Pith Number

pith:NFRIPK7F

pith:2015:NFRIPK7F532J4BEEDSJ74YI7PC

not attested not anchored not stored refs pending

Optimal Morphs of Convex Drawings

Anna Lubiw, Fabrizio Frati, Giordano Da Lozzo, Maurizio Patrignani, Patrizio Angelini, Vincenzo Roselli

arxiv:1503.09021 v1 · 2015-03-31 · cs.CG · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFRIPK7F532J4BEEDSJ74YI7PC}

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	2026-05-18T02:19:51.602646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

696287abe5eef49e04841c93fe611f78a0faac295dcefe804253d41d78ecc269

Aliases

arxiv: 1503.09021 · arxiv_version: 1503.09021v1 · doi: 10.48550/arxiv.1503.09021 · pith_short_12: NFRIPK7F532J · pith_short_16: NFRIPK7F532J4BEE · pith_short_8: NFRIPK7F

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/NFRIPK7F532J4BEEDSJ74YI7PC \
  | 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: 696287abe5eef49e04841c93fe611f78a0faac295dcefe804253d41d78ecc269

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36128fc6b3f0366edb89d876a9601fa304c9a0edc0728b6a341bad4487f81c60",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-03-31T12:26:50Z",
    "title_canon_sha256": "8655ea63e226b40d69f4e55c78b1aa97ab6a39604062204b266e66af5d5d0dfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.09021",
    "kind": "arxiv",
    "version": 1
  }
}