Pith Number

pith:XHBXH2BY

pith:2019:XHBXH2BYFLEBHZLAUAMAAYRGB6

not attested not anchored not stored refs pending

Faster parameterized algorithm for pumpkin vertex deletion set

Dekel Tsur

arxiv:1901.02491 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{XHBXH2BYFLEBHZLAUAMAAYRGB6}

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	2026-05-17T23:56:40.372208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9c373e8382ac813e560a0180062260fad5506f525150eb3fba490c016a18bca

Aliases

arxiv: 1901.02491 · arxiv_version: 1901.02491v1 · doi: 10.48550/arxiv.1901.02491 · pith_short_12: XHBXH2BYFLEB · pith_short_16: XHBXH2BYFLEBHZLA · pith_short_8: XHBXH2BY

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/XHBXH2BYFLEBHZLAUAMAAYRGB6 \
  | 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: b9c373e8382ac813e560a0180062260fad5506f525150eb3fba490c016a18bca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec587f9d3881558d7fbed375b8f88d97454624701a45dcec3bbbce0593329074",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-01-08T20:00:07Z",
    "title_canon_sha256": "051578b5ab514095e79281966d203be7c8f850fbd2aff0ad41f99403b0f6769d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02491",
    "kind": "arxiv",
    "version": 1
  }
}