Pith Number

pith:SBYOHYPZ

pith:2022:SBYOHYPZIA24WVC43W2AHWWHJO

not attested not anchored not stored refs pending

Improving Group Testing via Gradient Descent

Christina Fragouli, Pavlos Nikolopoulos, Suhas Diggavi, Sundara Rajan Srinivasavaradhan

arxiv:2201.12325 v1 · 2022-01-28 · cs.IT · math.IT · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SBYOHYPZIA24WVC43W2AHWWHJO}

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	2026-07-05T03:52:22.110997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9070e3e1f94035cb545cddb403dac74b908043b5ccbe51871899397223482e29

Aliases

arxiv: 2201.12325 · arxiv_version: 2201.12325v1 · doi: 10.48550/arxiv.2201.12325 · pith_short_12: SBYOHYPZIA24 · pith_short_16: SBYOHYPZIA24WVC4 · pith_short_8: SBYOHYPZ

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/SBYOHYPZIA24WVC43W2AHWWHJO \
  | 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: 9070e3e1f94035cb545cddb403dac74b908043b5ccbe51871899397223482e29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3124bf12a25dff7c1bdffdc8d040e342b9a810c914a8b43610bd78eb367f748e",
    "cross_cats_sorted": [
      "math.IT",
      "stat.AP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2022-01-28T18:46:24Z",
    "title_canon_sha256": "1a2a870dee3392f87fea4dcc62b6127f1261e31925872a214a1483662cf7d3ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.12325",
    "kind": "arxiv",
    "version": 1
  }
}