Pith Number

pith:FBCASRLL

pith:2021:FBCASRLL2JS67LPDOGOFY4OWNR

not attested not anchored not stored refs pending

Degrees and Gaps: Tight Complexity Results of General Factor Problems Parameterized by Treewidth and Cutwidth

D\'aniel Marx, Govind S. Sankar, Philipp Schepper

arxiv:2105.08980 v1 · 2021-05-19 · cs.CC · 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{FBCASRLL2JS67LPDOGOFY4OWNR}

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	2026-07-05T03:23:41.657987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

284409456bd265efade3719c5c71d66c728ad897d4f3a9b7c7bc7913e18a61d8

Aliases

arxiv: 2105.08980 · arxiv_version: 2105.08980v1 · doi: 10.48550/arxiv.2105.08980 · pith_short_12: FBCASRLL2JS6 · pith_short_16: FBCASRLL2JS67LPD · pith_short_8: FBCASRLL

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/FBCASRLL2JS67LPDOGOFY4OWNR \
  | 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: 284409456bd265efade3719c5c71d66c728ad897d4f3a9b7c7bc7913e18a61d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53ef6acf17b7d2ba9cf6c235068f5ad51ae2085b87a4d92fe042e68b1ff6b35a",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2021-05-19T08:26:18Z",
    "title_canon_sha256": "3f0dc93b4c018ba70c34ddd7d3076ad6d3e1b4c6dca890b85135bbfabb0746c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.08980",
    "kind": "arxiv",
    "version": 1
  }
}