Pith Number

pith:VJ66S2WI

pith:2018:VJ66S2WIUZSG4VV6EDHX3MPKUA

not attested not anchored not stored refs pending

Circles and crossing planar compact convex sets

G\'abor Cz\'edli

arxiv:1802.06457 v1 · 2018-02-18 · math.MG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJ66S2WIUZSG4VV6EDHX3MPKUA}

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	2026-05-18T00:23:03.232287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa7de96ac8a6646e56be20cf7db1eaa025faae562ebb261c734ba0e6dca4c046

Aliases

arxiv: 1802.06457 · arxiv_version: 1802.06457v1 · doi: 10.48550/arxiv.1802.06457 · pith_short_12: VJ66S2WIUZSG · pith_short_16: VJ66S2WIUZSG4VV6 · pith_short_8: VJ66S2WI

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/VJ66S2WIUZSG4VV6EDHX3MPKUA \
  | 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: aa7de96ac8a6646e56be20cf7db1eaa025faae562ebb261c734ba0e6dca4c046

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03f40a9db3600b164358bcbcb275d4059b601cd165fb09ce3353d3995a15e9e8",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2018-02-18T22:26:24Z",
    "title_canon_sha256": "bda4307ea01db13be28c1ed33dd1ccf2f2049bb02d10d7d4518d9f4b1389f3b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06457",
    "kind": "arxiv",
    "version": 1
  }
}