Pith Number

pith:6PJFNQCU

pith:2018:6PJFNQCUGXWHJFJMJGQJQNQH7R

not attested not anchored not stored refs pending

Convexity-Increasing Morphs of Planar Graphs

Anna Lubiw, Boris Klemz, Darren Strash, Frank Staals, Lena Schlipf, Linda Kleist

arxiv:1802.06579 v4 · 2018-02-19 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6PJFNQCUGXWHJFJMJGQJQNQH7R}

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	2026-05-17T23:55:29.570025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3d256c05435ec74952c49a0983607fc42581d2bcac83d19a3cffcd98bb6bfa4

Aliases

arxiv: 1802.06579 · arxiv_version: 1802.06579v4 · doi: 10.48550/arxiv.1802.06579 · pith_short_12: 6PJFNQCUGXWH · pith_short_16: 6PJFNQCUGXWHJFJM · pith_short_8: 6PJFNQCU

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/6PJFNQCUGXWHJFJMJGQJQNQH7R \
  | 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: f3d256c05435ec74952c49a0983607fc42581d2bcac83d19a3cffcd98bb6bfa4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27356d6f3770e76ed8980ac10e28c05c45f7b2e7ac47ad4f3f2667ceadf0053e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-02-19T10:43:16Z",
    "title_canon_sha256": "765be22fb3a12d845d95c9e06211d5a933c78afeb072552bad17cacd73811209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06579",
    "kind": "arxiv",
    "version": 4
  }
}