Pith Number

pith:SLC5U7B6

pith:2018:SLC5U7B64SUIWCV5AB5O2JIIGQ

not attested not anchored not stored refs pending

Unconstraining graph-constrained group testing

Bruce Spang, Mary Wootters

arxiv:1809.03589 v1 · 2018-09-10 · 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{SLC5U7B64SUIWCV5AB5O2JIIGQ}

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	2026-05-18T00:06:00.375774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92c5da7c3ee4a88b0abd007aed25083410f92525bb245f5a7581fef06b74b9aa

Aliases

arxiv: 1809.03589 · arxiv_version: 1809.03589v1 · doi: 10.48550/arxiv.1809.03589 · pith_short_12: SLC5U7B64SUI · pith_short_16: SLC5U7B64SUIWCV5 · pith_short_8: SLC5U7B6

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/SLC5U7B64SUIWCV5AB5O2JIIGQ \
  | 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: 92c5da7c3ee4a88b0abd007aed25083410f92525bb245f5a7581fef06b74b9aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35d0c29c514fa21b5cef12739a5fd048fd01febeccee82c08ff471f6068fbd39",
    "cross_cats_sorted": [
      "cs.DM",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-10T20:47:54Z",
    "title_canon_sha256": "bb7d89f8faf45b697ad2f2caca1ccb6c0d9cacf89ce05c60ac3205cbfe491b02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03589",
    "kind": "arxiv",
    "version": 1
  }
}