Pith Number

pith:4252C7DU

pith:2019:4252C7DU7UQ6B6EEWWB65H2TKT

not attested not anchored not stored refs pending

The 3-way flower intersection problem for Steiner triple systems

H. Amjadi, N. Soltankhah

arxiv:1908.06679 v2 · 2019-08-19 · 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{4252C7DU7UQ6B6EEWWB65H2TKT}

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	2026-07-05T06:23:27.788077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6bba17c74fd21e0f884b583ee9f5354e1e9b9d3f52e64f08d7c6a98853ed55b

Aliases

arxiv: 1908.06679 · arxiv_version: 1908.06679v2 · doi: 10.48550/arxiv.1908.06679 · pith_short_12: 4252C7DU7UQ6 · pith_short_16: 4252C7DU7UQ6B6EE · pith_short_8: 4252C7DU

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/4252C7DU7UQ6B6EEWWB65H2TKT \
  | 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: e6bba17c74fd21e0f884b583ee9f5354e1e9b9d3f52e64f08d7c6a98853ed55b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1882219d78d6961cbdc1187e41d643392eddf97db43fd09b0a3c1f3693f99fdc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-19T10:09:56Z",
    "title_canon_sha256": "27e9b202fbbd7c5ec0a989bb94c2c7dd7fa216324a01ad54f7908ae733068e25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06679",
    "kind": "arxiv",
    "version": 2
  }
}