Pith Number

pith:MNJ4ENMI

pith:2018:MNJ4ENMIWAWI56NCHXBQTJRZL4

not attested not anchored not stored refs pending

Universal Slope Sets for Upward Planar Drawings

Emilio Di Giacomo, Fabrizio Montecchiani, Giuseppe Liotta, Michael A. Bekos, Walter Didimo

arxiv:1803.09949 v2 · 2018-03-27 · 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{MNJ4ENMIWAWI56NCHXBQTJRZL4}

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	2026-05-18T00:06:56.144439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6353c23588b02c8ef9a23dc309a6395f21a0b80c966514e099a2776b0aca7a4e

Aliases

arxiv: 1803.09949 · arxiv_version: 1803.09949v2 · doi: 10.48550/arxiv.1803.09949 · pith_short_12: MNJ4ENMIWAWI · pith_short_16: MNJ4ENMIWAWI56NC · pith_short_8: MNJ4ENMI

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/MNJ4ENMIWAWI56NCHXBQTJRZL4 \
  | 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: 6353c23588b02c8ef9a23dc309a6395f21a0b80c966514e099a2776b0aca7a4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9751d9dd397efc55d44cbc3950796180f53c63ed81f4a4f16cf794c4352544b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-03-27T08:12:19Z",
    "title_canon_sha256": "838e0a6317924557b23ef8d6f9893d53ededf4f29c024f470defcc1a34923d73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09949",
    "kind": "arxiv",
    "version": 2
  }
}