Pith Number

pith:Z37ZCSCP

pith:2012:Z37ZCSCPEXOBSVK4IU4INYGRIW

not attested not anchored not stored refs pending

Parameterized Study of the Test Cover Problem

A. Yeo, G. Gutin, M. Jones, R. Crowston, S. Saurabh

arxiv:1212.0117 v1 · 2012-12-01 · 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{Z37ZCSCPEXOBSVK4IU4INYGRIW}

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	2026-05-18T03:39:27.215515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceff91484f25dc19555c453886e0d145bcbf67989ab02725e15be1282dd22b4d

Aliases

arxiv: 1212.0117 · arxiv_version: 1212.0117v1 · doi: 10.48550/arxiv.1212.0117 · pith_short_12: Z37ZCSCPEXOB · pith_short_16: Z37ZCSCPEXOBSVK4 · pith_short_8: Z37ZCSCP

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/Z37ZCSCPEXOBSVK4IU4INYGRIW \
  | 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: ceff91484f25dc19555c453886e0d145bcbf67989ab02725e15be1282dd22b4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01a992fb36e9d722e676da0ba41c464496b82b6373babf265975d4800490c48",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-12-01T14:38:25Z",
    "title_canon_sha256": "4557452ee46870a1343b75d1dcd4269e116ca9bfa8aeeec2d5f0199661ce6236"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0117",
    "kind": "arxiv",
    "version": 1
  }
}