Pith Number

pith:PLZWV23Q

pith:2015:PLZWV23QSEFSIEU6UGW764O72S

not attested not anchored not stored refs pending

Connectivity Preserving Iterative Compaction and Finding 2 Disjoint Rooted Paths in Linear Time

Bruce Reed, Ken-ichi Kawarabayashi, Zhentao Li

arxiv:1509.07680 v1 · 2015-09-25 · cs.DS · cs.DM · 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{PLZWV23QSEFSIEU6UGW764O72S}

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	2026-05-18T01:32:02.194719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7af36aeb70910b24129ea1adff71dfd48ba171ee0d04be9dd82499eb368a2934

Aliases

arxiv: 1509.07680 · arxiv_version: 1509.07680v1 · doi: 10.48550/arxiv.1509.07680 · pith_short_12: PLZWV23QSEFS · pith_short_16: PLZWV23QSEFSIEU6 · pith_short_8: PLZWV23Q

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/PLZWV23QSEFSIEU6UGW764O72S \
  | 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: 7af36aeb70910b24129ea1adff71dfd48ba171ee0d04be9dd82499eb368a2934

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cd03ce3100b6f4154040093711cb3db306394fbb9ab56ac94613e76430f48fc",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-09-25T11:13:38Z",
    "title_canon_sha256": "3a68269e9c8faeac9c36d283fffb7bc3e22c2fa721de27f6938fac824a06bf9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07680",
    "kind": "arxiv",
    "version": 1
  }
}