Pith Number

pith:SJCG33PD

pith:2013:SJCG33PDY4FEZG2A44TZJM5JD6

not attested not anchored not stored refs pending

A construction of almost Steiner systems

Asaf Ferber, Benny Sudakov, Michael Krivelevich, Rani Hod

arxiv:1303.4065 v1 · 2013-03-17 · 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{SJCG33PDY4FEZG2A44TZJM5JD6}

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	2026-05-18T03:30:39.950099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92446dede3c70a4c9b40e72794b3a91fbf99c1225dd6f8a63bd0f48660896ab9

Aliases

arxiv: 1303.4065 · arxiv_version: 1303.4065v1 · doi: 10.48550/arxiv.1303.4065 · pith_short_12: SJCG33PDY4FE · pith_short_16: SJCG33PDY4FEZG2A · pith_short_8: SJCG33PD

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/SJCG33PDY4FEZG2A44TZJM5JD6 \
  | 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: 92446dede3c70a4c9b40e72794b3a91fbf99c1225dd6f8a63bd0f48660896ab9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92bc51297d6cd3481941379a8ed57bc22014786d7e5e68ea2e7c44ebb8214759",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-17T14:52:41Z",
    "title_canon_sha256": "f698403c53fc56f4b8604f3bee18f42e2425b9fd1099e931a8c3617ea9776f5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4065",
    "kind": "arxiv",
    "version": 1
  }
}