Pith Number

pith:NQQTGC34

pith:2012:NQQTGC3475KVPCMTIR7G4H2ZOC

not attested not anchored not stored refs pending

Lattices and maximum flow algorithms in planar graphs

Britta Peis, Jannik Matuschke

arxiv:1211.2189 v1 · 2012-11-09 · 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{NQQTGC3475KVPCMTIR7G4H2ZOC}

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	2026-05-18T03:41:11.483987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c21330b7cff55578993447e6e1f597090529bd5f74dae99856fc84c876784c6

Aliases

arxiv: 1211.2189 · arxiv_version: 1211.2189v1 · doi: 10.48550/arxiv.1211.2189 · pith_short_12: NQQTGC3475KV · pith_short_16: NQQTGC3475KVPCMT · pith_short_8: NQQTGC34

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/NQQTGC3475KVPCMTIR7G4H2ZOC \
  | 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: 6c21330b7cff55578993447e6e1f597090529bd5f74dae99856fc84c876784c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b7ea199a6f78df1c2a02cb752bed6cfeba96ecba124f90a3b054d55c3214f2a",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-11-09T17:02:11Z",
    "title_canon_sha256": "329f93202333077361fda5d9d1d6930fc231ce2aad0bf6049c41110bed9cc289"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2189",
    "kind": "arxiv",
    "version": 1
  }
}