Pith Number

pith:GH66HXOY

pith:2016:GH66HXOYROQTY5CI2DTSYNJJ7D

not attested not anchored not stored refs pending

Induced Forests in Bipartite Planar Graphs

Qiqin Xie, Xingxing Yu, Yan Wang

arxiv:1605.00047 v1 · 2016-04-30 · 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{GH66HXOYROQTY5CI2DTSYNJJ7D}

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	2026-05-18T01:15:56.990777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31fde3ddd88ba13c7448d0e72c3529f8f1ea9bc8a83e98755053f92cea042a5b

Aliases

arxiv: 1605.00047 · arxiv_version: 1605.00047v1 · doi: 10.48550/arxiv.1605.00047 · pith_short_12: GH66HXOYROQT · pith_short_16: GH66HXOYROQTY5CI · pith_short_8: GH66HXOY

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/GH66HXOYROQTY5CI2DTSYNJJ7D \
  | 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: 31fde3ddd88ba13c7448d0e72c3529f8f1ea9bc8a83e98755053f92cea042a5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6867a7f6bd5bed4c907b3988f2932a1c183cc544c5f877269866039503ab7876",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-04-30T00:53:04Z",
    "title_canon_sha256": "70ebf766fdc6453928c46825db1a34d6f378ef7135154be1180bcb79a0c05493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.00047",
    "kind": "arxiv",
    "version": 1
  }
}