Pith Number

pith:CVA3D5WM

pith:2015:CVA3D5WM4NVNTAO6CDLZAGOX5P

not attested not anchored not stored refs pending

The Hardness of Subgraph Isomorphism

Arkadiusz Soca{\l}a, Jakub Pachocki, Marek Cygan

arxiv:1504.02876 v1 · 2015-04-11 · 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{CVA3D5WM4NVNTAO6CDLZAGOX5P}

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	2026-05-18T02:18:59.774659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1541b1f6cce36ad981de10d79019d7ebc8d480da542e16fb21587a6418fd6bac

Aliases

arxiv: 1504.02876 · arxiv_version: 1504.02876v1 · doi: 10.48550/arxiv.1504.02876 · pith_short_12: CVA3D5WM4NVN · pith_short_16: CVA3D5WM4NVNTAO6 · pith_short_8: CVA3D5WM

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/CVA3D5WM4NVNTAO6CDLZAGOX5P \
  | 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: 1541b1f6cce36ad981de10d79019d7ebc8d480da542e16fb21587a6418fd6bac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c74a2bb8d1837ccecf2c170346145760f5acdad73636002b1c360efc20e1c9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-04-11T13:54:51Z",
    "title_canon_sha256": "7e7bb8a315e89159d06c3e7428894ec93ff0e2eb0965dcacfafd51e6d9648f54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02876",
    "kind": "arxiv",
    "version": 1
  }
}