Pith Number

pith:C5JORB5V

pith:2016:C5JORB5VBCDR37FF2MYCYBU4WK

not attested not anchored not stored refs pending

Unique Set Cover on Unit Disks and Unit Squares

Saeed Mehrabi

arxiv:1607.07378 v1 · 2016-07-25 · 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{C5JORB5VBCDR37FF2MYCYBU4WK}

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	2026-05-18T01:10:34.088122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1752e887b508871dfca5d3302c069cb2a53a15b76124e8e4500d5ea836d099db

Aliases

arxiv: 1607.07378 · arxiv_version: 1607.07378v1 · doi: 10.48550/arxiv.1607.07378 · pith_short_12: C5JORB5VBCDR · pith_short_16: C5JORB5VBCDR37FF · pith_short_8: C5JORB5V

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/C5JORB5VBCDR37FF2MYCYBU4WK \
  | 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: 1752e887b508871dfca5d3302c069cb2a53a15b76124e8e4500d5ea836d099db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0a9ceb0cacc74cf6fb43a5fe94c0d1be671e4c24e298969cba32db5967fb3a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-07-25T17:38:39Z",
    "title_canon_sha256": "ef2f91d5713bdb6c9d8432697f5041e700aa760a98a3c5732c58465439d260ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.07378",
    "kind": "arxiv",
    "version": 1
  }
}