Pith Number

pith:GLTZJT4N

pith:2019:GLTZJT4N32MMTRLXXPIYPVKWM5

not attested not anchored not stored refs pending

Non-uniform covering array with symmetric forbidden edge constraints

Brett Stevens

arxiv:1901.02479 v1 · 2019-01-08 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GLTZJT4N32MMTRLXXPIYPVKWM5}

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	2026-05-17T23:56:40.431358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32e794cf8dde98c9c577bbd187d5566746a68a3e236523397b79efef79dbcb0e

Aliases

arxiv: 1901.02479 · arxiv_version: 1901.02479v1 · doi: 10.48550/arxiv.1901.02479 · pith_short_12: GLTZJT4N32MM · pith_short_16: GLTZJT4N32MMTRLX · pith_short_8: GLTZJT4N

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/GLTZJT4N32MMTRLXXPIYPVKWM5 \
  | 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: 32e794cf8dde98c9c577bbd187d5566746a68a3e236523397b79efef79dbcb0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cd0f3274b038e024f8566b0dc096c778d426cba1e634a8e5fafdc9426617478",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-01-08T19:34:48Z",
    "title_canon_sha256": "619d397c28ef7eb843346027921b2bc6fd9d79477feb04a7e8a4fc57057a39d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02479",
    "kind": "arxiv",
    "version": 1
  }
}