Pith Number

pith:DSYQFOCX

pith:2018:DSYQFOCXTGUT5B5T2GW7V6UTLA

not attested not anchored not stored refs pending

Improved Inference on the Rank of a Matrix

Qihui Chen, Zheng Fang

arxiv:1812.02337 v2 · 2018-12-06 · econ.EM · math.ST · stat.ME · 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{DSYQFOCXTGUT5B5T2GW7V6UTLA}

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	2026-05-17T23:50:33.524539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cb102b85799a93e87b3d1adfafa93583d0d10b015b47a9dc74d8b80887f4868

Aliases

arxiv: 1812.02337 · arxiv_version: 1812.02337v2 · doi: 10.48550/arxiv.1812.02337 · pith_short_12: DSYQFOCXTGUT · pith_short_16: DSYQFOCXTGUT5B5T · pith_short_8: DSYQFOCX

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/DSYQFOCXTGUT5B5T2GW7V6UTLA \
  | 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: 1cb102b85799a93e87b3d1adfafa93583d0d10b015b47a9dc74d8b80887f4868

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22f1dd83a672eb79f1424ebe20f5d3f2a0f96786c5436c0fdf6f0133b8b22b2a",
    "cross_cats_sorted": [
      "math.ST",
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2018-12-06T03:46:11Z",
    "title_canon_sha256": "c6cba2f8732dd2602668945497459997a342d7a55282be616840b964bcca22ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02337",
    "kind": "arxiv",
    "version": 2
  }
}