Pith Number

pith:2E2SRFCZ

pith:2025:2E2SRFCZAJ2NT5PIZZHLB6YOGI

not attested not anchored not stored refs pending

On computing the (exact) Fr\'echet distance with a frog

Eva Rotenberg, Ivor van der Hoog, Jacobus Conradi

arxiv:2512.07728 v2 · 2025-12-08 · 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{2E2SRFCZAJ2NT5PIZZHLB6YOGI}

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	2026-05-20T00:00:29.781917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1352894590274d9f5e8ce4eb0fb0e32177c02aab293c948c2f1fb6c67ddf5c4

Aliases

arxiv: 2512.07728 · arxiv_version: 2512.07728v2 · doi: 10.48550/arxiv.2512.07728 · pith_short_12: 2E2SRFCZAJ2N · pith_short_16: 2E2SRFCZAJ2NT5PI · pith_short_8: 2E2SRFCZ

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/2E2SRFCZAJ2NT5PIZZHLB6YOGI \
  | 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: d1352894590274d9f5e8ce4eb0fb0e32177c02aab293c948c2f1fb6c67ddf5c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "440f6fefc5927d3e69063b1e8db7eb7b0671709319516b659fd76ba3f117a412",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2025-12-08T17:18:26Z",
    "title_canon_sha256": "cc2ed7bd9f4c4f17f77b9af3bbe892dc107f95aa6f14d707d09ff6f4f7a18443"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.07728",
    "kind": "arxiv",
    "version": 2
  }
}