Pith Number

pith:26A26YV3

pith:2013:26A26YV34HTGXD4ZBWYAVNIH3F

not attested not anchored not stored refs pending

Abusing the Tutte Matrix: An Algebraic Instance Compression for the K-set-cycle Problem

Magnus Wahlstr\"om

arxiv:1301.1517 v1 · 2013-01-08 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{26A26YV34HTGXD4ZBWYAVNIH3F}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:36:57.261749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d781af62bbe1e66b8f990db00ab507d97a1e17816e725e092a59e3c48f5f2041

Aliases

arxiv: 1301.1517 · arxiv_version: 1301.1517v1 · doi: 10.48550/arxiv.1301.1517 · pith_short_12: 26A26YV34HTG · pith_short_16: 26A26YV34HTGXD4Z · pith_short_8: 26A26YV3

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/26A26YV34HTGXD4ZBWYAVNIH3F \
  | 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: d781af62bbe1e66b8f990db00ab507d97a1e17816e725e092a59e3c48f5f2041

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7760467ad34b3785b796ec2a603b6ede4a5e8272db913b3c423e6f2bc0fa208f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-01-08T12:48:52Z",
    "title_canon_sha256": "1e4a03e60b248b96f7761d2ee890036166534d852898c0cc2d0abaeaa1c3dc17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1517",
    "kind": "arxiv",
    "version": 1
  }
}