Pith Number

pith:NTE4CWFH

pith:2012:NTE4CWFHJOF76CS6Z3CPHHV7KH

not attested not anchored not stored refs pending

Four Soviets Walk the Dog-Improved Bounds for Computing the Fr\'echet Distance

Kevin Buchin, Maike Buchin, Wolfgang Mulzer, Wouter Meulemans

arxiv:1209.4403 v3 · 2012-09-20 · cs.CG · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTE4CWFHJOF76CS6Z3CPHHV7KH}

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	2026-05-18T00:43:09.992409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc9c158a74b8bff0a5ecec4f39ebf51dc6ec5e675a13c0ca2c66c3043530c4c

Aliases

arxiv: 1209.4403 · arxiv_version: 1209.4403v3 · doi: 10.48550/arxiv.1209.4403 · pith_short_12: NTE4CWFHJOF7 · pith_short_16: NTE4CWFHJOF76CS6 · pith_short_8: NTE4CWFH

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/NTE4CWFHJOF76CS6Z3CPHHV7KH \
  | 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: 6cc9c158a74b8bff0a5ecec4f39ebf51dc6ec5e675a13c0ca2c66c3043530c4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6073632089bfd721c0439ff9170d056ffd9f251f15f35296528896fc4335972",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-09-20T01:06:39Z",
    "title_canon_sha256": "b26eb7fa9e744bf26bb826db3ef4f74803b06e9cc2967cc5b04961fe16f6e47a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4403",
    "kind": "arxiv",
    "version": 3
  }
}