Pith Number

pith:HG5AA5TH

pith:2017:HG5AA5THPWFYQGEOS4HDD6TFV2

not attested not anchored not stored refs pending

Independent Feedback Vertex Set for $P_5$-free Graphs

Carl Feghali, Daniel Paulusma, Konrad K. Dabrowski, Marthe Bonamy, Matthew Johnson

arxiv:1707.09402 v1 · 2017-07-28 · cs.DS · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HG5AA5THPWFYQGEOS4HDD6TFV2}

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	2026-05-18T00:39:11.427058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39ba0076677d8b88188e970e31fa65ae8f04abc6bfb3b2501a5dbe268e98fa31

Aliases

arxiv: 1707.09402 · arxiv_version: 1707.09402v1 · doi: 10.48550/arxiv.1707.09402 · pith_short_12: HG5AA5THPWFY · pith_short_16: HG5AA5THPWFYQGEO · pith_short_8: HG5AA5TH

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/HG5AA5THPWFYQGEOS4HDD6TFV2 \
  | 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: 39ba0076677d8b88188e970e31fa65ae8f04abc6bfb3b2501a5dbe268e98fa31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94f176e1b04b97d56ef38d62a857da4a417a4d2ec4b2d91be21d136080c2f95b",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-28T20:17:45Z",
    "title_canon_sha256": "1c8dad4558b60566f9ca374b63d0f3b898a433eabc6e4d06c93ecba14314a427"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09402",
    "kind": "arxiv",
    "version": 1
  }
}