Pith Number

pith:RV324H2G

pith:2023:RV324H2GX5DUCJTGTUCNTWP5YP

not attested not anchored not stored refs pending

A Constant Factor Approximation for Directed Feedback Vertex Set in Graphs of Bounded Genus

Hao Sun

arxiv:2311.01026 v4 · 2023-11-02 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RV324H2GX5DUCJTGTUCNTWP5YP}

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	2026-07-05T08:18:01.511840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d77ae1f46bf474126669d04d9d9fdc3e88b641f12339b922e7e6836128d16cc

Aliases

arxiv: 2311.01026 · arxiv_version: 2311.01026v4 · doi: 10.48550/arxiv.2311.01026 · pith_short_12: RV324H2GX5DU · pith_short_16: RV324H2GX5DUCJTG · pith_short_8: RV324H2G

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/RV324H2GX5DUCJTGTUCNTWP5YP \
  | 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: 8d77ae1f46bf474126669d04d9d9fdc3e88b641f12339b922e7e6836128d16cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5110796c69f21be459626dcf1b76e8849515ec7ecbf43625c5be971e984bd0c",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2023-11-02T06:38:26Z",
    "title_canon_sha256": "650058ddc19419f60c95cea9104b4df45bcf3cbca4715bd86cdfa3e89d0b7cb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.01026",
    "kind": "arxiv",
    "version": 4
  }
}