Pith Number

pith:U5ITAG6Y

pith:2016:U5ITAG6YBL7ABNKQYJJDJETDXT

not attested not anchored not stored refs pending

Graph Isomorphism for unit square graphs

Daniel Neuen

arxiv:1602.08371 v2 · 2016-02-26 · cs.DS · 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{U5ITAG6YBL7ABNKQYJJDJETDXT}

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	2026-05-18T01:12:01.478343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a751301bd80afe00b550c252349263bcedcf423918db93c319242ae2a2707d67

Aliases

arxiv: 1602.08371 · arxiv_version: 1602.08371v2 · doi: 10.48550/arxiv.1602.08371 · pith_short_12: U5ITAG6YBL7A · pith_short_16: U5ITAG6YBL7ABNKQ · pith_short_8: U5ITAG6Y

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/U5ITAG6YBL7ABNKQYJJDJETDXT \
  | 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: a751301bd80afe00b550c252349263bcedcf423918db93c319242ae2a2707d67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "406d6be5a8fd2c9fbf8b0adf911477d622bc52898ab2c09ead68670d3e26422b",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-02-26T15:36:43Z",
    "title_canon_sha256": "64cd461e635bcf9c21b36dfa47f269d3c90fc84e389b4fd1bd20a9e68268d1e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.08371",
    "kind": "arxiv",
    "version": 2
  }
}