Pith Number

pith:PVNXQN7D

pith:2016:PVNXQN7D6IGBEUPURLTNTBCRQF

not attested not anchored not stored refs pending

Graph Isomorphism Restricted by Lists

Du\v{s}an Knop, Pavel Klavik, Peter Zeman

arxiv:1607.03918 v2 · 2016-07-13 · cs.DM · 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{PVNXQN7D6IGBEUPURLTNTBCRQF}

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	2026-05-18T01:00:34.244473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d5b7837e3f20c1251f48ae6d98451814ddfa9b2138f756b692f5a0e75a79d6a

Aliases

arxiv: 1607.03918 · arxiv_version: 1607.03918v2 · doi: 10.48550/arxiv.1607.03918 · pith_short_12: PVNXQN7D6IGB · pith_short_16: PVNXQN7D6IGBEUPU · pith_short_8: PVNXQN7D

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/PVNXQN7D6IGBEUPURLTNTBCRQF \
  | 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: 7d5b7837e3f20c1251f48ae6d98451814ddfa9b2138f756b692f5a0e75a79d6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72b1c0c41409d2f313c83eeade95e86020e7a11f42ca6fe29b70f89cdd2cf8e5",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2016-07-13T20:20:31Z",
    "title_canon_sha256": "f66b268a24aef4b72b307f75f9c6a6acde487aa5306b7e12d97edc5843ce6f90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.03918",
    "kind": "arxiv",
    "version": 2
  }
}