Pith Number

pith:CW7AXTHA

pith:1994:CW7AXTHAGAZCCH4XZCQDBYSFOX

not attested not anchored not stored refs pending

Efficient pooling designs for library screening

Craig C. Whittaker, David C. Torney, David J. Balding, D. C. Bruce, Emanuel Knill, N. A. Doggett, R. L. Stallings, William J. Bruno, W. W. Sawhill

arxiv:math/9412222 v1 · 1994-12-04 · math.CO · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CW7AXTHAGAZCCH4XZCQDBYSFOX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:05:50.734474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15be0bcce03032211f97c8a030e24575cf825d9f72039a2405a61ed385641dfc

Aliases

arxiv: math/9412222 · arxiv_version: math/9412222v1 · doi: 10.48550/arxiv.math/9412222 · pith_short_12: CW7AXTHAGAZC · pith_short_16: CW7AXTHAGAZCCH4X · pith_short_8: CW7AXTHA

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/CW7AXTHAGAZCCH4XZCQDBYSFOX \
  | 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: 15be0bcce03032211f97c8a030e24575cf825d9f72039a2405a61ed385641dfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91c7c5ebff3e1de8c027ed56213084afd134256c61a0d2f6c1e491bf7bdcf15f",
    "cross_cats_sorted": [
      "q-bio"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "1994-12-04T00:00:00Z",
    "title_canon_sha256": "f35c750806d8729598cb276853be589683d83ec72cba388105406451cd910d8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9412222",
    "kind": "arxiv",
    "version": 1
  }
}