Pith Number

pith:7PDRGXG3

pith:2018:7PDRGXG3NPMN3B5IZZGU7536HR

not attested not anchored not stored refs pending

Determination of the size of defining set for Steiner triple systems

M. Mortezaeefar, Nazli Besharati

arxiv:1807.08277 v1 · 2018-07-22 · 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{7PDRGXG3NPMN3B5IZZGU7536HR}

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	2026-05-18T00:10:08.614336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbc7135cdb6bd8dd87a8ce4d4ff77e3c77a1cf1005ee1c3c9d6b799ce44ce062

Aliases

arxiv: 1807.08277 · arxiv_version: 1807.08277v1 · doi: 10.48550/arxiv.1807.08277 · pith_short_12: 7PDRGXG3NPMN · pith_short_16: 7PDRGXG3NPMN3B5I · pith_short_8: 7PDRGXG3

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/7PDRGXG3NPMN3B5IZZGU7536HR \
  | 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: fbc7135cdb6bd8dd87a8ce4d4ff77e3c77a1cf1005ee1c3c9d6b799ce44ce062

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc52cb1ed83c674f678f097bc9937e37c8d3d1419fa5af41fc4dbaacc2d6e068",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-22T12:22:29Z",
    "title_canon_sha256": "7f1c0d6372cb0a75be80b5752cd00cbd3f63ab6a19864adec45a151b2c2634db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08277",
    "kind": "arxiv",
    "version": 1
  }
}