Pith Number

pith:EYEO4BAR

pith:2011:EYEO4BAR23SADLTP2GEHKQRGBR

not attested not anchored not stored refs pending

Connecting a Set of Circles with Minimum Sum of Radii

Dimitri Marinakis, Erin Wolf Chambers, Hella-Franziska Hoffmann, Joseph S.B. Mitchell, S\'andor P. Fekete, Sue Whitesides, Ulrike Stege, Venkatesh Srinivasan

arxiv:1105.0791 v2 · 2011-05-04 · cs.CG · 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{EYEO4BAR23SADLTP2GEHKQRGBR}

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	2026-05-18T00:53:41.041723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2608ee0411d6e401ae6fd1887542260c4660ff5b37eb378d859dde1979360bc5

Aliases

arxiv: 1105.0791 · arxiv_version: 1105.0791v2 · doi: 10.48550/arxiv.1105.0791 · pith_short_12: EYEO4BAR23SA · pith_short_16: EYEO4BAR23SADLTP · pith_short_8: EYEO4BAR

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/EYEO4BAR23SADLTP2GEHKQRGBR \
  | 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: 2608ee0411d6e401ae6fd1887542260c4660ff5b37eb378d859dde1979360bc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f325e29dfc4162db7207987ddc2b598d1a6bffdd7891fe925e5f45b440cf479",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-05-04T11:13:46Z",
    "title_canon_sha256": "9bd0e607ff1bcd16132d4e09c928c349ea0c9bd68a1f9b11ebc341a99cbd7289"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.0791",
    "kind": "arxiv",
    "version": 2
  }
}