Pith Number

pith:RI5HDH3K

pith:2013:RI5HDH3KJQWMUYCWVO6XDUU6QU

not attested not anchored not stored refs pending

Contour polygonal approximation using shortest path in networks

Andr\'e Ricardo Backes, Dalcimar Casanova, Odemir Martinez Bruno

arxiv:1311.4252 v1 · 2013-11-18 · physics.comp-ph · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RI5HDH3KJQWMUYCWVO6XDUU6QU}

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	2026-05-18T03:06:53.201543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a3a719f6a4c2cca6056abbd71d29e853b9eaa2afdc200c358c5752f292399d5

Aliases

arxiv: 1311.4252 · arxiv_version: 1311.4252v1 · doi: 10.48550/arxiv.1311.4252 · pith_short_12: RI5HDH3KJQWM · pith_short_16: RI5HDH3KJQWMUYCW · pith_short_8: RI5HDH3K

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/RI5HDH3KJQWMUYCWVO6XDUU6QU \
  | 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: 8a3a719f6a4c2cca6056abbd71d29e853b9eaa2afdc200c358c5752f292399d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36c1d7ca225fced47b2fa39dacccf12269d53898aa9611e175a7618c695f3274",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2013-11-18T03:16:55Z",
    "title_canon_sha256": "529ae4c5e23213afbb80fe3695d1531bea60e86dbb032a9be39d678f07f7b79f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4252",
    "kind": "arxiv",
    "version": 1
  }
}