Pith Number

pith:PDJLRCST

pith:2003:PDJLRCSTPJREXGMVRXPIP3KOUF

not attested not anchored not stored refs pending

A family of metrics on contact structures based on edge ideals

Francesc Rossell\'o, Merc\'e Llabr\'es

arxiv:cs/0306097 v1 · 2003-06-16 · cs.DM · cs.CE · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PDJLRCSTPJREXGMVRXPIP3KOUF}

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	2026-07-04T14:24:34.402550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78d2b88a537a624b99958dde87ed4ea16bd1901c61711b6357a9f1d84d9b7c2f

Aliases

arxiv: cs/0306097 · arxiv_version: cs/0306097v1 · doi: 10.48550/arxiv.cs/0306097 · pith_short_12: PDJLRCSTPJRE · pith_short_16: PDJLRCSTPJREXGMV · pith_short_8: PDJLRCST

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/PDJLRCSTPJREXGMVRXPIP3KOUF \
  | 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: 78d2b88a537a624b99958dde87ed4ea16bd1901c61711b6357a9f1d84d9b7c2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a378e44f877769f19cd23ecd6a38df38faa90f91bb36f01fe5204dd72fb7e582",
    "cross_cats_sorted": [
      "cs.CE",
      "q-bio"
    ],
    "license": "",
    "primary_cat": "cs.DM",
    "submitted_at": "2003-06-16T11:54:05Z",
    "title_canon_sha256": "200e5b3278b0f0801fb5c867dd9129d0b722286b202b27b9cc4b308bf089ce16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0306097",
    "kind": "arxiv",
    "version": 1
  }
}