Pith Number

pith:2Y5RRX54

pith:2010:2Y5RRX54TDZHL7OBSBIXVMIPK7

not attested not anchored not stored refs pending

Contractions, Removals and How to Certify 3-Connectivity in Linear Time

Jens M. Schmidt

arxiv:1011.6187 v1 · 2010-11-29 · cs.DS · 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{2Y5RRX54TDZHL7OBSBIXVMIPK7}

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	2026-05-18T04:34:36.260311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d63b18dfbc98f275fdc190517ab10f57c8ad59296f91e0d7f2bcf6b2e608740d

Aliases

arxiv: 1011.6187 · arxiv_version: 1011.6187v1 · doi: 10.48550/arxiv.1011.6187 · pith_short_12: 2Y5RRX54TDZH · pith_short_16: 2Y5RRX54TDZHL7OB · pith_short_8: 2Y5RRX54

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/2Y5RRX54TDZHL7OBSBIXVMIPK7 \
  | 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: d63b18dfbc98f275fdc190517ab10f57c8ad59296f91e0d7f2bcf6b2e608740d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1be5a44d57822c51785716bc3ab6c2a418c230e4ac2ef8d9bc7a14b4ff6989a",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-11-29T10:46:27Z",
    "title_canon_sha256": "6f6bd6d5e6cb85ca39040d1c40bce64dc58cba5d0f5d0b55d8cbbe53be5b4f9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.6187",
    "kind": "arxiv",
    "version": 1
  }
}