Pith Number

pith:4JPZC5ZX

pith:2013:4JPZC5ZXLANSUOZJEBOGGQPHSB

not attested not anchored not stored refs pending

Optimal detection of intersections between convex polyhedra

Luis Barba, Stefan Langerman

arxiv:1312.1001 v4 · 2013-12-04 · 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{4JPZC5ZXLANSUOZJEBOGGQPHSB}

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	2026-05-18T00:23:09.895078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e25f917737581b2a3b29205c6341e7907501c0ccf701df4e12996fb1ee52e9f3

Aliases

arxiv: 1312.1001 · arxiv_version: 1312.1001v4 · doi: 10.48550/arxiv.1312.1001 · pith_short_12: 4JPZC5ZXLANS · pith_short_16: 4JPZC5ZXLANSUOZJ · pith_short_8: 4JPZC5ZX

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/4JPZC5ZXLANSUOZJEBOGGQPHSB \
  | 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: e25f917737581b2a3b29205c6341e7907501c0ccf701df4e12996fb1ee52e9f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ea8f96c01339400c874945ee6c19797704a34dc7f9e448bbac390553adc60a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-12-04T01:42:40Z",
    "title_canon_sha256": "bbb1a871ef69da62e8f01026a3e3bab09565ace1ef80eea1cbeccc680cb3f421"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1001",
    "kind": "arxiv",
    "version": 4
  }
}