Pith Number

pith:IW4NEGDG

pith:2019:IW4NEGDGTGQCVHJCA36TPMR5SK

not attested not anchored not stored refs pending

Constrained Orthogonal Segment Stabbing

Saeed Mehrabi, Sayan Bandyapadhyay

arxiv:1904.13369 v2 · 2019-04-30 · cs.CG · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IW4NEGDGTGQCVHJCA36TPMR5SK}

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	2026-05-17T23:42:41.724223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45b8d2186699a02a9d2206fd37b23d92853072a30b1240561ab0d1771aedce72

Aliases

arxiv: 1904.13369 · arxiv_version: 1904.13369v2 · doi: 10.48550/arxiv.1904.13369 · pith_short_12: IW4NEGDGTGQC · pith_short_16: IW4NEGDGTGQCVHJC · pith_short_8: IW4NEGDG

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/IW4NEGDGTGQCVHJCA36TPMR5SK \
  | 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: 45b8d2186699a02a9d2206fd37b23d92853072a30b1240561ab0d1771aedce72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfe7c8c13c562df578eb7fdb979fc33a9b5d6b06bde4b01162c86910b07fd874",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2019-04-30T17:04:08Z",
    "title_canon_sha256": "7a0a2e4ed35aa8c0628d8ab43126355bb935f1a8763bc6db1b7829324394892d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13369",
    "kind": "arxiv",
    "version": 2
  }
}