Pith Number

pith:YOVI5OVQ

pith:2017:YOVI5OVQVZZTDGXDUJFYY264X5

not attested not anchored not stored refs pending

Frame difference families and resolvable balanced incomplete block designs

Simone Costa, Tao Feng, Xiaomiao Wang

arxiv:1709.08947 v2 · 2017-09-26 · 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{YOVI5OVQVZZTDGXDUJFYY264X5}

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	2026-05-18T00:24:30.643070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3aa8ebab0ae73319ae3a24b8c6bdcbf47544bdc1381f3f14c894bf0b7287204

Aliases

arxiv: 1709.08947 · arxiv_version: 1709.08947v2 · doi: 10.48550/arxiv.1709.08947 · pith_short_12: YOVI5OVQVZZT · pith_short_16: YOVI5OVQVZZTDGXD · pith_short_8: YOVI5OVQ

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/YOVI5OVQVZZTDGXDUJFYY264X5 \
  | 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: c3aa8ebab0ae73319ae3a24b8c6bdcbf47544bdc1381f3f14c894bf0b7287204

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a00810eea803f2c7916171cea712b4e2e5c4371a802dccf8a1ee2f366c50c9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-09-26T11:32:01Z",
    "title_canon_sha256": "f189dd9ba5f5c969d5e805d465738c88698c948657ec075a1d53f851ece7548a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08947",
    "kind": "arxiv",
    "version": 2
  }
}