Pith Number

pith:DEI22BD6

pith:2017:DEI22BD6FNPRP55YCSRY2HGQVP

not attested not anchored not stored refs pending

Vertex Deletion Problems on Chordal Graphs

Jie You, Yixin Cao, Yota Otachi, Yuping Ke

arxiv:1707.08690 v2 · 2017-07-27 · 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{DEI22BD6FNPRP55YCSRY2HGQVP}

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	2026-05-18T00:39:06.317306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1911ad047e2b5f17f7b814a38d1cd0abf00ca6cd49a31422e951d33aa1ea2d90

Aliases

arxiv: 1707.08690 · arxiv_version: 1707.08690v2 · doi: 10.48550/arxiv.1707.08690 · pith_short_12: DEI22BD6FNPR · pith_short_16: DEI22BD6FNPRP55Y · pith_short_8: DEI22BD6

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/DEI22BD6FNPRP55YCSRY2HGQVP \
  | 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: 1911ad047e2b5f17f7b814a38d1cd0abf00ca6cd49a31422e951d33aa1ea2d90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2853559d7b6e8644350b7b2484cf0bc092d1ff57342131beb7ac1535460cba52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-27T02:57:15Z",
    "title_canon_sha256": "116444a770727ddebe8dda2646dd3b2c14f1103f56db079df53d8c5a404f47a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08690",
    "kind": "arxiv",
    "version": 2
  }
}