Pith Number

pith:FVR7IAFE

pith:2025:FVR7IAFENRTICQW3CQKSNBWTEX

not attested not anchored not stored refs pending

Compact Representation of Semilinear and Terrain-like Graphs

Jean Cardinal, Yelena Yuditsky

arxiv:2507.00252 v1 · 2025-06-30 · math.CO · cs.CG · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVR7IAFENRTICQW3CQKSNBWTEX}

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	2026-07-05T11:30:05.105904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d63f400a46c668142db14152686d325f7d9562553870cfea873242d3501889c

Aliases

arxiv: 2507.00252 · arxiv_version: 2507.00252v1 · doi: 10.48550/arxiv.2507.00252 · pith_short_12: FVR7IAFENRTI · pith_short_16: FVR7IAFENRTICQW3 · pith_short_8: FVR7IAFE

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/FVR7IAFENRTICQW3CQKSNBWTEX \
  | 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: 2d63f400a46c668142db14152686d325f7d9562553870cfea873242d3501889c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70f175de27006a7989ef0fc4db4fc87e262b0085b494f451aa845edfd84a0a18",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-06-30T20:39:44Z",
    "title_canon_sha256": "f3827e0ace93eccf5ad5fecbb83ae14eeaa8f7ab25c3f0508f62d0a28b7ab3e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.00252",
    "kind": "arxiv",
    "version": 1
  }
}