Pith Number

pith:5QAYKZND

pith:2025:5QAYKZND7NH33QJBAEJNVYWNFT

not attested not anchored not stored refs pending

Constant Approximation of Fr\'echet Distance in Strongly Subquadratic Time

Haoqiang Huang, Shuo Zhang, Siu-Wing Cheng

arxiv:2503.12746 v1 · 2025-03-17 · 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{5QAYKZND7NH33QJBAEJNVYWNFT}

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	2026-07-05T10:32:45.401236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec018565a3fb4fbdc1210112dae2cd2cfc66eb54dfbec55f1bb8c5e00e49d919

Aliases

arxiv: 2503.12746 · arxiv_version: 2503.12746v1 · doi: 10.48550/arxiv.2503.12746 · pith_short_12: 5QAYKZND7NH3 · pith_short_16: 5QAYKZND7NH33QJB · pith_short_8: 5QAYKZND

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/5QAYKZND7NH33QJBAEJNVYWNFT \
  | 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: ec018565a3fb4fbdc1210112dae2cd2cfc66eb54dfbec55f1bb8c5e00e49d919

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6627ab9061811765f7c7985e7543d6cebe224ba1c2a6381322cd0814d0c89dc",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2025-03-17T02:27:40Z",
    "title_canon_sha256": "0dfd51d6bbb34cc74a75b6ca4a2e53d15ea7683d37eb07f5f7f84f2d7f65f4c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.12746",
    "kind": "arxiv",
    "version": 1
  }
}