Pith Number

pith:NNPXL3KD

pith:2012:NNPXL3KDR2XLDV6VHO3E57IVSL

not attested not anchored not stored refs pending

Doing More for Less -- Cache-Aware Parallel Contraction Hierarchies Preprocessing

Dennis Luxen, Dennis Schieferdecker

arxiv:1208.2543 v1 · 2012-08-13 · cs.DS · cs.PF

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNPXL3KDR2XLDV6VHO3E57IVSL}

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	2026-05-18T03:48:57.581765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b5f75ed438eaeb1d7d53bb64efd1592e6b444ba37775dfea261a2e4501def97

Aliases

arxiv: 1208.2543 · arxiv_version: 1208.2543v1 · doi: 10.48550/arxiv.1208.2543 · pith_short_12: NNPXL3KDR2XL · pith_short_16: NNPXL3KDR2XLDV6V · pith_short_8: NNPXL3KD

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/NNPXL3KDR2XLDV6VHO3E57IVSL \
  | 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: 6b5f75ed438eaeb1d7d53bb64efd1592e6b444ba37775dfea261a2e4501def97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8149b86faae0dd231216aa526c30f08386f154b8d76f8da3c4fd00a86eb3661",
    "cross_cats_sorted": [
      "cs.PF"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-08-13T10:48:39Z",
    "title_canon_sha256": "4ce537f05cdf4f294f74c9d82fd006d562aca3f9791f7abd8778144169929eaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2543",
    "kind": "arxiv",
    "version": 1
  }
}