Pith Number

pith:AS7QIPZQ

pith:2018:AS7QIPZQFJVROS2JWEVLE72HAC

not attested not anchored not stored refs pending

Statistical and Computational Limits for Sparse Matrix Detection

T. Tony Cai, Yihong Wu

arxiv:1801.00518 v1 · 2018-01-01 · math.ST · cs.IT · math.IT · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AS7QIPZQFJVROS2JWEVLE72HAC}

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	2026-05-18T00:26:53.163723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04bf043f302a6b174b49b12ab27f4700ba7651078a9654ac43fa504249af9ec5

Aliases

arxiv: 1801.00518 · arxiv_version: 1801.00518v1 · doi: 10.48550/arxiv.1801.00518 · pith_short_12: AS7QIPZQFJVR · pith_short_16: AS7QIPZQFJVROS2J · pith_short_8: AS7QIPZQ

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/AS7QIPZQFJVROS2JWEVLE72HAC \
  | 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: 04bf043f302a6b174b49b12ab27f4700ba7651078a9654ac43fa504249af9ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88da263a1cafadb10bd8476e600e1e4f0b2442234f1f1c6e4199627ac0866d5e",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-01-01T21:53:55Z",
    "title_canon_sha256": "6595beb2050a0ed1fceef1907e985e330f4722ec0704a2cc6a5ce07296cf0f9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.00518",
    "kind": "arxiv",
    "version": 1
  }
}