Pith Number

pith:NJBMKH6H

pith:2019:NJBMKH6HCS4XUUSJ7YQQUGDOTT

not attested not anchored not stored refs pending

Subset Feedback Vertex Set in Chordal and Split Graphs

Geevarghese Philip, Prafullkumar Tale, Saket Saurabh, Varun Rajan

arxiv:1901.02209 v1 · 2019-01-08 · 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{NJBMKH6HCS4XUUSJ7YQQUGDOTT}

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	2026-05-17T23:56:43.761870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a42c51fc714b97a5249fe210a186e9ce00526812aa065c87c158b19958f290b

Aliases

arxiv: 1901.02209 · arxiv_version: 1901.02209v1 · doi: 10.48550/arxiv.1901.02209 · pith_short_12: NJBMKH6HCS4X · pith_short_16: NJBMKH6HCS4XUUSJ · pith_short_8: NJBMKH6H

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/NJBMKH6HCS4XUUSJ7YQQUGDOTT \
  | 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: 6a42c51fc714b97a5249fe210a186e9ce00526812aa065c87c158b19958f290b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84b0052e96faa652e9b250086631727e883cd4d8d04e2cc21ff8f0ef68f5212d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-01-08T08:50:02Z",
    "title_canon_sha256": "70bc316e7d59c6e578ce3e70a237eb186597a6f423fb6aefc14aae64794d32ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02209",
    "kind": "arxiv",
    "version": 1
  }
}