Pith Number

pith:VADFTFWG

pith:2020:VADFTFWGEHMKMHVEE2IDYA7RUY

not attested not anchored not stored refs pending

Close relatives of Feedback Vertex Set without single-exponential algorithms parameterized by treewidth

Benjamin Bergougnoux, \'Edouard Bonnet, Nick Brettell, O-joung Kwon

arxiv:2007.14179 v1 · 2020-07-28 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VADFTFWGEHMKMHVEE2IDYA7RUY}

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	2026-07-05T01:22:56.138979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8065996c621d8a61ea426903c03f1a63f50c4d66bc35136225e859793e368f4

Aliases

arxiv: 2007.14179 · arxiv_version: 2007.14179v1 · doi: 10.48550/arxiv.2007.14179 · pith_short_12: VADFTFWGEHMK · pith_short_16: VADFTFWGEHMKMHVE · pith_short_8: VADFTFWG

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/VADFTFWGEHMKMHVEE2IDYA7RUY \
  | 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: a8065996c621d8a61ea426903c03f1a63f50c4d66bc35136225e859793e368f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "768b20a249eeb6ea72f3fac888f0e7106512b24df19241f535da02bd79a04931",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-07-28T13:06:53Z",
    "title_canon_sha256": "84cdd8a4d305bafdf4a881155194d09b6aea0f651e8908885bba85d92ba48773"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.14179",
    "kind": "arxiv",
    "version": 1
  }
}