Pith Number

pith:YRHREWTN

pith:2019:YRHREWTNP7N4NTSZQLKEBQ4ZDF

not attested not anchored not stored refs pending

An Efficient Algorithm to Test Potentially Bipartiteness of Graphical Degree Sequences

Kai Wang

arxiv:1908.06821 v1 · 2019-08-19 · math.CO · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YRHREWTNP7N4NTSZQLKEBQ4ZDF}

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	2026-07-04T23:58:19.654392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c44f125a6d7fdbc6ce5982d440c399196250a45a74334e8e4e4c29e42b900f9d

Aliases

arxiv: 1908.06821 · arxiv_version: 1908.06821v1 · doi: 10.48550/arxiv.1908.06821 · pith_short_12: YRHREWTNP7N4 · pith_short_16: YRHREWTNP7N4NTSZ · pith_short_8: YRHREWTN

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/YRHREWTNP7N4NTSZQLKEBQ4ZDF \
  | 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: c44f125a6d7fdbc6ce5982d440c399196250a45a74334e8e4e4c29e42b900f9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a26ca90d17fbcb3f8143c7c88a08ba3af33edbe54fd7d130c5f49473a09498d",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-19T14:13:31Z",
    "title_canon_sha256": "45820d81870fb6506619b0cb8e249d565d69d029d69050c67f8a950754a0502e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06821",
    "kind": "arxiv",
    "version": 1
  }
}