Pith Number

pith:EIC4IUMQ

pith:2013:EIC4IUMQUZAGPHYFEFMWGWV6Q4

not attested not anchored not stored refs pending

Face-Guarding Polyhedra

Giovanni Viglietta

arxiv:1305.2866 v4 · 2013-05-13 · cs.CG · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EIC4IUMQUZAGPHYFEFMWGWV6Q4}

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	2026-05-18T02:53:53.837903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2205c45190a640679f052159635abe8725c2c1897992c364696f594cfd4536b8

Aliases

arxiv: 1305.2866 · arxiv_version: 1305.2866v4 · doi: 10.48550/arxiv.1305.2866 · pith_short_12: EIC4IUMQUZAG · pith_short_16: EIC4IUMQUZAGPHYF · pith_short_8: EIC4IUMQ

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/EIC4IUMQUZAGPHYFEFMWGWV6Q4 \
  | 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: 2205c45190a640679f052159635abe8725c2c1897992c364696f594cfd4536b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2163d5f8e3dd596e08cd9411bbd904fca7cabe76c058a950e53503d0d1adc255",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-05-13T17:31:48Z",
    "title_canon_sha256": "2700ba28d8c36519bb001fe466f4c91e8addce7036cd8fa4adbdfb4d261372c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2866",
    "kind": "arxiv",
    "version": 4
  }
}