48550/arxiv.1708.03429 · pith_short_12: WWI5IARQSDCZ · pith_short_16: WWI5IARQSDCZIWUQ · pith_short_8: WWI5IARQ

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/WWI5IARQSDCZIWUQ43KXCHPPSV \
  | 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: b591d4023090c5945a90e6d5711def9542b1aacf008ec7d1d1c971aef6d128c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c42e09eff495dd8af1ecd17f32c48c929e5e982b2deb7a46f9e6c90f022cccb1",
    "cross_cats_sorted": [
      "cs.DS",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-08-11T04:47:09Z",
    "title_canon_sha256": "b18c8451051e5f66546baf590ce2e311744056ec5919ec02c5dae4966590836b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.03429",
    "kind": "arxiv",
    "version": 2
  }
}