Pith Number

pith:SOFQRRWJ

pith:2018:SOFQRRWJFVDQA23PZSBMWKQK3S

not attested not anchored not stored refs pending

Perception of Symmetries in Drawings of Graphs

Felice De Luca, Helen Purchase, Stephen Kobourov

arxiv:1808.01031 v3 · 2018-08-02 · 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{SOFQRRWJFVDQA23PZSBMWKQK3S}

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	2026-05-18T00:06:22.480386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

938b08c6c92d47006b6fcc82cb2a0adcb9aabd7d37c7d2353a69e98d2968ab94

Aliases

arxiv: 1808.01031 · arxiv_version: 1808.01031v3 · doi: 10.48550/arxiv.1808.01031 · pith_short_12: SOFQRRWJFVDQ · pith_short_16: SOFQRRWJFVDQA23P · pith_short_8: SOFQRRWJ

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/SOFQRRWJFVDQA23PZSBMWKQK3S \
  | 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: 938b08c6c92d47006b6fcc82cb2a0adcb9aabd7d37c7d2353a69e98d2968ab94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "557dcafe46a23cbb175db7a5626631519bf4abcad7e9117a2be012cedb8f1960",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-08-02T21:47:50Z",
    "title_canon_sha256": "450d0d40fe0513d6b3476053831d8d1efa835bb8783824c164b23d84b343a99b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01031",
    "kind": "arxiv",
    "version": 3
  }
}