Pith Number

pith:67FNZ5IJ

pith:2017:67FNZ5IJZPV26DFTTX6YKCRG2G

not attested not anchored not stored refs pending

Solution to Bishnoi's conjecture on minimal t-fold blocking sets of maximal size

Jeroen Schillewaert

arxiv:1705.03775 v1 · 2017-05-09 · 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{67FNZ5IJZPV26DFTTX6YKCRG2G}

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	2026-05-18T00:44:43.053145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7cadcf509cbebaf0cb39dfd850a26d1b010daf7f95ba620de9f5c702973a1a4

Aliases

arxiv: 1705.03775 · arxiv_version: 1705.03775v1 · doi: 10.48550/arxiv.1705.03775 · pith_short_12: 67FNZ5IJZPV2 · pith_short_16: 67FNZ5IJZPV26DFT · pith_short_8: 67FNZ5IJ

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/67FNZ5IJZPV26DFTTX6YKCRG2G \
  | 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: f7cadcf509cbebaf0cb39dfd850a26d1b010daf7f95ba620de9f5c702973a1a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99e0432bb541b63d78dda8c6bfdc6ecc0600a1e5e281d87f6727e85546d3f903",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-05-09T02:58:44Z",
    "title_canon_sha256": "27ed382d1195b9bd242ffe51606e8fbf5d0b6fe633f49801a7cbd0403926e6a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.03775",
    "kind": "arxiv",
    "version": 1
  }
}