Pith Number

pith:5UVOP43F

pith:2022:5UVOP43F2JQJIJ25ZB57TENZ4K

not attested not anchored not stored refs pending

Breaking the Barrier $2^k$ for Subset Feedback Vertex Set in Chordal Graphs

Mingyu Xiao, Tian Bai

arxiv:2212.04726 v4 · 2022-12-09 · 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{5UVOP43F2JQJIJ25ZB57TENZ4K}

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	2026-07-05T09:56:19.944007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed2ae7f365d26094275dc87bf991b9e2b2019ae82a0de41c41bc975f92e237f3

Aliases

arxiv: 2212.04726 · arxiv_version: 2212.04726v4 · doi: 10.48550/arxiv.2212.04726 · pith_short_12: 5UVOP43F2JQJ · pith_short_16: 5UVOP43F2JQJIJ25 · pith_short_8: 5UVOP43F

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/5UVOP43F2JQJIJ25ZB57TENZ4K \
  | 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: ed2ae7f365d26094275dc87bf991b9e2b2019ae82a0de41c41bc975f92e237f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64bc665a372e31568e4ee05fd7b32251aac8a332a530f46c7d58e6ba197fafe2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2022-12-09T08:48:32Z",
    "title_canon_sha256": "5b87077ea917f37bc318063cf78ed547f61a0dd4b99e576bf9560411fd27728d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.04726",
    "kind": "arxiv",
    "version": 4
  }
}