Pith Number

pith:U5AORQMD

pith:2018:U5AORQMDVX5E3GEDZGZYMAQQ3Z

not attested not anchored not stored refs pending

Sparse highly connected spanning subgraphs in dense directed graphs

Dong Yeap Kang

arxiv:1801.01795 v2 · 2018-01-05 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5AORQMDVX5E3GEDZGZYMAQQ3Z}

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	2026-05-17T23:49:44.158146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a740e8c183adfa4d9883c9b3860210de74aff1e95184b45e1c45a79a56a848b9

Aliases

arxiv: 1801.01795 · arxiv_version: 1801.01795v2 · doi: 10.48550/arxiv.1801.01795 · pith_short_12: U5AORQMDVX5E · pith_short_16: U5AORQMDVX5E3GED · pith_short_8: U5AORQMD

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/U5AORQMDVX5E3GEDZGZYMAQQ3Z \
  | 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: a740e8c183adfa4d9883c9b3860210de74aff1e95184b45e1c45a79a56a848b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "467ed3bbc48fb762343a031bb1c5d6e4085aaa6c0fb2719d9d74d97c5e1bfe85",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-01-05T15:39:59Z",
    "title_canon_sha256": "fd9b51a787a7cea1d0c3c69b1bb265128cc6d3e2f5153de96bbdf26e3a4db1fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01795",
    "kind": "arxiv",
    "version": 2
  }
}