Pith Number

pith:H5M4PZZZ

pith:2019:H5M4PZZZ462WIL2UBNF77F3M4L

not attested not anchored not stored refs pending

Generalizing the Covering Path Problem on a Grid

Karen Smilowitz, Liwei Zeng, Sunil Chopra

arxiv:1904.12258 v1 · 2019-04-28 · cs.DS · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H5M4PZZZ462WIL2UBNF77F3M4L}

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	2026-05-17T23:47:36.922308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f59c7e739e7b5642f540b4bff976ce2c7b02bc2354d6540c1cc690bfbe05282

Aliases

arxiv: 1904.12258 · arxiv_version: 1904.12258v1 · doi: 10.48550/arxiv.1904.12258 · pith_short_12: H5M4PZZZ462W · pith_short_16: H5M4PZZZ462WIL2U · pith_short_8: H5M4PZZZ

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/H5M4PZZZ462WIL2UBNF77F3M4L \
  | 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: 3f59c7e739e7b5642f540b4bff976ce2c7b02bc2354d6540c1cc690bfbe05282

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25511adf32e5098798e6f85d89fcd492c35ea38cf11966430d6200d8689d16c8",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-04-28T05:03:56Z",
    "title_canon_sha256": "a86d4100075e4ba1e67ba8d8481e86a76caf5052b3f509a6bfaaeb43a58f0a6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12258",
    "kind": "arxiv",
    "version": 1
  }
}