Pith Number

pith:DMBVFBK2

pith:2019:DMBVFBK2CBVDDGKJDUNA4UV7AG

not attested not anchored not stored refs pending

l-path vertex cover is easier than l-hitting set for small l

Dekel Tsur

arxiv:1906.10523 v1 · 2019-06-22 · 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{DMBVFBK2CBVDDGKJDUNA4UV7AG}

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	2026-05-17T23:42:16.112617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b0352855a106a3199491d1a0e52bf01a5816ee16c2f2792a5bd733afa5ec0d3

Aliases

arxiv: 1906.10523 · arxiv_version: 1906.10523v1 · doi: 10.48550/arxiv.1906.10523 · pith_short_12: DMBVFBK2CBVD · pith_short_16: DMBVFBK2CBVDDGKJ · pith_short_8: DMBVFBK2

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/DMBVFBK2CBVDDGKJDUNA4UV7AG \
  | 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: 1b0352855a106a3199491d1a0e52bf01a5816ee16c2f2792a5bd733afa5ec0d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "619322ae0304cca8ab2e3314970386559aa7be1452b9d6af8159f2df9d3ebdb7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-06-22T20:10:54Z",
    "title_canon_sha256": "3c6c260381f6e54414377dfb1ea88ca4aeb363016d893135829b3a175430e38d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.10523",
    "kind": "arxiv",
    "version": 1
  }
}