Pith Number

pith:DD447ULL

pith:2022:DD447ULLTEKL2KUMFMAQSLFA5B

not attested not anchored not stored refs pending

Steiner Type Packing Problems in Digraphs: A Survey

Yuefang Sun

arxiv:2206.12092 v6 · 2022-06-24 · 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{DD447ULLTEKL2KUMFMAQSLFA5B}

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	2026-05-20T00:04:03.096188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18f9cfd16b9914bd2a8c2b01092ca0e850fe30f333aaefb21bfab4df0eebe7e7

Aliases

arxiv: 2206.12092 · arxiv_version: 2206.12092v6 · doi: 10.48550/arxiv.2206.12092 · pith_short_12: DD447ULLTEKL · pith_short_16: DD447ULLTEKL2KUM · pith_short_8: DD447ULL

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/DD447ULLTEKL2KUMFMAQSLFA5B \
  | 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: 18f9cfd16b9914bd2a8c2b01092ca0e850fe30f333aaefb21bfab4df0eebe7e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2f8655b9607fe18c34f911b14d5cd7f83c46c97e5ce2b47c669ef6934bdcc8f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-06-24T06:05:32Z",
    "title_canon_sha256": "a06048779bf8ea10f9711e10b27e57093a6fd929b5a123a050aad56a45fa1de4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.12092",
    "kind": "arxiv",
    "version": 6
  }
}