Pith Number

pith:SZI3ZJEV

pith:2008:SZI3ZJEVH52Z67PLEMMZCCYC6W

not attested not anchored not stored refs pending

On collinear sets in straight line drawings

Alexander Ravsky, Oleg Verbitsky

arxiv:0806.0253 v5 · 2008-06-02 · cs.CG · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SZI3ZJEVH52Z67PLEMMZCCYC6W}

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	2026-05-18T04:08:33.759760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9651bca4953f759f7deb2319910b02f59b94c06c945618631ede597cb32b88ea

Aliases

arxiv: 0806.0253 · arxiv_version: 0806.0253v5 · doi: 10.48550/arxiv.0806.0253 · pith_short_12: SZI3ZJEVH52Z · pith_short_16: SZI3ZJEVH52Z67PL · pith_short_8: SZI3ZJEV

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/SZI3ZJEVH52Z67PLEMMZCCYC6W \
  | 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: 9651bca4953f759f7deb2319910b02f59b94c06c945618631ede597cb32b88ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70a5c82688d59b36e1f34d220558aa754e38c10d4e7ce17df20e27183e3e44a6",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2008-06-02T18:01:35Z",
    "title_canon_sha256": "a65aff66ff7c0d471e19eaafcd4fe2b95406e2016461e9039b71a5559e0d25c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.0253",
    "kind": "arxiv",
    "version": 5
  }
}